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82 lines
2.5 KiB
Bash
82 lines
2.5 KiB
Bash
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#!/bin/bash
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#
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# By Victor Orlikowski. Public domain.
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#
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# This script maintains snapshots of each pane's
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# history buffer, for each tmux session you are running.
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#
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# It is intended to be run by cron, on whatever interval works
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# for you.
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# Maximum number of snapshots to keep.
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max_backups=12
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# Names of sessions you may wish to exclude from snapshotting,
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# space separated.
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ignore_sessions=""
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# The directory into which you want your snapshots placed.
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# The default is probably "good enough."
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backup_dir=~/.tmux_backup/snapshot
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########################################################################
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# Rotate previous backups.
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i=${max_backups}
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while [[ ${i} != 0 ]] ; do
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if [ -d ${backup_dir}.${i} ] ; then
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if [[ ${i} = ${max_backups} ]] ; then
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rm -r ${backup_dir}.${i}
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else
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mv ${backup_dir}.${i} ${backup_dir}.$((${i}+1))
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fi
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fi
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i=$((${i}-1))
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done
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if [ -d ${backup_dir} ] ; then
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mv ${backup_dir} ${backup_dir}.1
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fi
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## Dump hardcopy from all windows in all available tmux sessions.
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unset TMUX
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for session in $(tmux list-sessions | cut -d' ' -f1 | sed -e 's/:$//') ; do
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for ignore_session in ${ignore_sessions} ; do
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if [ ${session} = ${ignore_session} ] ; then
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continue 2
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fi
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done
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# Session name can contain the colon character (":").
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# This can screw up addressing of windows within tmux, since
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# target windows are specified as target-session:target-window.
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#
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# We use uuidgen to create a "safe" temporary session name,
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# which we then use to create a "detached" session that "links"
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# to the "real" session that we want to back up.
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tmpsession=$(uuidgen)
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tmux new-session -d -s "$tmpsession" -t "$session"
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HISTSIZE=$(tmux show-options -g -t "$tmpsession" | grep "history-limit" | awk '{print $2}')
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for win in $(tmux list-windows -t "$tmpsession" | grep -v "^\s" | cut -d' ' -f1 | sed -e 's/:$//'); do
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session_dir=$(echo "$session" | sed -e 's/ /_/g' | sed -e 's%/%|%g')
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win_spec="$tmpsession":"$win"
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if [ ! -d ${backup_dir}/${session_dir}/${win} ] ; then
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mkdir -p ${backup_dir}/${session_dir}/${win}
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fi
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for pane in $(tmux list-panes -t "$win_spec" | cut -d' ' -f1 | sed -e 's/:$//'); do
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pane_path=${backup_dir}/${session_dir}/${win}/${pane}
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pane_spec="$win_spec"."$pane"
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tmux capture-pane -t "$pane_spec" -S -${HISTSIZE}
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tmux save-buffer ${pane_path}
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if [ ! -s ${pane_path} ] ; then
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sleep 1
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rm ${pane_path}
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fi
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done
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done
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tmux kill-session -t "$tmpsession"
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done
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