Within a script, I want to switch perl executable. I can do this within .bashrc with the alias feature, but the following didn't work when I tried it within a bash script.
Code:
alias perl='perlroot/bin/perl'
which perl # want this to be above perl, but it's still /usr/bin/perl.
Can someone tell me how to get this to work? Thanks!
Hi Friends,
Can any of you explain me about the below line of code?
mn_code=`env|grep "..mn"|awk -F"=" '{print $2}'`
Im not able to understand, what exactly it is doing :confused:
Any help would be useful for me.
Lokesha (4 Replies)
Hi,
I was trying to call "script <an ip add>" command from .profile file to log everything whenever anyone logs in to this user. I did the following at the end of .profile. 1) Extracted the IP address who logged in 2) Called script < ip add> . The problem I am facing is all, aliases etc. written... (3 Replies)
In all of my brief and superficial experience with Unix or Linux, the one curious and consistent thing has been that 'cd ./' (back up one directory level) has done absolutely nothing in any of them. Now I understand that, at least for bash, 'cd ./' appears to have been substituted by 'cd ..'
Am... (1 Reply)
I had the idea come into my head that it would be good to have a single command that gave file type, file size, last modification date, and owner/group information, like what one would see in a GUI "Properties" dialog, but all in a terminal window. In my opinion, these statistics about a file... (5 Replies)
Hi,
I have line in input file as below:
3G_CENTRAL;INDONESIA_(M)_TELKOMSEL;SPECIAL_WORLD_GRP_7_FA_2_TELKOMSEL
My expected output for line in the file must be :
"1-Radon1-cMOC_deg"|"LDIndex"|"3G_CENTRAL|INDONESIA_(M)_TELKOMSEL"|LAST|"SPECIAL_WORLD_GRP_7_FA_2_TELKOMSEL"
Can someone... (7 Replies)
Hi All,
I'm completely new to bash scripting and still learning my way through albeit vey slowly.
I need to know where to insert my server names', my ip address numbers through out the script alas to no avail.
I'm also searching on how to save .sh (bash shell) script properly.... (25 Replies)
How to use "mailx" command to do e-mail reading the input file containing email address, where column 1 has name and column 2 containing “To” e-mail address
and column 3 contains “cc” e-mail address to include with same email.
Sample input file, email.txt
Below is an sample code where... (2 Replies)
Hello.
System : opensuse leap 42.3
I have a bash script that build a text file.
I would like the last command doing :
print_cmd -o page-left=43 -o page-right=22 -o page-top=28 -o page-bottom=43 -o font=LatinModernMono12:regular:9 some_file.txt
where :
print_cmd ::= some printing... (1 Reply)
Discussion started by: jcdole
1 Replies
LEARN ABOUT DEBIAN
findbin
FindBin(3perl) Perl Programmers Reference Guide FindBin(3perl)NAME
FindBin - Locate directory of original perl script
SYNOPSIS
use FindBin;
use lib "$FindBin::Bin/../lib";
or
use FindBin qw($Bin);
use lib "$Bin/../lib";
DESCRIPTION
Locates the full path to the script bin directory to allow the use of paths relative to the bin directory.
This allows a user to setup a directory tree for some software with directories "<root>/bin" and "<root>/lib", and then the above example
will allow the use of modules in the lib directory without knowing where the software tree is installed.
If perl is invoked using the -e option or the perl script is read from "STDIN" then FindBin sets both $Bin and $RealBin to the current
directory.
EXPORTABLE VARIABLES
$Bin - path to bin directory from where script was invoked
$Script - basename of script from which perl was invoked
$RealBin - $Bin with all links resolved
$RealScript - $Script with all links resolved
KNOWN ISSUES
If there are two modules using "FindBin" from different directories under the same interpreter, this won't work. Since "FindBin" uses a
"BEGIN" block, it'll be executed only once, and only the first caller will get it right. This is a problem under mod_perl and other
persistent Perl environments, where you shouldn't use this module. Which also means that you should avoid using "FindBin" in modules that
you plan to put on CPAN. To make sure that "FindBin" will work is to call the "again" function:
use FindBin;
FindBin::again(); # or FindBin->again;
In former versions of FindBin there was no "again" function. The workaround was to force the "BEGIN" block to be executed again:
delete $INC{'FindBin.pm'};
require FindBin;
KNOWN BUGS
If perl is invoked as
perl filename
and filename does not have executable rights and a program called filename exists in the users $ENV{PATH} which satisfies both -x and -T
then FindBin assumes that it was invoked via the $ENV{PATH}.
Workaround is to invoke perl as
perl ./filename
AUTHORS
FindBin is supported as part of the core perl distribution. Please send bug reports to <perlbug@perl.org> using the perlbug program
included with perl.
Graham Barr <gbarr@pobox.com> Nick Ing-Simmons <nik@tiuk.ti.com>
COPYRIGHT
Copyright (c) 1995 Graham Barr & Nick Ing-Simmons. All rights reserved. This program is free software; you can redistribute it and/or
modify it under the same terms as Perl itself.
perl v5.14.2 2011-09-26 FindBin(3perl)