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(cvs.info)Environment variables

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All environment variables which affect CVS
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   This is a complete list of all environment variables that affect CVS.

`$CVSIGNORE'
     A whitespace-separated list of file name patterns that CVS should
     ignore. Note: cvsignore.

`$CVSWRAPPERS'
     A whitespace-separated list of file name patterns that CVS should
     treat as wrappers. Note: Wrappers.

`$CVSREAD'
     If this is set, `checkout' and `update' will try hard to make the
     files in your working directory read-only.  When this is not set,
     the default behavior is to permit modification of your working
     files.

`$CVSUMASK'
     Controls permissions of files in the repository.  See Note: File
     permissions.

`$CVSROOT'
     Should contain the full pathname to the root of the CVS source
     repository (where the RCS files are kept).  This information must
     be available to CVS for most commands to execute; if `$CVSROOT' is
     not set, or if you wish to override it for one invocation, you can
     supply it on the command line: `cvs -d cvsroot cvs_command...'
     Once you have checked out a working directory, CVS stores the
     appropriate root (in the file `CVS/Root'), so normally you only
     need to worry about this when initially checking out a working
     directory.

`$EDITOR'
`$CVSEDITOR'
`$VISUAL'
     Specifies the program to use for recording log messages during
     commit.  `$CVSEDITOR' overrides `$EDITOR'.  See Note: Committing
     your changes.

`$PATH'
     If `$RCSBIN' is not set, and no path is compiled into CVS, it will
     use `$PATH' to try to find all programs it uses.

`$HOME'

`$HOMEPATH'

`$HOMEDRIVE'
     Used to locate the directory where the `.cvsrc' file, and other
     such files, are searched.  On Unix, CVS just checks for `HOME'.
     On Windows NT, the system will set `HOMEDRIVE', for example to
     `d:' and `HOMEPATH', for example to `\joe'.  On Windows 95, you'll
     probably need to set `HOMEDRIVE' and `HOMEPATH' yourself.

`$CVS_RSH'
     Specifies the external program which CVS connects with, when
     `:ext:' access method is specified.  Note: Connecting via rsh.

`$CVS_SERVER'
     Used in client-server mode when accessing a remote repository
     using RSH.  It specifies the name of the program to start on the
     server side when accessing a remote repository using RSH.  The
     default value is `cvs'.  Note: Connecting via rsh

`$CVS_PASSFILE'
     Used in client-server mode when accessing the `cvs login server'.
     Default value is `$HOME/.cvspass'.  Note: Password authentication
     client

`$CVS_CLIENT_PORT'
     Used in client-server mode when accessing the server via Kerberos,
     GSSAPI, or CVS's password authentication if the port is not
     specified in $CVSROOT.  Note: Remote repositories

`$CVS_RCMD_PORT'
     Used in client-server mode.  If set, specifies the port number to
     be used when accessing the RCMD demon on the server side.
     (Currently not used for Unix clients).

`$CVS_CLIENT_LOG'
     Used for debugging only in client-server mode.  If set, everything
     sent to the server is logged into ``$CVS_CLIENT_LOG'.in' and
     everything sent from the server is logged into
     ``$CVS_CLIENT_LOG'.out'.

`$CVS_SERVER_SLEEP'
     Used only for debugging the server side in client-server mode.  If
     set, delays the start of the server child process the specified
     amount of seconds so that you can attach to it with a debugger.

`$CVS_IGNORE_REMOTE_ROOT'
     For CVS 1.10 and older, setting this variable prevents CVS from
     overwriting the `CVS/Root' file when the `-d' global option is
     specified.  Later versions of CVS do not rewrite `CVS/Root', so
     `CVS_IGNORE_REMOTE_ROOT' has no effect.

`$COMSPEC'
     Used under OS/2 only.  It specifies the name of the command
     interpreter and defaults to CMD.EXE.

`$TMPDIR'
`$TMP'
`$TEMP'
     Directory in which temporary files are located.  The CVS server
     uses `TMPDIR'.  Note: Global options, for a description of how
     to specify this.  Some parts of CVS will always use `/tmp' (via
     the `tmpnam' function provided by the system).

     On Windows NT, `TMP' is used (via the `_tempnam' function provided
     by the system).

     The `patch' program which is used by the CVS client uses `TMPDIR',
     and if it is not set, uses `/tmp' (at least with GNU patch 2.1).
     Note that if your server and client are both running CVS 1.9.10 or
     later, CVS will not invoke an external `patch' program.