├── LICENSE
├── README.md
└── backpack


/LICENSE:
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 1 | MIT License
 2 | 
 3 | Copyright (c) 2018 sineemore
 4 | 
 5 | Permission is hereby granted, free of charge, to any person obtaining a copy
 6 | of this software and associated documentation files (the "Software"), to deal
 7 | in the Software without restriction, including without limitation the rights
 8 | to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 9 | copies of the Software, and to permit persons to whom the Software is
10 | furnished to do so, subject to the following conditions:
11 | 
12 | The above copyright notice and this permission notice shall be included in all
13 | copies or substantial portions of the Software.
14 | 
15 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 | IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
18 | AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 | LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
20 | OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
21 | SOFTWARE.
22 | 


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/README.md:
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 1 | # backpack
 2 | 
 3 | backpack is a small wrapper around ssh.
 4 | 
 5 | It transfers contents of a local file ~/.backpack and itself to remote host, sources it and continues with normal ssh session.
 6 | 
 7 | 
 8 | * works best as `alias ssh=backpack`
 9 | * won't create any files on remote hosts (even temporary)
10 | * tries to fallback to normal ssh when remote shell is not bash
11 | * **self-replication** allows you to use backpack again directly from remote host, in this case backpack will keep original local file as you go deaper from host to host.
12 | 
13 | Example of ~/.backpack file:
14 | 	
15 | ```sh
16 | PS1="\u \[\033[1;31m\]\h\[\033[0m\] \W "
17 | 
18 | alias ssh=backpack
19 | alias l="ls -alah"
20 | alias juu="perl -MJSON::PP -E 'local \$/; say JSON::PP->new->pretty(1)->encode(decode_json(<>));'"
21 | 
22 | human() {
23 | 	if [ $# -ne 0 ]; then
24 | 		numfmt --to=iec "$@"
25 | 	else
26 | 		cat | numfmt --to=iec "$@"
27 | 	fi
28 | }
29 | 
30 | bind '"\e[A": history-search-backward'
31 | bind '"\e[B": history-search-forward'
32 | 
33 | # I use st terminal, but probably there is no st.info
34 | TERM=xterm-256color
35 | ```
36 | 
37 | Also check similar project [sshrc](https://github.com/Russell91/sshrc).
38 | 


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/backpack:
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 1 | #!/bin/sh
 2 | if [ ! -t 1 -o ! $# -eq 1 -o ! -f ~/.backpack -a -z "$BACKPACK" ]; then
 3 | 	exec ssh "$@"
 4 | fi
 5 | if [ -z "$BACKPACK" ]; then
 6 | 	encode() {
 7 | 		base64 | tr -d "\n"
 8 | 	}
 9 | 	RC="$(encode < ~/.backpack)"
10 | 	FUNCTION="$(encode <<EOF
11 | backpack() (
12 | 	$(cat "$(realpath "$0")")
13 | )
14 | EOF
15 | )"
16 | 	BACKPACK="$(encode <<EOF
17 | extract_backpack() {
18 | 	exec "\$BASH" --rcfile <(
19 | 		cat <<'EOF_2'
20 | [ -f /etc/profile ] && . /etc/profile
21 | for f in ~/.bash_profile ~/.bash_login ~/.profile; do
22 | 	if [ -f "\$f" ]; then
23 | 		. "\$f"
24 | 		break
25 | 	fi
26 | done
27 | EOF_2
28 | 		decode "$FUNCTION"
29 | 		decode "$RC"
30 | 	) -i;
31 | }
32 | EOF
33 | )"
34 | fi
35 | INIT="$(
36 | cat <<EOF
37 | [ -n "\$BASH" ] && which base64 fold >/dev/null \
38 | && eval 'decode() { printf %s "\$1" | fold -w 64 | base64 -d; }' \
39 | && export BACKPACK="$BACKPACK" \
40 | && eval "\$(decode "\$BACKPACK")" \
41 | && extract_backpack
42 | [ -x "\$SHELL" ] && exec "\$SHELL" -l
43 | exec /bin/sh -i
44 | EOF
45 | )"
46 | exec ssh -t "$1" "$INIT"
47 | 


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