Manually get the short hostname
GNU Coreutils 'hostname' does not support the -s flag.
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@ -81,7 +81,7 @@ unset _flatpak_xdg_path
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# Basic exports.
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export HISTFILE=""
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export PS1="$(id -un)@$(hostname -s)\$ "
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export PS1="$(id -un)@$(hostname | sed 's/\..*//')\$ "
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export TIME_STYLE=long-iso # Used by GNU 'ls'.
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# Bash-specific settings that will not work in other Bourne-compatible shells.
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