[TBD]useful perforce p4 info

p4 changes -m1 ...#have -> This command shows the current changelist number to which I have synced

p4 sync ...@549683 -> To sync to specific changelist number

p4 integrate //depot/branch1/...@=523456 //depot/main/branch2/... -> Integrate changes

How to move workspace from one host to another

Execute p4 client command and in the UI, replace hostname. You can get hostname detail of current machine by running p4 info command.

Useful link:http://answers.perforce.com/articles/KB/3412

How to list all shelved changes of across my workspaces

This command will list all the shelved changes per user.

p4 changes -u <USERNAME> -s shelved

Useful link: https://stackoverflow.com/questions/9578881/how-to-list-my-shelved-changes-in-perforce

How to protect docker container from accidental removal

you can pass --pin to docker run so that you can't docker rm that container without also using --force

docker run -d -v /myData --pin --name my_data tianon/true docker stop my_data # This isn't running, but for showcasing this, stop it docker rm my_data # this will fail even though it's not running docker rm --force my_data # this will work

Useful link: https://github.com/moby/moby/pull/7523

Tips

Method to know latest changelist number synced to my workspace

To know latest changelist number

root@8935a9c39976:/ws1/rs_120/usr.src# p4 changes -m1 "./...#have"

Change 685564 on 2018/06/06 by build@sjcpbld84-125 'Label oban_58_8 Not-Reviewed: B'

root@8935a9c39976:/ws1/rs_120/usr.src#

Useful link: https://stackoverflow.com/questions/47007/determining-the-last-changelist-synced-to-in-perforce

Method to delete multiple pending changes at one shot

Use bash options grep,awk,sed and run the change numbers in for loop

Remove multiple changes at one shot

root@ubuntu:~/ws1# p4 changes | grep deepakk_ubuntu_102_141 | awk '{print $2}' | xargs | sed 's/ /,/g'

647168,632626,632037,627000,626115,622484,620424,618712

root@ubuntu:~/ws1# for i in {647168,632626,632037,627000,626115,622484,620424,618712}; do p4 change -d $i; done

Change 647168 is already committed.

Change 632626 is already committed.

Change 632037 has shelved files associated with it and can't be deleted.

Change 627000 deleted.

Change 626115 has shelved files associated with it and can't be deleted.

Change 622484 has shelved files associated with it and can't be deleted.

Change 620424 deleted.

Change 618712 deleted.

root@ubuntu:~/ws1#

Useful link: https://www.cyberciti.biz/faq/bash-for-loop/

Method to delete multiple shelved changes at one go

Use bash options grep,awk,sed and run the change numbers in for loop

Delete multiple shelve entries

root@ubuntu:~/ws1# p4 changes -u deepakk -s shelved | grep deepakk_ubuntu_102_141 | awk '{print $2}' | xargs | sed 's/ /,/g'

632037,626115,622484

root@ubuntu:~/ws1# for i in {632037,626115,622484}

> do

> p4 shelve -d -c $i

> done

Shelved change 632037 deleted.

Shelved change 626115 deleted.

Shelved change 622484 deleted.

Method to revert all files in a pending changelist

Example: root@6f46e0830594:~/ws1/rs_121_48_triton/usr.src#p4 revert -c 706017 ...

Reference: https://stackoverflow.com/questions/23550041/how-can-i-revert-all-open-files-in-perforce

Method to resolve 'Can't clobber Writable file' error

When you try to sync a file, perforce expects your files in workspace will have read-only permissions. But if a file is not checkout,(by p4 edit)but has write permission then it will throw the above error. Changing the file to read-only and syncing again will solve the issue. or try removing the workspace and get the latest revision again.

Reference: https://stackoverflow.com/questions/48315647/how-to-fix-perforce-error-cant-clobber-writable-file-or-perforce-error-messag

Method to unshelve changes from a branch to internal branch

Steps:

• Create a branch spec from the source branch to destination branch

• Use 'p4 unshelve -s <change number> -b <branchspec>'

Example:

p4 branch deepakk_test_kamet_49_8_triton will create a branch with below example spec

Then use 'p4 unshelve -s 675541 -b deepakk_test_kamet_49_8_triton' for merging the change

Useful link: http://p4kb.force.com/articles/KB/3372

Method to label a codebase

Steps

• Create label (Refer below example)

  • • use p4 label <label_name>

• Tag codebase with the label

  • p4 tag -l CIC_LABEL_2_703989 //depot/main/rs_121_48_triton/...@703989

  • Verify label is correctly put

    • p4 sync ...@CIC_LABEL_2_703989

Useful link: https://www.perforce.com/perforce/r15.1/manuals/p4guide/chapter.labels.html

Method to undo committed change

Use 'p4 undo @<CL# for undoing>'

For example, p4 undo @12345

Useful link: https://serverfault.com/questions/424242/how-do-i-unsubmit-a-previously-committed-perforce-change-list

Reference