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Full Discussion: Perl - Count occurences
Top Forums Shell Programming and Scripting Perl - Count occurences Post 302282233 by SFNYC on Friday 30th of January 2009 10:43:20 AM
Old 01-30-2009
Here is how to get the path name:

Code:
$ cat ./pathtest.pl
#!/usr/bin/perl

use strict;
use warnings;
use File::Basename;

my $filename = "/usr/bin/perl";
my $dirname = dirname($filename);
my $basename = basename($filename);

print "The filename is $filename\n";
print "The path is $dirname\n";
print "The basename is $basename\n";
print "Put it together and they spell $dirname/$basename\n";

exit 0;

$ ./pathtest.pl
The filename is /usr/bin/perl
The path is /usr/bin
The basename is perl
Put it together and they spell /usr/bin/perl

 

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SMRSH(8)						      System Manager's Manual							  SMRSH(8)

NAME
smrsh - restricted shell for sendmail SYNOPSIS
smrsh -c command DESCRIPTION
The smrsh program is intended as a replacement for sh for use in the ``prog'' mailer in sendmail(8) configuration files. It sharply limits the commands that can be run using the ``|program'' syntax of sendmail in order to improve the over all security of your system. Briefly, even if a ``bad guy'' can get sendmail to run a program without going through an alias or forward file, smrsh limits the set of programs that he or she can execute. Briefly, smrsh limits programs to be in a single directory, by default /usr/libexec/sm.bin, allowing the system administrator to choose the set of acceptable commands, and to the shell builtin commands ``exec'', ``exit'', and ``echo''. It also rejects any commands with the characters ``', `<', `>', `;', `$', `(', `)', ` ' (carriage return), or ` ' (newline) on the command line to prevent ``end run'' attacks. It allows ``||'' and ``&&'' to enable commands like: ``"|exec /usr/local/bin/filter || exit 75"'' Initial pathnames on programs are stripped, so forwarding to ``/usr/bin/vacation'', ``/home/server/mydir/bin/vacation'', and ``vacation'' all actually forward to ``/usr/libexec/sm.bin/vacation''. System administrators should be conservative about populating the sm.bin directory. For example, a reasonable additions is vacation(1), and the like. No matter how brow-beaten you may be, never include any shell or shell-like program (such as perl(1)) in the sm.bin direc- tory. Note that this does not restrict the use of shell or perl scripts in the sm.bin directory (using the ``#!'' syntax); it simply dis- allows execution of arbitrary programs. Also, including mail filtering programs such as procmail(1) is a very bad idea. procmail(1) allows users to run arbitrary programs in their procmailrc(5). COMPILATION
Compilation should be trivial on most systems. You may need to use -DSMRSH_PATH="path" to adjust the default search path (defaults to ``/bin:/usr/bin'') and/or -DSMRSH_CMDDIR="dir" to change the default program directory (defaults to ``/usr/libexec/sm.bin''). FILES
/usr/adm/sm.bin - default directory for restricted programs on most OSs /var/adm/sm.bin - directory for restricted programs on HP UX and Solaris /usr/libexec/sm.bin - directory for restricted programs on FreeBSD (>= 3.3) and DragonFly BSD SEE ALSO
sendmail(8) $Date: 2013-11-22 20:52:00 $ SMRSH(8)
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