Install cvsutils by entering the following commands in the terminal:
sudo apt update sudo apt install cvsutils
CVS utilities for use in working directories
Several utilities which are used to facilitate working with the files in the working directory of a developer using CVS. . The utilities included in this package are: . + cvsu: Offline "cvs update" simulator. Lists the files found in the current directory (or in the directories which you specify). + cvsco: "Cruel checkout". Removes results of compilation and discards local changes. Deletes all the files except listed unmodified ones and checks out everything which seems to be missing. + cvsdiscard: Discards local changes but keeps results of compilation. Works like "cvsco", but only deletes files which are likely to cause merge conflicts. + cvspurge: CVS-based "make maintainer-clean". Removes results of compilation but keeps local changes intact. Removes unknown files, but keeps changes in files known to CVS. + cvstrim: Removes files and directories unknown to CVS. + cvschroot: Makes it possible to change CVS/Root in all subdirectories to the given value. + cvsdo: Simulates some of the CVS commands (currently add, remove and diff) without any access to the CVS server. + cvsnotag: Reports untagged files.