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ci(1) and co(1) are the commands used to check
files in and out of their RCS archives. The ci(1) command
may also be used to a check a file both in and out of an archive. In
their simplest forms, ci(1) and co(1) take only the
name of the working file.
ci name_of_work_file
and
co name_of_work_file
The command form
ci -l name_of_work_file
checks in the file with locking enabled, and
co -l name_of_work_file
is performed automatically. That is,
ci -l checks
the file out again with locking enabled.
ci -u name_of_work_file
checks the file into the archive, and checks it out again with
locking disabled. In all cases, the user is prompted for a log
message.
ci(1) will also create a RCS archive if one does not exist
already.
If you don't specify a revision, ci(1) increments the
version number of the last revision locked in the archive, and appends
the revised working file to it. If you specify a revision on an
existing branch, it must be higher than the existing revision numbers.
ci(1) will also create a new branch if you specify the
revision of a branch which does not exist. See the ci(1)
and co(1) man pages for details.
ci(1) and co(1) have various options for interactive
and non-interactive use. Again, see the ci(1) and
co(1) man pages for details.
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