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pacman/contrib/pacsysclean.sh.in
Jason St. John a15fd48016 Improve --help switch output for pacman contrib and pacman scripts
Unify the formatting of the --help switch for pacman utils, if it exists.
All of the pacman utils will now output help text using the following
format:

  util-name (pacman) v<pacman version>

  one line description of util's purpose

  Usage: util-name [options]

    -b, --bar      whatever --bar does
    -f, --foo      whatever --foo does
    -h, --help     display this help message

Reported-by: Karol Błażewicz <karol.blazewicz at gmail.com>
Signed-off-by: Jason St. John <jstjohn@purdue.edu>
2013-11-15 11:02:27 +10:00

67 lines
1.5 KiB
Bash

#!/bin/bash
# pacsysclean - Sort installed packages by increasing installed size. Useful for system clean-up.
declare -r myname='pacsysclean'
declare -r myver='@PACKAGE_VERSION@'
PACMAN_OPTS=
usage() {
echo "${myname} (pacman) v${myver}"
echo
echo "Sort installed packages by increasing installed size. Useful for"
echo "system clean-up."
echo
echo "Usage: ${myname} [options]"
echo
echo "Options:"
echo " -o <options> Specify custom pacman query options (e.g., dt)"
echo " -h, --help Show this help message and exit"
}
version() {
printf "%s %s\n" "$myname" "$myver"
echo 'Copyright (C) 2011 Eric Bélanger <snowmaniscool@gmail.com>'
}
if [ -n "$1" ]; then
case "$1" in
-o) PACMAN_OPTS="${2}" ;;
-h|--help) usage; exit 0 ;;
-V|--version) version; exit 0 ;;
*) usage; exit 1 ;;
esac
fi
IFS=$'\n'
name="^Name.*: (.*)$"
size="^Installed Size.*: (.*) KiB$"
[[ $PACMAN_OPTS && $PACMAN_OPTS != -* ]] && PACMAN_OPTS="-$PACMAN_OPTS"
for line in $(LANG=C pacman -Qi $PACMAN_OPTS); do
if [[ $line =~ $name ]]; then
printf "%s\t" ${BASH_REMATCH[1]}
elif [[ $line =~ $size ]]; then
printf "%s\n" ${BASH_REMATCH[1]}
fi
done | sort -g -k2 | awk '
BEGIN {
split("KiB MiB GiB TiB PiB EiB ZiB YiB", suffix)
}
function format_size(size) {
count = 1
while (size + 0 > 1024) {
size /= 1024
count++
}
sizestr = sprintf("%.2f %s", size, suffix[count])
return sizestr
}
{
printf("%s\t%s\n", format_size($2), $1);
}'
# vim: set ts=2 sw=2 noet: