Added some help messages.
[people/mcb30/busybox.git] / scripts / undeb
1 #!/bin/sh
2 #
3 # This should work with the GNU version of tar and gzip!
4 # This should work with the bash or ash shell!
5 # Requires the programs (ar, tar, gzip, and the pager more or less).
6 #
7 usage() {
8 echo "Usage: undeb -c package.deb            <Print control file info>"
9 echo "       undeb -l package.deb            <List contents of deb package>"
10 echo "       undeb -x package.deb /foo/boo   <Extract deb package to this directory,"
11 echo "                                        put . for current directory>"  
12 exit
13 }
14
15 deb=$2
16  
17 exist() {
18 if [ "$deb" = "" ]; then
19 usage
20 elif [ ! -s "$deb" ]; then
21 echo "Can't find $deb!"
22 exit
23 fi
24 }
25
26 if [ "$1" = "" ]; then
27 usage
28 elif [ "$1" = "-l" ]; then
29 exist
30 type more >/dev/null 2>&1 && pager=more
31 type less >/dev/null 2>&1 && pager=less
32 [ "$pager" = "" ] && echo "No pager found!" && exit
33 (ar -p $deb control.tar.gz | tar -xzO *control ; echo -e "\nPress enter to scroll, q to Quit!\n" ; ar -p $deb data.tar.gz | tar -tzv) | $pager 
34 exit
35 elif [ "$1" = "-c" ]; then
36 exist
37 ar -p $deb control.tar.gz | tar -xzO *control  
38 exit
39 elif [ "$1" = "-x" ]; then
40 exist
41 if [ "$3" = "" ]; then
42 usage
43 elif [ ! -d "$3" ]; then
44 echo "No such directory $3!"
45 exit
46 fi
47 ar -p $deb data.tar.gz | tar -xzvpf - -C $3 || exit 
48 echo
49 echo "Extracted $deb to $3!"
50 exit
51 else
52 usage
53 fi