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|
#!/usr/bin/env bash
set -o pipefail
shopt -s lastpipe
shopt -s extglob
export SHELL=bash
PROG=$(basename "$0")
SYSZ_VERSION=1.4.3
SYSZ_HISTORY=${SYSZ_HISTORY:-${XDG_CACHE_HOME:-~/.cache}/sysz/history}
declare -a STATES
_sysz_keys() {
cat <<EOF
Keybindings:
TAB Toggle selection.
ctrl-v 'cat' the unit in the preview window.
ctrl-s Select states to match. Selection is reset.
ctrl-r Run daemon-reload. Selection is reset.
ctrl-p History previous.
ctrl-n History next.
? Show keybindings.
EOF
}
_sysz_help() {
cat >&2 <<EOF
A utility for using systemctl interactively via fzf.
Usage: $PROG [OPTS...] [CMD] [-- ARGS...]
sudo is invoked automatically, if necessary.
If only one unit is chosen, available commands will be presented
based on the state of the unit (e.g. "start" only shows if unit is "active").
OPTS:
-u, --user Only show --user units
--sys, --system Only show --system units
-s STATE, --state STATE Only show units in STATE (repeatable)
-V, --verbose Print the systemctl command
-v, --version Print the version
-h, --help Print this message
If no options are given, both system and user units are shown.
CMD:
start systemctl start <unit>
stop systemctl stop <unit>
r, restart systemctl restart <unit>
s, stat, status systemctl status <unit>
ed, edit systemctl edit <unit>
reload systemctl reload <unit>
en, enable systemctl enable <unit>
d, dis, disable systemctl disable <unit>
c, cat systemctl cat <unit>
If no command is given, one or more can be chosen interactively.
ARGS are passed to the systemctl command for each selected unit.
$(_sysz_keys)
History:
$PROG is stored in $SYSZ_HISTORY
This can be changed with the environment variable: SYSZ_HISTORY
Some units are colored based on state:
green active
red failed
yellow not-found
Examples:
$PROG -u User units
$PROG --sys -s active Active system units
$PROG --user --state failed Failed user units
Examples with commands:
$PROG start Start a unit
$PROG --sys s Get the status of system units
$PROG --user edit Edit user units
$PROG s -- -n100 Show status with 100 log lines
$PROG --sys -s active stop Stop an active system unit
$PROG -u --state failed r Restart failed user units
EOF
exit 0
}
_sysz_run() {
[[ $VERBOSE = true ]] && echo '>' "$@" >&2
eval "$@" || return $?
}
_sysz_systemctl() {
if [[ $EUID -ne 0 && $1 = --system ]]; then
# only run sudo if we aren't root and it's a system unit
_sysz_run sudo systemctl "$@"
else
_sysz_run systemctl "$@"
fi
}
_sysz_journalctl() {
# remove --system from journalctl
if [[ $1 = --system ]]; then
shift
if [[ $EUID -ne 0 ]]; then
# only run sudo if we aren't root and it's a system unit
_sysz_run sudo journalctl "$@"
return
fi
fi
# remove --user flag from journalctl
# --user and --system don't work the same on journalctl
# as they do for systemctl
if [[ $1 = --user ]]; then
shift
fi
_sysz_run journalctl "$@"
}
_sysz_manager() {
case ${1%% *} in
'[user]')
echo --user
;;
'[system]')
echo --system
;;
*)
echo "ERROR: Unknown manager: $1" >&2
