├── .gitignore ├── Go.md ├── Html.txt ├── Javascript.md ├── LICENSE ├── PostgreSQL.md ├── README.md ├── Redis.md ├── archlinux-installation.md ├── bash.md ├── django_query_debug.md ├── docker.md ├── git.md ├── mongo.md ├── mysql.md ├── nmap.md ├── regex.md └── sqlite.md /.gitignore: -------------------------------------------------------------------------------- 1 | *~ 2 | *.DS_Store 3 | -------------------------------------------------------------------------------- /Go.md: -------------------------------------------------------------------------------- 1 | ###Basic Types 2 | * bool 3 | * string 4 | * int, int8, int16, int32, int64 5 | * uint, uint8, unit16, unit32, unit64, unitptr 6 | * byte(unit8) 7 | * rune(int32), like a char 8 | * float32, float64 9 | * complex64, complex128 10 | 11 | ###Other Types 12 | * Array 13 | * Slice 14 | * Struct 15 | * Pointer 16 | * Fucntion 17 | * Interface 18 | * Map 19 | * Channel 20 | 21 | #### Variable Declaration 22 | ``` 23 | var 24 | var hiren string 25 | var a, b , c int 26 | ``` 27 | ######Or 28 | ``` 29 | var hiren = "Yo :D!" 30 | ``` 31 | ######Or 32 | ``` 33 | hiren := "Shorthand Yo! :/ " 34 | ``` 35 | #####Multi Initialization 36 | ``` 37 | var = 38 | var hiren, nish, nan int= 1 , 2 , 3 39 | ``` 40 | ######shortform :D 41 | ``` 42 | hiren, nish, nan := 1, "srting", false 43 | ``` 44 | 45 | #####Pointer 46 | ``` 47 | var * 48 | var xoxo := "o_O" 49 | var pointermama string = &xoxo 50 | ``` 51 | ######Pointer assignment 52 | ``` 53 | *pointermama = "another value" 54 | ``` 55 | #####Struct 56 | ``` 57 | type struct { 58 | 59 | } 60 | 61 | //example 62 | type Hiren struct { 63 | nan string 64 | nish string 65 | } 66 | 67 | //assinment 68 | var prism = Hiren{ "Example", "example" } 69 | //or 70 | var prism = Hiren{ nish : "Example", nan: "example } 71 | //or 72 | var prism = Hiren{} 73 | prism.nan = "bla blah" 74 | prism.nish = "yo yo " 75 | 76 | //access 77 | fmt.Println(prism.nan) 78 | ``` 79 | #####Function 80 | ``` 81 | func Example( ){ 82 | return bla bla 83 | } 84 | 85 | func Hiren(hiren string) string { 86 | return 'hello' 87 | } 88 | ``` 89 | ######Multiple returns 90 | ``` 91 | func example( ) ( multiple return type separated by comma){ 92 | return 93 | } 94 | 95 | func example(hiren string) (string, string) { 96 | return 'hi', 'hello' 97 | } 98 | ``` 99 | ######Named returns 100 | ``` 101 | func example( ) ( multiple return type with name separated by comma){ 102 | return 103 | } 104 | 105 | func example(hiren string) (hi string, hello string) { 106 | hi = "hi" 107 | hello = "holla" 108 | return 109 | } 110 | ``` 111 | ######Variadic function 112 | passing unlimited value in the fucntion 113 | ``` 114 | func example( yo name ...string) string { 115 | return name[0] 116 | } 117 | ``` 118 | ######Closure 119 | ``` 120 | function Xoxo(yo string) function() int{ 121 | return func() int { 122 | return 1 123 | } 124 | } 125 | ``` 126 | #####Branching 127 | ######If 128 | ``` 129 | if ; { //brackets are not optional for on liner ! 130 | // 131 | } 132 | 133 | if a := 1; a == ! { 134 | // 135 | }else { 136 | // 137 | } 138 | ``` 139 | ######Switch 140 | >No default fall through 141 | >Dont need an expression 142 | >Cases can be expressions 143 | ``` 144 | switch { 145 | case : 146 | default : 147 | } 148 | ``` 149 | ``` 150 | exm := 'hiren' 151 | switch exm { 152 | case 'hiren':fmt.Print("hiren") 153 | } 154 | ``` 155 | 156 | ######Fallthrough in Switch 157 | ``` 158 | yo := "boy" 159 | switch yo{ 160 | case "boy" : 161 | x := 1 162 | fallthrough 163 | case "yo": 164 | x := 2 165 | } 166 | ``` 167 | ###### Multiple case in Switch 168 | ``` 169 | yo := "boy" 170 | switch yo{ 171 | case "boy", "man" : // It can be list or whatever ! :P 172 | x := 1 173 | fallthrough 174 | case "yo": 175 | x := 2 176 | ``` 177 | ###### Use conditions in Switch 178 | ``` 179 | yo := "boy" 180 | switch{ 181 | case yo == "boy" , len(yo) == 2: 182 | x := 1 183 | case yo == "yo": 184 | x := 2 185 | ``` 186 | 187 | ######Loops 188 | ``` 189 | for i:=0; i < example; i++ { 190 | //block 191 | } 192 | ``` 193 | -------------------------------------------------------------------------------- /Html.txt: -------------------------------------------------------------------------------- 1 | Text tag : 2 | paragraph tag : 3 | // align = center,left,right,justify 4 | 5 | break tag : //left,right ,all 6 | non breaking space : 7 | 8 | phrase tag : // emphasize 9 | 10 | 11 | 12 | hiren 13 | hiren 14 | hiren says 15 | 16 | 17 | 18 | font tag : 19 | 20 | 21 | / 22 | 23 | 24 | 25 | 26 | heading tag : //h1~h6 27 | 28 | quotes tag : 29 | 30 | preformat tag : 31 | 32 | Font tag : 33 | 34 | 35 | List tag : ordered list // type = A , a , I ,i , upper-roman,lower-roman , upper-alpha , lower - alpha ,number 36 | unordered list // type=disc,circle , square 37 | definition list 38 | 39 | 40 | 41 | 42 | 43 | 44 | Image tag : 45 | 46 | 47 | 48 | 49 | Link tag: 50 | 51 | 52 | 53 | Table tag: 54 | 55 | 58 | 59 | 60 | 61 | 62 | set = where = 48 | ``` 49 | Data Types 50 | 51 | Type | Name 52 | --------|----------- 53 | Numerical | Integer,float,numeric,real , serial 54 | Character | char , varchar , text 55 | Logical | Boolean 56 | Temporal | Date , Time , Timestamp ,Interval , Timestamptz 57 | Binary | Bytea , Bit , Bit Varying 58 | Geo-Spatial | Point , Path , Polygon , Circle , Line 59 | Internet | Inet , Cidr , Macaddr 60 | Special | Enum , Range , Json , Xml ,Oid 61 | Array | [] 62 | Composite type | Type 63 | 64 | ###CLI 65 | change to postgres user and open psql prompt 66 | ``` 67 | sudo -u postgres psql postgres 68 | ``` 69 | list databases 70 | ``` 71 | postgres=# \l 72 | ``` 73 | list roles 74 | ``` 75 | postgres=# \du 76 | ``` 77 | create role 78 | ``` 79 | postgres=#CREATE ROLE demorole1 WITH LOGIN ENCRYPTED PASSWORD 'password1' CREATEDB; 80 | ``` 81 | alter role 82 | ``` 83 | postgres=#ALTER ROLE demorole1 CREATEROLE CREATEDB REPLICATION SUPERUSER; 84 | ``` 85 | drop role 86 | ``` 87 | postgres=#DROP ROLE demorole1; 88 | ``` 89 | create database 90 | ``` 91 | postgres=#CREATE DATABASE demodb1 WITH OWNER demorole1 ENCODING 'UTF8'; 92 | ``` 93 | grant privileges to new user 94 | ``` 95 | GRANT ALL PRIVILEGES ON DATABASE demodb1 TO demorole1; 96 | ``` 97 | drop database 98 | 99 | ``` 100 | postgres=#DROP DATABASE demodb1; 101 | ``` 102 | connect to database 103 | 104 | ``` 105 | \c 106 | ``` 107 | list tables in connected database 108 | 109 | ``` 110 | \dt 111 | 112 | ``` 113 | list columns on table 114 | 115 | ``` 116 | \d 117 | ``` 118 | backup database 119 | ``` 120 | pg_dump > 121 | ``` 122 | 123 | 124 | 125 | 126 | 127 | 128 | 129 | 130 | 131 | 132 | 133 | 134 | 135 | 136 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | Personal cheat sheet :smile: 2 | -------------------------------------------------------------------------------- /Redis.md: -------------------------------------------------------------------------------- 1 | ###Redis datastructures 2 | ``` 3 | string , list , hash , set and sorted set 4 | ``` 5 | ####String 6 | ######Set value 7 | ``` 8 | set 9 | set name "hiren" 10 | ``` 11 | ######Get value 12 | ``` 13 | get 14 | get name #return "hiren" 15 | ``` 16 | ######Get value using range 17 | ``` 18 | getrange 19 | getrange name 0 3 #return "hire" 20 | ``` 21 | ######Set value using range 22 | ``` 23 | setrange 24 | setrange name 5 RST 25 | ``` 26 | ######Override value 27 | ``` 28 | getset 29 | getset name "Rater Santo Tara" 30 | ``` 31 | ######Multiset value 32 | ``` 33 | mset 34 | mset name "Rater Santo Tara" age 20 35 | ``` 36 | ######Increment value (only works for numbers) 37 | ``` 38 | incr age ## increment age by 1 39 | ``` 40 | ######Decrement value 41 | ``` 42 | decr 43 | ``` 44 | ######Increment and decrement by specific number 45 | ``` 46 | incrby 5 47 | decrby 20 48 | ``` 49 | ######Float increment (only for integer ) 50 | ``` 51 | incrbyfloat 52 | ``` 53 | ######Set expire time 54 | ``` 55 | setex 56 | setex name 4 hiren 57 | ``` 58 | ######Only set value if doesnt exits 59 | ``` 60 | setnx 61 | ``` 62 | ######Multi setnx 63 | ``` 64 | msetnx 65 | ``` 66 | ######Length of a value 67 | ``` 68 | strlen 69 | ``` 70 | 71 | #### List 72 | ######Lpush ( Left push ) 73 | ``` 74 | lpush 75 | ``` 76 | ######Rpush ( Right push ) 77 | ``` 78 | rpush 79 | ``` 80 | ######Lpushx and Rpushx (push if the list is exits) 81 | ``` 82 | lpushx 83 | rpushx 84 | ``` 85 | ######Length of a list 86 | ``` 87 | llen 88 | llen hiren 89 | ``` 90 | ######Get values 91 | ``` 92 | lrange 93 | ``` 94 | Tips : For grabbing whole list use starting position = 0 and ending position = -1 95 | 96 | ###### Pop from left or right side 97 | ``` 98 | lpop 99 | rpop 100 | ``` 101 | ######Remove value 102 | ``` 103 | lrem 2 104 | ``` 105 | ######Insert middle 106 | ``` 107 | linsert before 108 | linsert after 109 | ``` 110 | ######Get value using index 111 | ``` 112 | lindex 113 | ``` 114 | ######Set value using index 115 | ``` 116 | lset 117 | ``` 118 | ######Trim 119 | ``` 120 | ltrim 121 | ``` 122 | #####List sorting 123 | ######Basic Sorting 124 | ``` 125 | sort 126 | ``` 127 | ###### Sort with limit 128 | ``` 129 | sort limit 130 | ``` 131 | ###### Sort descending or ascending 132 | ``` 133 | sort asc 134 | sort desc 135 | ``` 136 | ######Sort characters 137 | ``` 138 | sort alpha 139 | ``` 140 | 141 | ####Hash 142 | ######Set command 143 | ``` 144 | hset 145 | hset hiren age 20 146 | ``` 147 | ######Get command 148 | ``` 149 | hget 150 | ``` 151 | ######Get all value 152 | ``` 153 | hgetall 154 | ``` 155 | ######Return only keys or values 156 | ``` 157 | hvals 158 | hkeys 159 | ``` 160 | ######Check value existence 161 | ``` 162 | hexits 163 | ``` 164 | ######Increment 165 | ``` 166 | hincrby 167 | hincrbyfloat 168 | ``` 169 | ######Check length 170 | ``` 171 | hlen 172 | ``` 173 | ######Multiple get 174 | ``` 175 | hmget 176 | ``` 177 | ######Multipke set 178 | ``` 179 | hmset 180 | ``` 181 | ######Set if doesnt exits 182 | ``` 183 | hsetnx 184 | ``` 185 | ######Delete 186 | ``` 187 | hdel 188 | ``` 189 | ####Set 190 | ######Add single or multiple value 191 | ``` 192 | sadd 193 | ``` 194 | ######Remove value 195 | ``` 196 | srem 197 | ``` 198 | ######Show all members 199 | ``` 200 | smembers 201 | ``` 202 | ######CHeck if already exists or not 203 | ``` 204 | sismember 205 | ``` 206 | #####Check how many item in set 207 | ``` 208 | scard 209 | ``` 210 | ######Take random item from set 211 | ``` 212 | sranmember 213 | ``` 214 | ######Take random member out of the set 215 | ``` 216 | spop 217 | ``` 218 | ######Check member defference in two set 219 | ``` 220 | sdiff 221 | ``` 222 | ######Check difference and store in new set 223 | ``` 224 | sdiff 225 | ``` 226 | #####Intersection(common members) in both set 227 | ``` 228 | sinter 229 | ``` 230 | ######Union between sets 231 | ``` 232 | sunion 233 | ``` 234 | ######Store union result 235 | ``` 236 | sunionstore 237 | ``` 238 | ######Move value from 1 set to another 239 | ``` 240 | smove 241 | ``` 242 | 243 | ##Other Commands 244 | 245 | ######Search all keys 246 | ``` 247 | keys * 248 | ``` 249 | ######Search using specific pattern 250 | ``` 251 | keys hiren* 252 | keys hire 253 | ``` 254 | ######Check if key exist 255 | ``` 256 | exits 257 | ``` 258 | ######Check type of a key 259 | ``` 260 | type 261 | ``` 262 | #####Delete key 263 | ``` 264 | del 265 | ``` 266 | ######Move to different database 267 | ``` 268 | move 269 | move hiren 2 270 | ``` 271 | ######Select database 272 | ``` 273 | select 274 | select 1 275 | ``` 276 | ######Expire 277 | ``` 278 | expire 279 | ``` 280 | ######Time to live 281 | ``` 282 | ttl 283 | ``` 284 | 285 | 286 | 287 | 288 | 289 | 290 | 291 | 292 | 293 | 294 | 295 | 296 | 297 | 298 | 299 | 300 | 301 | 302 | 303 | 304 | 305 | 306 | 307 | 308 | 309 | 310 | 311 | 312 | 313 | 314 | 315 | 316 | 317 | 318 | 319 | 320 | 321 | 322 | 323 | -------------------------------------------------------------------------------- /archlinux-installation.md: -------------------------------------------------------------------------------- 1 | # Arch Linux Installation 2 | - Make Bootable USB or try it on Virtualbox 3 | - If want EFI boot then enable it in BIOS or VBox settings 4 | - If change Default(English) key map then find key map and load it 5 | ```bash 6 | ls /usr/share/kbd/keymaps/**/*.map.gz | less 7 | loadkeys de-latin1 8 | ``` 9 | - `ping google.com` 10 | - set time pool 11 | ```bash 12 | timedatectl set-ntp true 13 | timedatectl status 14 | ``` 15 | - Partition the Drive 16 | ```bash 17 | fdisk -l 18 | fdisk /dev/sda 19 | # create partition table 20 | > g # GPT 21 | > n # new partition for EFI 22 | > 1 23 | > +550M # last sector 24 | > n # for swap 25 | > 2 26 | > +2G # last sector 27 | > n 28 | > 3 29 | > t # change the partition type 30 | > 1 31 | > 1 # type 1 EFI system 32 | > t 33 | > 2 34 | > 19 # type 19 linux swap 35 | > w # write the partitions 