Need help with perl script with a while loop reading file Post: 302802659

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git-cherry

GIT-CHERRY(1)                                                       Git Manual                                                       GIT-CHERRY(1)

NAME

       git-cherry - Find commits yet to be applied to upstream

SYNOPSIS

       git cherry [-v] [<upstream> [<head> [<limit>]]]

DESCRIPTION

       Determine whether there are commits in <head>..<upstream> that are equivalent to those in the range <limit>..<head>.

       The equivalence test is based on the diff, after removing whitespace and line numbers. git-cherry therefore detects when commits have been
       "copied" by means of git-cherry-pick(1), git-am(1) or git-rebase(1).

       Outputs the SHA1 of every commit in <limit>..<head>, prefixed with - for commits that have an equivalent in <upstream>, and + for commits
       that do not.

OPTIONS

       -v
           Show the commit subjects next to the SHA1s.

       <upstream>
           Upstream branch to search for equivalent commits. Defaults to the upstream branch of HEAD.

       <head>
           Working branch; defaults to HEAD.

       <limit>
           Do not report commits up to (and including) limit.

EXAMPLES

   Patch workflows
       git-cherry is frequently used in patch-based workflows (see gitworkflows(7)) to determine if a series of patches has been applied by the
       upstream maintainer. In such a workflow you might create and send a topic branch like this:

           $ git checkout -b topic origin/master
           # work and create some commits
           $ git format-patch origin/master
           $ git send-email ... 00*

       Later, you can see whether your changes have been applied by saying (still on topic):

           $ git fetch  # update your notion of origin/master
           $ git cherry -v

   Concrete example
       In a situation where topic consisted of three commits, and the maintainer applied two of them, the situation might look like:

           $ git log --graph --oneline --decorate --boundary origin/master...topic
           * 7654321 (origin/master) upstream tip commit
           [... snip some other commits ...]
           * cccc111 cherry-pick of C
           * aaaa111 cherry-pick of A
           [... snip a lot more that has happened ...]
           | * cccc000 (topic) commit C
           | * bbbb000 commit B
           | * aaaa000 commit A
           |/
           o 1234567 branch point

       In such cases, git-cherry shows a concise summary of what has yet to be applied:

           $ git cherry origin/master topic
           - cccc000... commit C
           + bbbb000... commit B
           - aaaa000... commit A

       Here, we see that the commits A and C (marked with -) can be dropped from your topic branch when you rebase it on top of origin/master,
       while the commit B (marked with +) still needs to be kept so that it will be sent to be applied to origin/master.

   Using a limit
       The optional <limit> is useful in cases where your topic is based on other work that is not in upstream. Expanding on the previous example,
       this might look like:

           $ git log --graph --oneline --decorate --boundary origin/master...topic
           * 7654321 (origin/master) upstream tip commit
           [... snip some other commits ...]
           * cccc111 cherry-pick of C
           * aaaa111 cherry-pick of A
           [... snip a lot more that has happened ...]
           | * cccc000 (topic) commit C
           | * bbbb000 commit B
           | * aaaa000 commit A
           | * 0000fff (base) unpublished stuff F
           [... snip ...]
           | * 0000aaa unpublished stuff A
           |/
           o 1234567 merge-base between upstream and topic

       By specifying base as the limit, you can avoid listing commits between base and topic:

           $ git cherry origin/master topic base
           - cccc000... commit C
           + bbbb000... commit B
           - aaaa000... commit A

SEE ALSO

       git-patch-id(1)

GIT

       Part of the git(1) suite

Git 2.17.1                                                          10/05/2018                                                       GIT-CHERRY(1)

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Reading each line of a file in perl script

Discussion started by: Harikrishna

2. Shell Programming and Scripting

perl how to exit a while loop and quit reading the input file

Discussion started by: subhap

3. AIX

How to pause a while loop while reading from a file

Discussion started by: sekhar gajjala

4. Shell Programming and Scripting

Help with perl script while reading a file

Discussion started by: ramakanth_burra