prezto_config/modules/screen/init.zsh

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#
# Defines GNU Screen aliases and provides for auto launching it at start-up.
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#
# Authors:
# Sorin Ionescu <sorin.ionescu@gmail.com>
#
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# Aliases
alias sl="screen -list"
alias sn="screen -U -S"
alias sr="screen -a -A -U -D -R"
# Auto Start
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if [[ -z "$STY" ]] && zstyle -t ':omz:module:screen' auto-start; then
session="$(
screen -list 2> /dev/null \
| sed '1d;$d' \
| awk '{print $1}' \
| head -1)"
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if [[ -n "$session" ]]; then
exec screen -x "$session"
else
exec screen -a -A -U -D -R -m "$SHELL" -l
fi
fi