i'm using SunOS 5.7 and I know theres a ls option for seeing what kind of files are in a directory. I was wondering if there was a ls option that could see if the files are txt or files that can be opened in vi (1 Reply)
How can I use the 'ps' command to view current sessions but only for a given process/user, with the -u parm?
In older versions of Unix, this used to work, but not in Sun Solaris.
Thanks (4 Replies)
I have a perl script which runs and send out e-mail if duplicates are found.
I would like to run the with option (like -e) so that it will produce the out put only and will not send out e-mail.
How can I achieve it. I would appreciate the help.
Thanks.
Example: ./file1 (sends out e-mail)... (5 Replies)
Running HP 11.31 on a HP3600. But when I log in as a user the who command works but if I use an option like "who -m" I get nothing. Any thoughts on what is causing this problem. (11 Replies)
Hi,
what is the meaning of -n option before the grep command ?
grep command searches for the specified string in the file tmp_crontab.txt
but what does -n mean ?
With Regards (1 Reply)
could someone show me a sample command line option driven script?
i want to see an easy way to write one and how i can execute it using command line options such as typing in
read.pl -i <id> -c <cmds> -s <start> -e <end>
would read out all the commands run by ID . from start time to... (7 Replies)
I am just learning shell scripting and already I found out I have the bad habit of thinking that it is similar to php or c.
I learned some basics and now encountered this problem:
On shell it is possible to type:
$ date --date="2009-10-10 09:08:34"
Sat Oct 10 09:08:34 CEST 2009
... (2 Replies)
Dear all,
I want to execute fsck command,can i execute fsck command without any option
asking for more confidence.
Thanks and Regards
Monoj Das (1 Reply)
I am getting out of memory issue in perl. I need to debug which function taking more memory constraints. what the commands to find out the memory consuming in the perl program. (1 Reply)
I am looking for help in processing of those options: '-n' or '-p'
I understand what they do and how to use them.
But, I would like to use them with more than one file (and without any shell-loop; loading the 'perl' once.)
I did try it and -n works on 2 files.
Question is:
- is it possible to... (6 Replies)
Discussion started by: alex_5161
6 Replies
LEARN ABOUT SUSE
pdl::pod::usage
Usage(3) User Contributed Perl Documentation Usage(3)NAME
pod2usage - print a usage message using a script's embedded pod documentation
SYNOPSIS
use PDL::Pod::Usage;
pod2usage();
pod2usage(2);
pod2usage({EXIT => 2});
pod2usage({EXIT => 2, VERBOSE => 0});
pod2usage(EXIT => 1, VERBOSE => 2, OUTPUT=*STDERR);
pod2usage(VERBOSE => 2);
DESCRIPTION
pod2usage will print a usage message for the invoking script (using its embedded pod documentation) and then exit the script with the
specified exit value. It takes a single argument which is either a numeric value corresponding to the desired exit status (which defaults
to 2), or a reference to a hash. If more than one argument is given then the entire argument list is assumed to be a hash. If a hash is
supplied it should contain elements with one or more of the following keys:
"EXIT"
The desired exit status to pass to the exit() function.
"VERBOSE"
The desired level of "verboseness" to use when printing the usage message. If the corresponding value is 0, then only the "SYNOPSIS"
section of the pod documentation is printed. If the corresponding value is 1, then the "SYNOPSIS" section, along with any section
entitled "OPTIONS", "ARGUMENTS", or "OPTIONS AND ARGUMENTS" is printed. If the corresponding value is 2 or more then the entire
manpage is printed.
"OUTPUT"
A reference to a filehandle, or the pathname of a file to which the usage message should be written. The default is "*STDERR" unless
the exit value is less than 2 (in which case the default is "*STDOUT").
"INPUT"
A reference to a filehandle, or the pathname of a file from which the invoking script's pod documentation should be read. It defaults
to the file indicated by $0 ($PROGRAM_NAME for "use English;" users).
If neither the exit value nor the verbose level is specified, then the default is to use an exit value of 2 with a verbose level of 0.
If an exit value is specified but the verbose level is not, then the verbose level will default to 1 if the exit value is less than 2 and
will default to 0 otherwise.
If a verbose level is specified but an exit value is not, then the exit value will default to 2 if the verbose level is 0 and will default
to 1 otherwise.
EXAMPLE
Most scripts should print some type of usage message to STDERR when a command line syntax error is detected. They should also provide an
option (usually "-h" or "-help") to print a (possibly more verbose) usage message to STDOUT. Some scripts may even wish to go so far as to
provide a means of printing their complete documentation to STDOUT (perhaps by allowing a "-man" option). The following example uses
pod2usage in combination with Getopt::Long to do all of these things:
use PDL::Pod::Usage;
use Getopt::Long;
GetOptions("help", "man") || pod2usage(2);
pod2usage(1) if ($opt_help);
pod2usage(VERBOSE => 2) if ($opt_man);
CAVEATS
By default, pod2usage() will use $0 as the path to the pod input file. Unfortunately, not all systems on which Perl runs will set $0
properly (although if $0 isn't found, pod2usage() will search $ENV{PATH}). If this is the case for your system, you may need to explicitly
specify the path to the pod docs for the invoking script using something similar to the following:
o "pod2usage(EXIT => 2, INPUT => "/path/to/your/pod/docs");"
AUTHOR
Brad Appleton <Brad_Appleton-GBDA001@email.mot.com>
Based on code for Pod::Text::pod2text() written by Tom Christiansen <tchrist@mox.perl.com>
perl v5.12.1 2009-10-17 Usage(3)