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15. Invoking patch
Normally patch
is invoked like this:
patch <patchfile |
The full format for invoking patch
is:
patch options… [origfile [patchfile]] |
You can also specify where to read the patch from with the ‘-i
patchfile’ or ‘--input=patchfile’ option.
If you do not specify patchfile, or if patchfile is
‘-’, patch
reads the patch (that is, the diff
output)
from the standard input.
If you do not specify an input file on the command line, patch
tries to intuit from the leading text (any text in the patch
that comes before the diff
output) which file to edit.
See section Multiple Patches in a File.
By default, patch
replaces the original input file with the
patched version, possibly after renaming the original file into a
backup file (see section Backup File Names, for a description of how
patch
names backup files). You can also specify where to
put the output with the ‘-o file’ or
‘--output=file’ option; however, do not use this option
if file is one of the input files.
15.1 Options to patch | Summary table of options to patch .
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