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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
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1 # Augie Fackler's zshrc file
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2
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3 for file in $(ls $HOME/.shell.d/*.{,z}sh) ; do
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4 source $file
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5 done
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6
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7 # Login greeting ------------------
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8
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9 if [ ! "$SHOWED_SCREEN_MESSAGE" = "true" ]; then
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10 # Use /bin/which explicitly because we have a shell function
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11 # that confuses the zsh built-in which.
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12 if sh -c 'which screen' 2> /dev/null > /dev/null; then
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13 SCREENS_OUTPUT="$(screen -list)"
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14 if [[ "${SCREENS_OUTPUT}" =~ Detached ]] ; then
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15 detached_screens=`echo "${SCREENS_OUTPUT}" | grep Detached | sed -e 's/ (Detached)//'`
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16 echo "+---------------------------------------+"
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17 echo "| Detached screens are available: |"
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18 echo "$detached_screens"
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19 echo "+---------------------------------------+"
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20 fi
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21 unset SCREENS_OUTPUT
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22 unset detached_screens
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23 fi
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24 export SHOWED_SCREEN_MESSAGE="true"
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25 fi
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26
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27 if [ ! "$SHOWED_TMUX_MESSAGE" = "true" ]; then
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28 if which tmux 2> /dev/null > /dev/null; then
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29 detached_screens="$(tmux ls 2> /dev/null)"
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30 if [ ! -z "$detached_screens" ]; then
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31 detached_screens="$(echo "$detached_screens" | grep -v attached)"
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32 fi
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33 if [ ! -z "$detached_screens" ]; then
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34 echo "+-----------------------------------------------------------+"
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35 echo "| Detached tmux sessions are available: |"
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36 echo "$detached_screens"
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37 echo "+-----------------------------------------------------------+"
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38 fi
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39 unset detached_screens
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40 fi
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41 export SHOWED_TMUX_MESSAGE="true"
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42 fi
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43
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44 # If available, source private extensions stored in a different repo
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45 if [[ -a ~/.private/zshrc ]]; then
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46 source ~/.private/zshrc
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47 fi
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48
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49 if [[ -a ~/.zshrc-machine ]]; then
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50 source ~/.zshrc-machine
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51 fi