1#   This program is free software: you can redistribute it and/or modify
2#   it under the terms of the GNU General Public License as published by
3#   the Free Software Foundation, either version 3 of the License, or
4#   (at your option) any later version.
5#
6#   This program is distributed in the hope that it will be useful,
7#   but WITHOUT ANY WARRANTY; without even the implied warranty of
8#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
9#   GNU General Public License for more details.
10#
11#   You should have received a copy of the GNU General Public License
12#   along with this program.  If not, see <http://www.gnu.org/licenses/>.
13#
14# force single-byte versions of these functions
15
16export LANG=C
17
18# remove shortest trailing match
19x=file.c
20recho ${x%.c}.o
21
22# remove longest trailing match
23x=posix/src/std
24recho ${x%%/*}
25
26# remove shortest leading pattern
27x=$HOME/src/cmd
28recho ${x#$HOME}
29
30# remove longest leading pattern
31x=/one/two/three
32recho ${x##*/}
33
34# and no match thrown in for good measure
35recho ${x#nomatch}
36
37foo=abcdefg
38
39# fail
40echo ${foo%ab}
41echo ${foo%def}
42
43echo ${foo#fg}
44echo ${foo#def}
45
46# succeed
47echo ${foo#ab}
48echo ${foo#def}
49
50echo ${foo%fg}
51echo ${foo%def}
52