(CHange MODe) is one of the basic Unix
command-line tools. It is also the name of a TclX
command with the same functionality. In newer Tcl versions, one can use file attributes
(with option -permissions) to set this information.
A use of the Unix
command that is often needed is
chmod u+x myscript.tcl
chmod a+x myscript.tcl
to make the Tcl script myscript.tcl
executable (for just you or for all users, respectively). This assumes the script contains something like the exec magic
that lets the kernel figure out how to run this script, though.
package's version of this command is documented as follows:
- chmod ?-fileid? mode filelist
Set permissions of each of the files in the list filelist
, where mode
is an absolute numeric mode or symbolic permissions as in the UNIX
chmod(1) command. To specify a mode
as octal, it should be prefixed with a "0" (e.g., 0622).
If the option -fileid
is specified, filelist
is a list of open file identifiers rather than a list of file names. This option is not available on all Unix systems. Use the infox have_fchmod
command to determine if this functionality is available.
command is not available on Windows