36 | ``` 37 | - Make file system 38 | ```bash 39 | mkfs.fat -F32 /dev/sda1 40 | mkswap /dev/sda2 41 | swapon /dev/sda2 42 | mkfs.ext4 /dev/sda3 43 | ``` 44 | - Mount install target drive 45 | ```bash 46 | mount /dev/sda3 /mnt 47 | ``` 48 | - Base system install 49 | ```bash 50 | pacstrap /mnt base linux linux-firmware 51 | ``` 52 | - Generate fstab 53 | ```bash 54 | genfstab -U /mnt >> /mnt/etc/fstab 55 | ``` 56 | - change root 57 | ```bash 58 | arch-chroot /mnt 59 | ``` 60 | - set timezone 61 | ```bash 62 | ls /usr/share/zoneinfo/ 63 | ln -sf /usr/share/zoneinfo/Asia/Dhaka /etc/localtime 64 | ``` 65 | - Hardware clock 66 | ```bash 67 | hwclock --systohc 68 | ``` 69 | - Change locale 70 | ```bash 71 | pacman -S nano 72 | nano /etc/locale.gen 73 | # uncomment en_US.UTF-8 UTF-8 74 | locale-gen 75 | ``` 76 | - set hostname 77 | ```bash 78 | nano /etc/hostname 79 | # write archbox or any hostname you like 80 | ``` 81 | - write hosts file 82 | ```bash 83 | nano /etc/hosts 84 | 127.0.0.1 localhost 85 | ::1 localhost 86 | 127.0.1.1 archbox.localdomain archbox 87 | ``` 88 | - change root password and create new user 89 | ```bash 90 | passwd root 91 | useradd -m shadhin 92 | passwd shadhin 93 | usermod -aG wheel,audio,video,storage shadhin 94 | pacman -S sudo 95 | EDITOR=nano visudo 96 | # uncomment %wheel ALL=(ALL) ALL line 97 | ``` 98 | - Install GRUB 99 | ```bash 100 | pacman -S grub 101 | pacman -S efibootmgr dosfstools os-prober mtools 102 | mkdir /boot/EFI 103 | mount /dev/sda1 /boot/EFI 104 | grub-install --target=x86_64-efi --bootloader-id=grub_uefi --recheck 105 | grub-mkconfig -o /boot/grub/grub.cfg 106 | ``` 107 | - Install some packages 108 | ```bash 109 | pacman -S networkmanager git vim curl wget 110 | systemctl enable NetworkManager 111 | exit 112 | umount -l /mnt 113 | reboot or shutdown 114 | ``` 115 | - Install driver 116 | ```bash 117 | # for virtualbox 118 | sudo pacman -S xf86-video-fbdev 119 | # intel check wiki 120 | 121 | # amd 122 | 123 | # nvidia 124 | 125 | sudo pacman -S xorg xorg-xinit nitrogen picom firefox base-devel 126 | ``` 127 | - AUR setup 128 | ```bash 129 | git clone https://aur.archlinux.org/yay-git.git 130 | ls -la 131 | cd yay-git 132 | makepkg -si 133 | ``` 134 | - setup window manager etc 135 | ```bash 136 | yay -S nerd-fonts-mononoki 137 | # add distrotube repo 138 | sudo nano /etc/pacman.conf 139 | [dt-arch-repo] 140 | SigLevel = Optional DatabaseOptional 141 | Server = https://gitlab.com/dwt1/$repo/-/raw/master/$arch 142 | 143 | sudo pacman -Syyu 144 | sudo pacman -S dwm-distrotube-git st-distrotube-git dmenu-distrotube-git 145 | cp /etc/X11/xinit/xinitrc /home/shadhin/.xinitrc 146 | reboot 147 | startx 148 | ``` 149 | -------------------------------------------------------------------------------- /bash.md: -------------------------------------------------------------------------------- 1 | #####use $1 for 1st argument and $* for all argument passing to script 2 | #####use double quote " " 3 | ##### For debugging full script use #!/bin/bash -x 4 | ##### for debugging specific part use set +x to enable and set -x to disable 5 | #####Global variable $EDITOR 6 | #####Initialize empty variable "varname = " 7 | ###Conditional Expressions 8 | ```bash 9 | [[ $str ]] => Returns true if string is not empty 10 | [[ $str = "hiren" ]] => Check if string equals to "hiren" 11 | [[ $str="hiren"]] => always return true , because lack of space ! 12 | [[ -e $filename ]] => check if variable holds a file 13 | [[ -d $dir ]] => check if variable holds a directory 14 | [[ ! $1 ]] => if 1st argument is empty 15 | ``` 16 | ###### for more details type " help test " or " help [[ " 17 | 18 | ###Arithmetic test 19 | ##### bash only support integers :O ! 