Filesystem Hierarchy Standard
This is the primary directory of executable commands on the system.
The following directories, or symbolic links to directories, must be in /usr/bin, if the corresponding
subsystem is installed:
"/usr/bin"
mh
|
"Binaries that are not needed in single-user mode"
Commands for the MH mail handling system (optional)
|
Tree 4.5.2.1
/usr/bin/X11 must be a symlink to /usr/X11R6/bin if the
latter exists.
The following files, or symbolic links to files, must be in /usr/bin, if the corresponding
subsystem is installed:
| perl
| The Practical Extraction and Report Language (optional)
|
| python
| The Python interpreted language (optional)
|
| tclsh
| Simple shell containing Tcl interpreter (optional)
|
| wish
| Simple Tcl/Tk windowing shell (optional)
|
| expect
| Program for interactive dialog (optional)
|
Table 4.5.2.1
BEGIN RATIONALE
Because shell script interpreters (invoked with #!<path> on the
first line of a shell script) cannot rely on a path, it is advantageous
to standardize their locations. The Bourne shell and C-shell
interpreters are already fixed in /bin, but Perl, Python, and
Tcl are often found in many different places. They may be symlinks to
the physical location of the shell interpreters.
END RATIONALE
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Translated by troff2html v1.5 on 29 March 2002 by Daniel Quinlan