P4 Revert Guide

Old, but Reliable

To revert someone else's files, you'd ideally know the $USER, $CLIENT, $CHANGE (optionally), and $FILESPEC.

• $USER, the username as indicated by perforce
• $CLIENT, also known as the workspace
• $CHANGE, the number of the changelist (or default)
• $FILESPEC, the file specification used to determine which or what pattern of files to apply this to

# Find the workspace host
p4 client -o $CLIENT

# Impersonate the user
p4 login $USER

# Revert the files as that user, on that workspace, on that machine
p4 -u $USER -c $CLIENT -H $HOST revert $FILESPEC

Source: How to delete a pending changelist in Perforce from an old workspace and offline machine (by admin access)

2015+ Server

If someone else has erroneously checked out a file (especially one with an exclusive-open mode) and has left for vacation, you can revert this on the CLI if you have administrative powers.

# Revert files on a given client
p4 revert -C $CLIENT $FILESPEC

# Optionally include a specific changelist to modify
p4 revert -C $CLIENT -c $CHANGELIST $FILESPEC

Source: Reverting Another User's Files