20 | ```bash 21 | Equlity test 22 | [[ arg1 OP agr2 ]] 23 | Where OP is 24 | -eq : equality 25 | -ne : not equal 26 | -lt : less than 27 | -gt : grrater than 28 | ``` 29 | 30 | ##### And => && , OR => || 31 | 32 | ###Input redirection 33 | ```bash 34 | Input => < 35 | Output => > and >> (append end of a file ) 36 | ``` 37 | ###If Else 38 | ```bash 39 | if [[ test ]]; then 40 | //code 41 | elif [[ test ]]; then 42 | //code 43 | else 44 | //hiren code :D 45 | fi 46 | ``` 47 | 48 | ###loop 49 | ######while => 50 | ``` 51 | while test; do 52 | //code 53 | done 54 | ``` 55 | 56 | ######until => 57 | ```bash 58 | until test; do 59 | //code 60 | done 61 | ``` 62 | ######similar to while loop, it continues as long as test returns false ! funny lol 63 | 64 | ######Classic for loop => 65 | ```bash 66 | for VAR in WORDS; do 67 | // code 68 | done 69 | ``` 70 | ###### Dont quote WORDS in for loop 71 | ###### Example: 72 | ```bash 73 | for i in u r a hiren;do 74 | echo $i; 75 | done 76 | ``` 77 | ######output 78 | ```bash 79 | u 80 | r 81 | a 82 | hiren 83 | ``` 84 | ######C-Style For Loop 85 | ```bash 86 | for (( init; test; update )); do 87 | ;; loop code 88 | done 89 | ``` 90 | ######Case statement 91 | ```bash 92 | case WORD in 93 | pattern1) 94 | code for pattern1;; 95 | pattern2) 96 | code for pattern2 97 | esac 98 | ``` 99 | ######Example: 100 | ```bash 101 | #!/bin/bash 102 | case $1 in 103 | cat) 104 | echo "meow";; 105 | dog) 106 | echo "woof";; 107 | *) 108 | echo "hiren" 109 | esac 110 | ``` 111 | #####Break and Continue 112 | 1. break 113 | * quits the loop 114 | 2. continue 115 | * skips rest of the current lopp 116 | * continues with the next iteration 117 | 118 | #####Error handling on redirecting :P 119 | ```bash 120 | cat hiren 2> log.txt 121 | cat hiren 2>> hiren.txt 122 | ``` 123 | 124 | 125 | 126 | 127 | 128 | 129 | 130 | -------------------------------------------------------------------------------- /django_query_debug.md: -------------------------------------------------------------------------------- 1 | # django query debuger 2 | ```python 3 | from django.db import connection, reset_queries 4 | import time 5 | import functools 6 | 7 | def query_debugger(func): 8 | 9 | @functools.wraps(func) 10 | def inner_func(*args, **kwargs): 11 | 12 | reset_queries() 13 | 14 | start_queries = len(connection.queries) 15 | 16 | start = time.perf_counter() 17 | result = func(*args, **kwargs) 18 | end = time.perf_counter() 19 | 20 | end_queries = len(connection.queries) 21 | 22 | print(f"Function : {func.__name__}") 23 | print(f"Number of Queries : {end_queries - start_queries}") 24 | print(f"Finished in : {(end - start):.2f}s") 25 | return result 26 | 27 | return inner_func 28 | ``` 29 | # usage 30 | ```python 31 | 32 | @query_debugger 33 | def view_func(): 34 | ..... 35 | ``` -------------------------------------------------------------------------------- /docker.md: -------------------------------------------------------------------------------- 1 | ####Pull a prebuilt image 2 | ``` 3 | sudo docker pull ubuntu 4 | ``` 5 | ####Interactive Shell 6 | ``` 7 | sudo docker run -i -t ubuntu /bin/bash 8 | ``` 9 | #####Disconnect from shell : press Ctrl P + Ctrl Q 10 | ####Search docker instance 11 | ``` 12 | sudo docker search 13 | ``` 14 | ####Pull any instance 15 | ``` 16 | sudo docker pull 17 | ``` 18 | ####List all docker instance 19 | ``` 20 | sudo docker ps 21 | ``` 22 | ####Kill instance 23 | ``` 24 | sudo docker kill 25 | ``` 26 | -------------------------------------------------------------------------------- /git.md: -------------------------------------------------------------------------------- 1 | #### Username 2 | ``` 3 | git config --global user.name "Your Name Here" 4 | ``` 5 | #### Email 6 | ``` 7 | git config --global user.email "hiren@mail.com" 8 | ``` 9 | #### Password caching 10 | ``` 11 | git config --global credential.helper cache 12 | ``` 13 | ###### git will cache your password for 15 minutes 14 | #### Set the cache to timeout after 1 hour (setting is in seconds) 15 | ``` 16 | git config --global credential.helper 'cache --timeout=3600' 17 | ``` 18 | #### Enable color output 19 | ``` 20 | color-ui = git config --global color.ui true 21 | ``` 22 | ####Edit default editor 23 | ``` 24 | git config --global core.editor "nano" 25 | ``` 26 | ###Shortcut way :D 27 | ``` 28 | git init 29 | git status 30 | git add 31 | git commit -m "Add cute octocat story" 32 | ``` 33 | #### Add specific pattern 34 | ``` 35 | git add '*.txt' 36 | ``` 37 | #### Only add previously 38 | ``` 39 | git commit -a 40 | ``` 41 | ####Add commit message using the editor 42 | ``` 43 | git commit 44 | ``` 45 | ####Add Commit message without the editor 46 | ``` 47 | git commit -m 'commit mesg' 48 | ``` 49 | #### Skip the staging part(y) ;) 50 | ``` 51 | git commit -am 'hiren' 52 | ``` 53 | ####Show difference 54 | ``` 55 | git diff