This works on anything that uses a simple lock like this cabinets closets desk drawers.
How to pick a door lock with a nail file.
Use a nail clipper file with a curved tip as your lock pick.
How to pick a file cabinet lock.
To use the filing tool locate a pair of nail clippers that has a tiny nail filing tool.
To pick a file cabinet lock straighten out a paperclip and leave one of the ends curved.
Picking a filing cabinet lock.
When you are ready to pick the lock slide the file out from the base of the nail clippers.
Hold the paperclip vertically and insert the curved end into the keyhole which will push down on the pins inside.