Created
May 17, 2020 18:25
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automatic session creator for tmux.
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| #!/bin/bash | |
| create_session() { | |
| # robustly split the space separated list of window names. | |
| read -r -a WINDOWS <<< "$NAMES" | |
| # override parameter list with names of windows. | |
| set -- "${WINDOWS[@]}" | |
| # create session with first window argument. | |
| tmux new -d -s "$SESSION" -n "$1" || return 1 | |
| shift | |
| # `seq 0` actually produces the output `1 0` thus the script would | |
| # break if the user only wants 1 window, this check prevents that. | |
| [ $# == 0 ] && return 0 | |
| # create the remaining windows | |
| for i in $(seq $#) | |
| do | |
| # use indirect expansion to get the name of the window. | |
| tmux new-window -d -n "${!i}" -t "$SESSION:$i" || return 1 | |
| done | |
| return 0 | |
| } | |
| bail() { | |
| echo "[ERROR]: could not create session '$SESSION'." | |
| exit 1 | |
| } | |
| while [[ $# -gt 0 ]] | |
| do | |
| case "$1" in | |
| -h|--help) | |
| PROG_NAME=$(basename "$0") | |
| echo "$PROG_NAME" | |
| echo "automatic session creator for tmux." | |
| echo " " | |
| echo "USAGE:" | |
| echo " $PROG_NAME SESSION_NAME <NAMES> [OPTIONS]" | |
| echo " " | |
| echo "OPTIONS:" | |
| echo " -h, --help show brief help" | |
| echo " -a, --attach automatically attach to the session" | |
| echo "NAMES:" | |
| echo " -n, --names <LIST> names of windows, separated by space; ignored if the" | |
| echo " session already exists and [-a|--attach] is present" | |
| exit 0 | |
| ;; | |
| -a|--attach) | |
| ATTACH=1 | |
| shift | |
| ;; | |
| -n*|--names*) | |
| shift | |
| NAMES="$1" | |
| shift | |
| ;; | |
| *) | |
| # NOTE: any misspelled arguments fall here as well, hence we are only | |
| # interested in grabbing the first positional argument, ignore all else. | |
| [ -z "$SESSION" ] && SESSION="$1" | |
| shift | |
| ;; | |
| esac | |
| done | |
| # if the SESSION name and window names are not empty then try to create a new session. | |
| if [ -n "$SESSION" -a -n "$NAMES" ]; then | |
| # check if the session already exists | |
| # NOTE: this also checks if there is a server already running. | |
| tmux has-session -t "$SESSION" 2>/dev/null | |
| if [ $? == 0 ]; then | |
| # if the session already exists but no `attach` flag was given then alert user. | |
| [ -z "$ATTACH" ] && echo "[WARN]: '$SESSION' already exists, use [-a|--attach] to attach to it." | |
| else | |
| # otherwise create it, bail if something goes wrong. | |
| create_session || bail | |
| fi | |
| # lastly, attach to the session if the `attach` flag was given. | |
| [ -n "$ATTACH" ] && tmux a -t "$SESSION" | |
| else | |
| [ -z "$SESSION" ] && echo "[ERROR]: missing session name, use 'tmux-dev --help' for usage." | |
| [ -z "$NAMES" ] && echo "[ERROR]: missing window names, use 'tmux-dev --help' for usage." | |
| exit 1 | |
| fi |
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I got tired of having to manually create
tmuxsessions with multiple windows (which I use a lot), this became particularly annoying after I realized that sessions disappear once you restart your machine, so I made this script to make the process much faster.