exit 1
;;
esac
}
_fzf_cat() {
local MANAGER
MANAGER=$(_sysz_manager "$1")
local UNIT
UNIT=${1##* }
SYSTEMD_COLORS=1 systemctl "$MANAGER" cat -- "$UNIT"
}
_fzf_preview() {
local MANAGER
MANAGER=$(_sysz_manager "$1")
local UNIT
UNIT=${1##* }
if [[ $UNIT = *@.* ]]; then
_fzf_cat "$@"
else
SYSTEMD_COLORS=1 systemctl "$MANAGER" status --no-pager -- "$UNIT"
fi
exit 0
}
_sysz_show() {
local manager
manager=$(_sysz_manager "$1")
local unit
unit=${1##* }
_sysz_systemctl "$manager" show "$unit" -p "$2" --value
}
_sysz_sort() {
local str
local mgr
local unit
local n
while IFS= read -r str; do
mgr=${str%% *}
unit_colored=${str##* }
unit=${unit_colored//$'\e'[\[(]*([0-9;])[@-n]/}
if [[ $unit =~ \.service$ ]]; then
n=0
[[ $mgr = "[system]" ]] && n=1
elif [[ $unit =~ \.timer$ ]]; then
n=2
[[ $mgr = "[system]" ]] && n=3
elif [[ $unit =~ \.socket$ ]]; then
n=4
[[ $mgr = "[system]" ]] && n=5
elif [[ $mgr = "[user]" ]]; then
n=6
else
# then the rest based on file extension
n=7
fi
type=${unit##*.}
unit_undashed=${unit//-/}
echo "$n$type$unit_undashed $mgr $unit_colored"
done | sort -bifu | cut -d' ' -f2-
}
_sysz_list() {
local args
declare -a args
args=(
--all
--no-legend
--full
--plain
--no-pager
"${STATES[@]}"
"$@"
)
(
systemctl list-units "${args[@]}"
systemctl list-unit-files "${args[@]}"
) | sort -u -t ' ' -k1,1 |
while read -r line; do
unit=${line%% *}
if [[ $line = *" active "* ]]; then
printf '\033[0;32m%s\033[0m\n' "$unit" # green
elif [[ $line = *" failed "* ]]; then
printf '\033[0;31m%s\033[0m\n' "$unit" # red
elif [[ $line = *" not-found "* ]]; then
printf '\033[1;33m%s\033[0m\n' "$unit" # red
else
echo "$unit"
fi
done
}
_sysz_list_units() {
for MANAGER in "${MANAGERS[@]}"; do
_sysz_list "--$MANAGER" | sed -e "s/^/[$MANAGER] /"
done | _sysz_sort
}
# main
# check fzf version
MIN_FZF=0.27.1
if [[ "$(printf '%s\n' "$MIN_FZF" "$(fzf --version | cut -d' ' -f1)" | sort -V | head -n1)" != "$MIN_FZF" ]]; then
echo "ERROR: fzf >= $MIN_FZF required" >&2
echo "https://github.com/junegunn/fzf#upgrading-fzf" >&2
exit 1
fi
# root doesn't have user units
if [[ $EUID -eq 0 ]]; then
MANAGERS=(system)
else
MANAGERS=(user system)
fi
declare -a STATES
while [[ -n $1 ]]; do
case $1 in
-u | --user)
MANAGERS=(user)
shift
;;
--sys | --system)
MANAGERS=(system)
shift
;;
-s | --state)
STATES+=("--state=$2")
shift
shift
;;
--state=*)
STATES+=("$1")
shift
;;
-v | --version)
echo "$PROG" $SYSZ_VERSION
exit 0
;;
-V | --verbose)
VERBOSE=true
shift
;;
-h | --help)
_sysz_help
;;
*)
break
;;
esac
done
for STATE in "${STATES[@]}"; do
STATE="${STATE##*=}"
if [[ -n $STATE ]] && ! systemctl --state=help | grep -q "^${STATE}$"; then
echo "ERROR: Invalid state: $STATE" >&2
exit 1
fi
done
declare CMD
declare -a ARGS
while [[ -n $1 ]]; do
case $1 in
_fzf_preview)
shift
_fzf_preview "$@"
;;
_fzf_cat)
shift
_fzf_cat "$@"
;;
h | help)
_sysz_help
;;
# Handle short names
re)
CMD=restart
;;
s)
CMD=status
;;
ed)
CMD=edit
;;
en)
CMD=enable
;;
d<
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