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zsh: fidget with screen/tmux message This should speed things up very slightly by avoiding some `grep` action in the common case of no detached screens/tmuxes.
author Augie Fackler <raf@durin42.com>
date Mon, 14 Nov 2022 11:02:35 -0500
parents b78aa03c0c00
children
comparison
equal deleted inserted replaced
525:b0fa9e7cadac 526:852565046ed0
8 8
9 if [ ! "$SHOWED_SCREEN_MESSAGE" = "true" ]; then 9 if [ ! "$SHOWED_SCREEN_MESSAGE" = "true" ]; then
10 # Use /bin/which explicitly because we have a shell function 10 # Use /bin/which explicitly because we have a shell function
11 # that confuses the zsh built-in which. 11 # that confuses the zsh built-in which.
12 if sh -c 'which screen' 2> /dev/null > /dev/null; then 12 if sh -c 'which screen' 2> /dev/null > /dev/null; then
13 detached_screens=`screen -list | grep Detached | sed -e 's/ (Detached)//'` 13 SCREENS_OUTPUT="$(screen -list)"
14 if [ ! -z "$detached_screens" ]; then 14 if [[ "${SCREENS_OUTPUT}" =~ Detached ]] ; then
15 detached_screens=`echo "${SCREENS_OUTPUT}" | grep Detached | sed -e 's/ (Detached)//'`
15 echo "+---------------------------------------+" 16 echo "+---------------------------------------+"
16 echo "| Detached screens are available: |" 17 echo "| Detached screens are available: |"
17 echo "$detached_screens" 18 echo "$detached_screens"
18 echo "+---------------------------------------+" 19 echo "+---------------------------------------+"
19 fi 20 fi
21 unset SCREENS_OUTPUT
22 unset detached_screens
20 fi 23 fi
21 export SHOWED_SCREEN_MESSAGE="true" 24 export SHOWED_SCREEN_MESSAGE="true"
22 fi 25 fi
23 26
24 if [ ! "$SHOWED_TMUX_MESSAGE" = "true" ]; then 27 if [ ! "$SHOWED_TMUX_MESSAGE" = "true" ]; then
25 if which tmux 2> /dev/null > /dev/null; then 28 if which tmux 2> /dev/null > /dev/null; then
26 detached_screens=$(tmux ls 2> /dev/null | grep -v attached) 29 detached_screens="$(tmux ls 2> /dev/null)"
30 if [ ! -z "$detached_screens" ]; then
31 detached_screens="$(echo "$detached_screens" | grep -v attached)"
32 fi
27 if [ ! -z "$detached_screens" ]; then 33 if [ ! -z "$detached_screens" ]; then
28 echo "+-----------------------------------------------------------+" 34 echo "+-----------------------------------------------------------+"
29 echo "| Detached tmux sessions are available: |" 35 echo "| Detached tmux sessions are available: |"
30 echo "$detached_screens" 36 echo "$detached_screens"
31 echo "+-----------------------------------------------------------+" 37 echo "+-----------------------------------------------------------+"
32 fi 38 fi
39 unset detached_screens
33 fi 40 fi
34 export SHOWED_TMUX_MESSAGE="true" 41 export SHOWED_TMUX_MESSAGE="true"
35 fi 42 fi
36 43
37 # If available, source private extensions stored in a different repo 44 # If available, source private extensions stored in a different repo