filename 56 | ``` 57 | ``` 58 | git diff HEAD filename 59 | ``` 60 | ``` 61 | git diff --staged filename 62 | ``` 63 | ####Show all commit history 64 | ``` 65 | git log 66 | ``` 67 | ####Commit history statistics 68 | ``` 69 | git log --stat 70 | ``` 71 | ####Commit history in one line 72 | ``` 73 | git log --oneline 74 | ``` 75 | ####Commit history with graph ! (Useful for branches) 76 | ``` 77 | git log --graph 78 | ``` 79 | ####Commit history of all braches 80 | ``` 81 | git log --graph -all 82 | ``` 83 | ####Commit history of all braches with brach name 84 | ``` 85 | git log --graph --all --decorate 86 | ``` 87 | ####Show working and list of all branch 88 | ``` 89 | git branch 90 | ``` 91 | ####Create a new branch 92 | ``` 93 | git branch branchName 94 | ``` 95 | ####Switch to branch 96 | ``` 97 | git checkout branchName 98 | ``` 99 | ####Shortcut:Create and switch branch 100 | ``` 101 | git checkout -b brachName 102 | ``` 103 | #####Marging branch 104 | ``` 105 | git marge branchName 106 | ``` 107 | ####Delete a branch 108 | ``` 109 | git branch -d branchName 110 | ``` 111 | ####Difference between commits 112 | ``` 113 | git diff 114 | git diff WETE6874EWR 54qwertwe6q 115 | ``` 116 | ####Rebase 117 | ``` 118 | git rebase branchName 119 | ``` 120 | ####Remote URL 121 | ``` 122 | git remote add 123 | ``` 124 | ####Git push 125 | ``` 126 | git push -u origin master 127 | ``` 128 | #####Then for next time 129 | ``` 130 | git push 131 | ``` 132 | ####Interactive adding 133 | ``` 134 | git add -i 135 | ``` 136 | ####Removing untracked files from a git repo 137 | ``` 138 | git clean -df 139 | ``` 140 | ######You only need to pass -d if you have untracked directories. You only need to pass -f (force) if you have git configured with clean.requireForce set to true, which you likely do. 141 | #####avoid removing files unintentionally, run the following first 142 | ``` 143 | git clean -n 144 | ``` 145 | ######This is a 'dry run' and it tells you which files git plans on removing before it actually removes them. 146 | ####This will give you options, including removing files that match a pattern. 147 | ``` 148 | git clean -i 149 | ``` 150 | ####Stash 151 | #####Stash latest changes 152 | ``` 153 | git stash 154 | ``` 155 | #####Stash list 156 | ``` 157 | git stash list 158 | ``` 159 | #####Stash with message 160 | ``` 161 | git stash save "Your Boring Message" 162 | ``` 163 | #####Apply latest stash to working directory 164 | ``` 165 | git stash apply 166 | ``` 167 | #####Drop stash from list 168 | ``` 169 | git stash pop stash@{1} 170 | ``` 171 | #####Drop stash from list 172 | ``` 173 | git stash drop 174 | ``` 175 | ####Alias 176 | Create alias of git commands 177 | ``` 178 | git config --global alias. 179 | git config --global alias.a add 180 | ``` 181 | 182 | 183 | 184 | 185 | 186 | -------------------------------------------------------------------------------- /mongo.md: -------------------------------------------------------------------------------- 1 | ####Term 2 | * Collection : Table (SQL) 3 | * Document : Record or Row (SQL) 4 | * Field (key : value) : Column (SQL) 5 | 6 | ####Simple Commands 7 | * Connect mongo shell : mongo 8 | * Show all databases : show dbs 9 | * Connect to a database : use databaseName 10 | * show collections in current database : show collections 11 | * Show connected database : db 12 | * Show list of documents : db.links.count() 13 | 14 | ####Insert 15 | ``` 16 | db.collection.insert({}) 17 | ``` 18 | Example 19 | ``` 20 | db.links.insert({name : "hello",age : "fuck" , tag :["s","x"]}) 21 | ``` 22 | Javascript way 23 | ``` 24 | var doc = {}; 25 | doc.title = "net"; 26 | doc.age = "fuck"; 27 | db.links.save(doc) #now save 28 | ``` 29 | Print/Show 30 | ``` 31 | db.links.find() 32 | ``` 33 | Or for nice output 34 | ``` 35 | db.links.find().forEach(printjson) 36 | ``` 37 | Or 38 | ``` 39 | db.collections.find().pretty() 40 | ``` 41 | Show object creation time 42 | ``` 43 | db.links.find()[1]._id.getTimestamp() 44 | ``` 45 | 46 | #### Query 47 | Find by key-value / return cursor object 48 | ``` 49 | db.DOCUMENTNAME.find({ key : value }) 50 | ``` 51 | Return single object 52 | ``` 53 | db.DOCUMENTNAME.findOne({ key : value }).SUBCATEGORY 54 | ``` 55 | Print specific value 56 | ``` 57 | db.DOCUMENTNAME.find({ key : value } , { key : 1 , key : 1 , _id : 0} ) # Key : 1 means True and Key : 0 means False => For 58 | enable / disable certain value for printing 59 | ``` 60 | Quering nested object 61 | ``` 62 | db.DOCUMENTNAME.find({ key.subobject : value }) 63 | db.DOCUMENTNAME.find({ key : value } , {key.subobject : 0}) 64 | ``` 65 | Find object greater/less than or equal to 66 | ``` 67 | db.DOCUMENTNAME.find({ key : {$gt : 20} }) 68 | db.DOCUMENTNAME.find({ key : {$lt : 20} }) 69 | db.DOCUMENTNAME.find({ key : {$gt : 20 , $lt : 25} }) 70 | db.DOCUMENTNAME.find({ key : {$gte : 20 , $lt : 25} }) 71 | ``` 72 | Some others operators : $in = include , $nin = not include 73 | ``` 74 | db.DOCUMENTNAME.find({ key : {$in : [20 , 30] } }) 75 | db.DOCUMENTNAME.find({ key : {$nin : [20 , 30] } }) 76 | db.DOCUMENTNAME.find({ key : {$ne : "code" } }) 77 | ``` 78 | $all operator : find all values not just one 79 | ``` 80 | db.document.find({'hiren':{ $all : ['rater' , 'santo' , 'tara' }}) 81 | ``` 82 | Now equal operator 83 | ``` 84 | db.hiren.find({ $ne : "nish" }) 85 | ``` 86 | Boolean operators : $or , $nor = not or , $and 87 | ``` 88 | db.users.find({ $or : [{ 'name.first' : "Naima" }, { 'name.last" : "Anjum"}] 89 | db.users.find({ $nor : [{ 'name.first' : "Naima" }, { 'name.last" : "Anjum"}] 90 | db.users.find({ $and : [{ 'name.first' : "Naima" }, { 'name.last" : "Anjum"}] 91 | ``` 92 | Specialized operator : $exits , $not 93 | ``` 94 | db.users.find({ email : { $exits : true }},) 95 | db.links.find({ age : { $not : {$lt : 100 }}} 96 | ``` 97 | 98 | Some Other Operator : 99 | $mod 100 | $elemMatch 101 | $where 102 | ##remove duplicate 103 | ``` 104 | db.links.distinct('favourites') 105 | ``` 106 | db.links.group({ key : { userId : true }) 107 | 108 | 109 | Update : 110 | db.users.update({ 'name.last' : 'John'}, { job : 'Developer'}); 111 | db.users.update({name : "Hiren"} , {name : "Hiren Down" , job : "Python Developer"} ) #Find name hiren and replace with Hiren Down and Job Bla bla 112 | 113 | -------------------------------------------------------------------------------- /mysql.md: -------------------------------------------------------------------------------- 1 | ####Connect from terminal 2 | ``` 3 | mysql -u -p 4 | ``` 5 | ####Create database 6 | ``` 7 | create database 8 | ``` 9 | ####Show databases 10 | ``` 11 | show databases 12 | ``` 13 | ####Connect to a database 14 | ``` 15 | use 16 | ``` 17 | ####Create table 18 | ``` 19 | create table ( 20 | , 21 | 22 | ); 23 | ``` 24 | ####Table deffinition 25 | ``` 26 | explain 27 | ``` 28 | 29 | ################ MySQL Data Type #################### 30 | 31 | :::MySQL text types::: 32 | Text type Maximum number of bytes 33 | Tinytext 255 34 | Text 65,535 35 | Mediumtext 6,777,215 36 | Longtext 4,294,967,295 37 | 38 | :::MySQL integer types::: 39 | Type Signed range Unsigned range 40 | Tinyint −128 to 127 0 to 255 41 | Smallint −32,768 to 32,767 0 to 65,535 42 | Mediumint −8,388,608 to 8,388,607 0 to 16,777,215 43 | Int −2,147,483,648 to 2,147,483,647 0 to 4,294,967,295 44 | Bigint −9,223,372,036,854,775,808 to 9,223,372,036,854,775,807 0 to 18,446,744,073,709,551,615 45 | 46 | 47 | :::MySQL floating-point types:::: 48 | Type Numeric range 49 | Float(p,s) −3.402823466E+38 to −1.175494351E-38 50 | and 1.175494351E-38 to 3.402823466E+38 51 | 52 | Double(p,s) −1.7976931348623157E+308 to −2.2250738585072014E-308 53 | and 2.2250738585072014E-308 to 1.7976931348623157E+308 54 | 55 | 56 | :::MySQL temporal types::: 57 | 58 | Type Default format Allowable values 59 | Date YYYY-MM-DD 1000-01-01 to 9999-12-31 60 | Datetime YYYY-MM-DD HH:MI:SS 1000-01-01 00:00:00 to 9999-12-31 23:59:59 61 | Timestamp YYYY-MM-DD HH:MI:SS 1970-01-01 00:00:00 to 2037-12-31 23:59:59 62 | Year YYYY 1901 to 2155 63 | Time HHH:MI:SS −838:59:59 to 838:59:59 64 | 65 | 66 | :::Date format components::: 67 | Component Definition Range 68 | YYYY Year, including century 1000 to 9999 69 | MM Month 01 (January) to 12 (December) 70 | DD Day 01 to 31 71 | HH Hour 00 to 23 72 | HHH Hours (elapsed) −838 to 838 73 | MI Minute 00 to 59 74 | SS Second 00 to 59 75 | 76 | $$$$$$$$$$$$$$$$$$$$$ From CBT Nugget $$$$$$$$$$$$$$$$$$$$$$ 77 | :::MySQL String Datatype::: 78 | 79 | >>char:fixed length,non-binary 0-255 80 | >>varchar:variable length,non-binary 0-65,535 81 | >>text,tinytext,mediumtext,longtext 82 | >>binary:fixed length,binary 0-255 83 | >>varbinary:variable length,binary 0-65,535 84 | >>blob(BLOB=Binary Large Obeject Data),tinyblob,mediumblob,longblob (blob used for encrypted data) 85 | >>enum:integer list(select one) 86 | >>set:binary list(select >=1) 87 | 88 | :::MySQL Floating Point::: 89 | >>Float : single precision 90 | >>Double : Double precision 91 | >> Decimal : var. precision 92 | 93 | :::MySQL Temomporal Data :: 94 | Type Storage-Required Range 95 | >>Date 3 bytes 1000-01-01 to 9999-12-31 96 | >>time 3 bytes -838:59:59 to 838:59:59 97 | >>datetime 8 bytes 1000-01-01 00:00:00 to 9999-12-31 23:59:59 98 | >>timestamp 4 bytes 1970-01-01 00:00:00 to mid-year 2037 99 | >>year 1 byte 1901 to 2155(for year(4)) , 1970 to 2069(for year(2)) 100 | 101 | ############################### MySQL Commond ######################################## 102 | 103 | login : mysql -u root -p 104 | show available database : SHOW DATABASES; 105 | Create database : CREATE DATABASE databasename; 106 | select database : use databasename; 107 | show table of previously selected database : SHOW TABLES; 108 | use the describe command (or desc for short) to look at the table definition: DESC tablename; |or| describe tablename; 109 | Table create : CREATE TABLE tablename ( data type declare ); 110 | 111 | ###########################@@@@@@############### 112 | 113 | Show table definition : explain tablename; 114 | INSERT DATA : insert into tablename values(DATA); 115 | OR insert into tablename(column) value (data); 116 | Select data : select * from tablename; 117 | or select columnName,columnName2 from tablename; 118 | 119 | Data Type : 120 | varchar = create table person( name varchar(100)) ; 121 | text = create table emai ( body text); 122 | int = create table person (age integer); 123 | int = create table person (age integer unsigned ); # expected +ve value 124 | *There is also tinyint and mediumint 125 | decimal = create table student(av g_score deimal(10,5) ; #decimal(precision ,scope) 126 | auto_increment = create table student( id integar auto_increment) ; 127 | date , time ,datetime : 128 | date = 'YYYY-MM-DD' 129 | time = '[H]HH:MM:SS' 130 | datetime = 'YYYY-MM-DD HH:MM:SS' 131 | ex. create table order(order_date date) ; 132 | Bool : 0 is false and non-0 is true 133 | ex. create table order (fulfilled boolean); 134 | Default values : create table order ( coupon varchar(100) default "no discount" ) ; 135 | 136 | Primary key : create table hiren( id int primary key auto_increment); 137 | 138 | 139 | Alter: 140 | Alter table : alter table tableName rename newTableName ; 141 | Alter Column : alter table cases add columnName varchar(100); 142 | Alter .............. 143 | 144 | 145 | Delete And Drop: 146 | Drop table : Drop table tableName ; 147 | delete : delete from tableName ; 148 | 149 | Update : 150 | update .................................. 151 | 152 | Where ,limit: 153 | Select * from tableName where x = "a"; 154 | operators for where :- 155 | = ALL NOT 156 | > AND OR 157 | < ANY SOME 158 | >= Between IN 159 | <= EXITS LIke 160 | <> 161 | != 162 | 163 | select * from tableName Limit 5; 164 | -------------------------------------------------------------------------------- /nmap.md: -------------------------------------------------------------------------------- 1 | ##Chapter 1 ~::~ Nmap Fundamentals 2 | ####Listing open ports on a remote host 3 | ``` 4 | nmap hiren.com 5 | ``` 6 | ####Version detection 7 | ``` 8 | nmap -sV hiren.me 9 | ``` 10 | ####Aggressive detection 11 | ``` 12 | nmap -sC -sV -O 13 | ``` 14 | ####Finding live hosts 15 | ``` 16 | nmap -sP 192.168.1.1/24 17 | ``` 18 | ####Scanning using specific port ranges 19 | ``` 20 | nmap -p80 192.168.1.1/24 21 | ``` 22 | #####More 23 | * Port list: 24 | ``` 25 | nmap -p80,443 localhost 26 | ``` 27 | * Port range: 28 | ``` 29 | nmap -p1-100 localhost 30 | ``` 31 | * All ports: 32 | ``` 33 | nmap -p- localhost 34 | ``` 35 | * Specific ports by protocols: 36 | ``` 37 | nmap -pT:25,U:53 38 | ``` 39 | * Service name: 40 | ``` 41 | nmap -p smtp 42 | ``` 43 | * Service name wildcards: 44 | ``` 45 | nmap -p smtp* 46 | ``` 47 | * Only ports registered in Nmap services: 48 | ``` 49 | nmap -p[1-65535] 50 | ``` 51 | ####Scan using script 52 | ``` 53 | nmap --script 56 | Hiren 57 |