File: dpigs

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#!/bin/sh

# dpigs - Show which installed packages occupy the most space

# Copyright (C) 2001,2002 Matt Zimmerman <mdz@debian.org>

# 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 2, 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, write to the Free Software
# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
# 02111-1307, USA.
#

set -e

# set locale for sorting
LC_NUMERIC=C
export LC_NUMERIC

Usage() {
    echo "Usage: dpigs [options]"
    echo
    echo "Options:"
    echo "  -n, --lines=N"
    echo "    Display the N largest packages on the system (default 10)."
    echo "  -s, --status=status-file"
    echo "    Use status-file instead of the default dpkg status file."
    echo "  -S, --source"
    echo "    Display the largest source packages of binary packages installed"
    echo "    on the system."
    echo "  -H, --human-readable"
    echo "    Display package sizes in human-readable format (like ls -lh or du -h)"
    echo "  -h, --help"
    echo "    Display this message."
}

LINES=10
# grep-status provides a default
STATUS=
# Default: provide binary package information
SOURCE=0
# Default: display kilobytes
HUMAN=0

OPTS=$(getopt -o n:s:ShH --long lines:,status:,source,help,human-readable -- "$@")
eval set -- "$OPTS"

while true; do
    case "$1" in
        -n|--lines)
            LINES="$2"
            shift 2
            ;;
        -s|--status)
            STATUS="$2"
            shift 2
            ;;
        -S|--source)
            SOURCE=1
            shift 1
            ;;
        -H|--human-readable)
            HUMAN=1
            shift 1
            ;;
        -h|--help)
            Usage
            exit 0
            ;;
        --)
            shift
            break
            ;;
        *)
            Usage
            exit 1
            ;;
    esac
done

if [ $SOURCE -eq 0 ] ; then
    grep-status -nsInstalled-size,Package -F Status ' installed' $STATUS \
        | perl -p00l12 -e 's/\n/ /' \
        | sort -rn \
        | head --lines=$LINES
else
# Order by source package
    grep-status -nsInstalled-size,Source:Package -F Status ' installed' $STATUS \
        | perl -n00a -e '$s{$F[1]}+=$F[0]; END { for(keys %s) {print"$s{$_} $_\n"} }' \
        | sort -rn \
        | head --lines=$LINES
# Alternatively use this:
# It adds details of which binary packages are
# involved (but not how big they are), with % standing in for the source
#grep-status -nsInstalled-size,Package,Source:Package -F Status ' installed' \
#    $STATUS \
#    | perl -n00al12 -e '$s{$F[2]} += $F[0];
#        $F[1] =~ s/\Q$F[2]\E/%/; $b{$F[2]}{$F[1]} = 1;
#            END {$, = " "; for(keys %s) {print "$s{$_} $_:", sort keys %{$b{$_}}} }' \
#            | sort -rn \
#            | head --lines=$LINES
fi | if [ $HUMAN -eq 1 ]; then
    awk '{ if ($1 > 1024*1024*1024)
              printf("% 6.1fT %s\n", $1/(1024*1024*1024), $2);
           else if ($1 > 1024*1024)
              printf("% 6.1fG %s\n", $1/(1024*1024), $2);
           else if ($1 > 1024)
              printf("% 6.1fM %s\n", $1/1024, $2);
           else
              printf("% 6.1ik %s\n", $1, $2); }'
else
    cat
fi