08-09-2019
I had a lot of experience with perl, however I understood that perl is dying. Hence I would not recommend it to any beginner.
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1. Shell Programming and Scripting
Can anyone tell me if the copy command in PERL has the same functionality as in KSH shell in UNIX or does it actually move the file ??
$cp_stat=system("cp $ENV{OLAMEBSDIR}/data/olam.ddabal$type $ENV{OLAMDIR}/balance/data/olam.ddabal$type.$HeaderDate"); (1 Reply)
Discussion started by: frank
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2. Shell Programming and Scripting
Could someone tell me what is wrong with these PERL statements
it is always setting the $status2 to the number inside of the brackets......why????????
if (/^Status:/)
{
$stat = $Fld;
print "\$stat is $stat\n";
}
the above is where i'm searching for a string... (1 Reply)
Discussion started by: frank
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3. Shell Programming and Scripting
Where can i find solid information about programming in Perl?
Thank you in advance!!!:) (5 Replies)
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4. Shell Programming and Scripting
When i run my perl/tk script, a perl window pops up behind the GUI window,, can this be hidden????
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5. Shell Programming and Scripting
If I use 2 system commands in a script, will one finish before the next one starts? or will it start the first and the second at the same time?
i.e.
system("ps | grep rminer");
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6. Shell Programming and Scripting
Hi everyone
I am not even a novice at Perl scripting .. but had to edit one the other day. The only way I can get it to run is by prefixing 'perl' before running it - ie # perl scriptname
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Thanks! (2 Replies)
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7. Shell Programming and Scripting
Playing with an until loop as follows:
my $input;
until ($input eq "quit") {
print "Please enter something:";
$input = <STDIN>;
chomp $input;
if ($input eq "dog") {
print "cat" ;
}
else {
print "Please re-enter";
}
}
Something simple like this...
I want to prompt the user to... (3 Replies)
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8. Shell Programming and Scripting
Hi All,
I am new to perl and just want to read the text file and write back it into another file with some modification.
Here is my requirement:
input file:
USB_OTG_PATH top.usb_top.otg_top
USB_HSIC_PATH top.usb_top.hsic_top
.. (All starts with USB_)
...
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9. Shell Programming and Scripting
Hi All,
I am new to Perl and got a real stupid question. We are trying to install the Date:Calc package for some calculations with dates.The security guys mentioned they won't install it as root in /usr/bin/perl but have asked us to install it in any directory and use it from there.
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10. Programming
I have reviewed many examples on-line about running another process (either PERL or shell command or a program), but do not find any usefull for my needs way. (Reviewed and not useful the system(), 'back ticks', exec() and open())
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Discussion started by: alex_5161
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PPERL(1p) User Contributed Perl Documentation PPERL(1p)
NAME
PPerl - Make perl scripts persistent in memory
SYNOPSIS
$ pperl foo.pl
DESCRIPTION
This program turns ordinary perl scripts into long running daemons, making subsequent executions extremely fast. It forks several processes
for each script, allowing many processes to call the script at once.
It works a lot like SpeedyCGI, but is written a little differently. I didn't use the SpeedyCGI codebase, because I couldn't get it to
compile, and needed something ASAP.
The easiest way to use this is to change your shebang line from:
#!/usr/bin/perl -w
To use pperl instead:
#!/usr/bin/pperl -w
WARNINGS
Like other persistent environments, this one has problems with things like BEGIN blocks, global variables, etc. So beware, and try checking
the mod_perl guide at http://perl.apache.org/guide/ for lots of information that applies to many persistent perl environments.
Parameters
$ pperl <perl params> -- <pperl params> scriptname <script params>
The perl params are sent to the perl binary the first time it is started up. See perlrun for details.
The pperl params control how pperl works. Try -h for an overview.
The script params are passed to the script on every invocation. The script also gets any current environment variables, the current working
directory, and everything on STDIN.
Killing
In order to kill a currently running PPerl process, use:
pperl -- -k <scriptname>
You need to make sure the path to the script is the same as when it was invoked.
Alternatively look for a .pid file for the script in your tmp directory, and kill (with SIGINT) the process with that PID.
ENVIRONMENT
pperl uses the PPERL_TMP_PATH environment variable to determine the directory where to store the files used for inter-process
communication. By default, the subdirectory .pperl of the user's home directory is used.
BUGS
The process does not reload when the script or modules change.
$^S is not represented identically with respect to perl, since your script will be run within an eval block
AUTHOR
Matt Sergeant, matt@sergeant.org. Copyright 2001 MessageLabs Ltd.
SEE ALSO
perl. perlrun.
perl v5.14.2 2011-11-15 PPERL(1p)