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| author | Jean Delvare <jdelvare@suse.de> | 2012-02-01 18:08:49 +0100 |
|---|---|---|
| committer | Jean Delvare <jdelvare@suse.de> | 2012-02-01 18:08:49 +0100 |
| commit | 7d91ce9ddb0b48b97f133335f336780618b9bc05 (patch) | |
| tree | ece689c8dd86f84bec78f633a9f8a70a390fa02f | |
| parent | 12c0bdf9e743195de8e16b4af4cca2b7cc8a78e0 (diff) | |
| download | quilt-7d91ce9ddb0b48b97f133335f336780618b9bc05.tar.gz | |
backup-files: Clarify command line options
Misc cleanups:
* Add my copyright and simplify the reference to the initial version.
* Drop the program description, as it is redundant with the usage
function.
* Clarify the usage message, to make it clear what each option is
doing, and which ones are compatible with each other.
* Let the script complain if no action is given, as this has to be a
user or developer error.
Signed-off-by: Jean Delvare <jdelvare@suse.de>
Reviewed-by: Raphael Hertzog <hertzog@debian.org>
| -rw-r--r-- | quilt/scripts/backup-files.in | 38 |
1 files changed, 23 insertions, 15 deletions
diff --git a/quilt/scripts/backup-files.in b/quilt/scripts/backup-files.in index 487a155..e989e5c 100644 --- a/quilt/scripts/backup-files.in +++ b/quilt/scripts/backup-files.in @@ -2,11 +2,9 @@ set -e -# File: backup-files.sh - # Copyright (C) 2006 Steve Langasek <vorlon@debian.org> -# portions Copyright (C) 2003, 2004, 2005, 2006 Andreas Gruenbacher -# <agruen@suse.de>, SuSE Labs +# Copyright (C) 2011 Jean Delvare <jdelvare@suse.de> +# Loosely based on C implementation by Andreas Gruenbacher <agruen@suse.de> # 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 @@ -22,26 +20,35 @@ set -e # Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, # MA 02110-1301, USA. - -# Create backup files of a list of files similar to GNU patch. A path -# name prefix for the backup files must be specified with the -B option. - usage () { - echo "Usage: $0 -B prefix [-s] [-k] [-t] [-L] [-b|-r|-c|-x] {-f {file|-}|-|file ...} + echo "Usage: $0 -B prefix {-b|-r|-c|-x|-L} [-s] [-k] [-t] [-L] {-f {file|-}|-|file ...} Create or restore backup copies of a list of files. - -b Create backup + Mandatory parameters: + -B Path name prefix for backup files + + Action parameters: + -b Create backup (preserve links) -r Restore the backup -c Create simple copy -x Remove backup files and empty parent directories - -k When doing a restore, keep the backup files - -B Path name prefix for backup files + -L Ensure that source files have a link count of 1 + + Common options: -s Silent operation; only print error messages - -f Read the filenames to process from file (- = standard input) + + Restore options: + -k Keep backup files -t Touch original files after restore (update their mtimes) + -L Ensure that source files have a link count of 1 + + Backup options: + -L Ensure that source files have a link count of 1 - -L Ensure that when finished, the source file has a link count of 1 + File list parameters: + -f Read the filenames to process from file (- = standard input) + - Read the filenames to process from backup " } @@ -338,7 +345,8 @@ if [ -z "$OPT_WHAT" ]; then if [ -n "$OPT_NOLINKS" ]; then OPT_WHAT=noop_nolinks else - exit 0 + echo "Please specify an action" >&2 + exit 1 fi fi |