dmenu-run-recent

#!/bin/bash
#
# dmenu-run-recent: Sort dmenu items by usage. Append ";" to launch the app in
#                   terminal.
#
# Based on: b3n <http://bbs.archlinux.org/viewtopic.php?pid=529204#p529204>
#
# Copyright 2009, 2010 Tom Vincent <http://www.tlvince.com/>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.

# Environment:
CACHE="${XDG_CACHE_HOME:-"$HOME/.cache"}"
[[ -d "$CACHE/dmenu" ]] || mkdir -p "$CACHE/dmenu"

# Global variables:
TERM="urxvtc -e"
CACHE+="/dmenu/dmenu-cache-recent"
. "$HOME/.dmenurc"

touch $CACHE
MOST_USED=$(sort $CACHE | uniq -c | sort -r | colrm 1 8)
RUN=$((echo "$MOST_USED"; dmenu-path | grep -vxF "$MOST_USED") | $DMENU) &&
(echo $RUN; head -n 99 $CACHE) > $CACHE.$$ &&
mv $CACHE.$$ $CACHE

case $RUN in
    *\;) exec $(echo $TERM ${RUN/;/});;
    *)   exec $RUN;;
esac