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#!/bin/sh
# list installed pacman packages in chronological order.
# example usage: $ paclast -tc | head
main() {
opts="$(getopt -otcph -- "$@")" && eval set -- "$opts" || help
r= ; c= ; p=
while true; do case "$1" in
-t) t='|relative'; shift ;;
-c) c='|colorize'; shift ;;
-p) p="|${PAGER:-less}"; shift ;;
--) break ;;
*) help ;;
esac; done
eval list $t $c $p
}
list() {
list_installed | get_explicitly_installed | sort -rsk1,1 |
awk ' BEGIN{FS=OFS=""}
{$1=$18=$19=$20=$21=$22=$23=$24=$25=$26="";$12=$27=" "; print $0}'
}
# print a list of all installed packages and their first install date.
list_installed() {
awk '/installed/ {print $1" "$4}' /var/log/pacman.log | tac | sort -uk2,2
}
# filter only explicitly installed packages through stdin
get_explicitly_installed() {
awkcmd="$(
pacman -Qqe | while IFS= read -r expkg; do
printf '$2=="'$expkg'" || '
done | rev | cut -c5- | rev
)"
awk "$awkcmd"
}
# insert a relative date column in every line.
relative() {
while read -r line; do
pkg="$( echo "$line" | cut -d' ' -f3)"
time="$(echo "$line" | cut -d' ' -f2)"
date="$(echo "$line" | cut -d' ' -f1)"
days_ago="$(get_days_ago "$date")"
echo "$date $time ($days_ago days ago) $pkg"
done
}
# print how many days ago a given date is.
# the digit 2 after $given_date indicates the time 02:00:00
# it's there because if it's omitted, date(1) assumes the time
# to be 00:00:00, and such time might be invalid because of daylight saving.
get_days_ago() {
given_date="$1"
echo $(( ($(date +%s) - $(date -d "$given_date 2" +%s)) / (86400) ))
}
# colorize the output
colorize() {
while read -r line; do # add nice colors to output.
printf '\033[1;32m%s\n' "$line"
read -r line
printf '\033[1;36m%s\n' "$line"
done
# revert terminal's text color back to normal.
printf '\033[0m'
}
help() {
cat << 'eof'
list installed pacman packages in chronological order.
Usage: paclast [-tcp]
Options:
-t add an 'x days ago' column to output.
-c colorize output.
-p show output in pager.
eof
exit
}
main "$@"
exit
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