(diff.info.gz) Backups
Info Catalog
(diff.info.gz) patch Directories
(diff.info.gz) Merging with patch
(diff.info.gz) Backup Names
Backup Files
============
Normally, `patch' creates a backup file if the patch does not
exactly match the original input file, because in that case the
original data might not be recovered if you undo the patch with `patch
-R' ( Reversed Patches). However, when conforming to POSIX,
`patch' does not create backup files by default. patch and
POSIX.
The `-b' or `--backup' option causes `patch' to make a backup file
regardless of whether the patch matches the original input. The
`--backup-if-mismatch' option causes `patch' to create backup files for
mismatches files; this is the default when not conforming to POSIX. The
`--no-backup-if-mismatch' option causes `patch' to not create backup
files, even for mismatched patches; this is the default when conforming
to POSIX.
When backing up a file that does not exist, an empty, unreadable
backup file is created as a placeholder to represent the nonexistent
file.
Info Catalog
(diff.info.gz) patch Directories
(diff.info.gz) Merging with patch
(diff.info.gz) Backup Names
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