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shape_patch(1) [xfree86 man page]

SHAPE_PATCH(1)						      General Commands Manual						    SHAPE_PATCH(1)

shape_patch - shapeTools RMS generate patch file SYNOPSIS
shape patch OLDRELEASE=<name1> NEWRELEASE=<name2> [PATCHFILE=<filename>] DESCRIPTION
Shape patch generates a patch file for updating $(OLDRELEASE) to $(NEWRELEASE). Both releases are identified by release names associated with the macros OLD-/NEWRELEASE on the command line. Valid release names are those generated by any of the shape_RMS (pre-)release building procedures (see shape_releas(1)). Performing 'vl -all' with the release identification file as argument usually gives a good overview of existing release names. Patch generation happens recursively over all subsystems being part of the current node. Hence, triggering shape patch from the top node of the central source repository creates a patch file for the whole system. The output of shape patch is stored in a file named <name1>+2+<name2>.pat. When the PATCHFILE macro is set on the command line, $(PATCH- FILE) is taken as output file name instead. Defining PATCHFILE=- on the command line causes the patch to be written to standard output. Note: For patches invoking multiple subsystems, $(PATCHFILE) should be set to an absolute pathname. If not, the patch generation procedure will leave an equally named patch file for each visited subsystem. The patch is constructed using the vdiff(1) command and can be applied to any installation of $(OLDRELEASE) by invoking patch(1). INCONVENIENCES
On System V machines, the generated patch file name will almost certainly exceed the 14 characters filename length limit. SEE ALSO
shape_releas(1), vdiff(1), patch(1) FILES
<name1>+2+<name2>.pat 2.10.119 SHAPE_PATCH(1)

Check Out this Related Man Page

GIT-PATCH-ID(1) 						    Git Manual							   GIT-PATCH-ID(1)

git-patch-id - Compute unique ID for a patch SYNOPSIS
git patch-id [--stable | --unstable] DESCRIPTION
Read a patch from the standard input and compute the patch ID for it. A "patch ID" is nothing but a sum of SHA-1 of the file diffs associated with a patch, with whitespace and line numbers ignored. As such, it's "reasonably stable", but at the same time also reasonably unique, i.e., two patches that have the same "patch ID" are almost guaranteed to be the same thing. IOW, you can use this thing to look for likely duplicate commits. When dealing with git diff-tree output, it takes advantage of the fact that the patch is prefixed with the object name of the commit, and outputs two 40-byte hexadecimal strings. The first string is the patch ID, and the second string is the commit ID. This can be used to make a mapping from patch ID to commit ID. OPTIONS
--stable Use a "stable" sum of hashes as the patch ID. With this option: o Reordering file diffs that make up a patch does not affect the ID. In particular, two patches produced by comparing the same two trees with two different settings for "-O<orderfile>" result in the same patch ID signature, thereby allowing the computed result to be used as a key to index some meta-information about the change between the two trees; o Result is different from the value produced by git 1.9 and older or produced when an "unstable" hash (see --unstable below) is configured - even when used on a diff output taken without any use of "-O<orderfile>", thereby making existing databases storing such "unstable" or historical patch-ids unusable. This is the default if patchid.stable is set to true. --unstable Use an "unstable" hash as the patch ID. With this option, the result produced is compatible with the patch-id value produced by git 1.9 and older. Users with pre-existing databases storing patch-ids produced by git 1.9 and older (who do not deal with reordered patches) may want to use this option. This is the default. GIT
Part of the git(1) suite Git 2.17.1 10/05/2018 GIT-PATCH-ID(1)
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