This question already has answers here:
Can we set a variable used in a Perl script as environment variable?
(2 answers)
Closed 7 years ago.
how do you set environment variable in linux using perl script.
Code:
#!/usr/bin/perl
system ('export TEST_ENV=TEST123');
not working. Please help
use %ENV for that:
#!/usr/bin/perl
$ENV{'TEST_ENV'} = 'TEST123';
Related
This question already has answers here:
Adding a directory to the PATH environment variable in Windows
(21 answers)
Closed 6 months ago.
I want to run this command line: "C:\Program Files\LOVE\love.exe" "C:\games\mygame"
But it's too long, can i turn this into: love "C:\games\mygame"?
You have to add C:\Program Files\LOVE\ to the PATH environment variable. This way, the command can be found from the commandline without explicitly specifying the path.
See https://superuser.com/questions/284342/what-are-path-and-other-environment-variables-and-how-can-i-set-or-use-them on what environment variables are and how to set them in Windows.
This question already has answers here:
Execute shell script from scala application
(2 answers)
Closed 5 years ago.
I have a .sh file in which I want to run in Scala once a Gatling scenario has finished.
Does anyone have any code that would execute my sh script.
You should use the after block provided by Gattling :-
Refer this : https://gatling.io/docs/current/general/simulation_structure/#hooks
Here you can use after block :-
after { println("Simulation is finished!")}
Rest all is pure scala so use #Andrey answer above
This question already has answers here:
How do I run a Perl script from within a Perl script?
(9 answers)
fork + exec + caller should not wait for child
(2 answers)
perl fork() exec() , child process gone wild
(2 answers)
Perl - Communicating with a fork/exec'ed process
(2 answers)
What's the difference between Perl's backticks, system, and exec?
(5 answers)
Closed 5 years ago.
How can I start a perl script from within a perl script but without being part of the same thread of execution. Like forking and letting the original script continue execution?
I think system does not do that as I see in the same console the output of the other script
This question already has answers here:
How do I set an environment variable in Perl?
(5 answers)
Closed 6 years ago.
I was trying to set shell variable name with help of perl script.
But it was not running fine.
system("variable_name=\"variable_value\"");
`variable_name=\"variable_value\"`;
Any one tell me why it was not working.
Actually my question was little bit different.
I want to know how to set environment "setenv" with help of perl script.
I have tried
$ENV{"VARIABLE_NAME"} = "home\/path_1\/path_2\/path_3";
Then I fire command echo $VARIABLE_NAME then it is not giving me path that I set from perl script.
Thanks
You have no need to run a new shell to set an environment variable; indeed, doing so is counterproductive, since the value doesn't outlive the shell in which it's assigned (except through any surviving children of that shell which may have inherited the value).
You can simply set an environment variable directly in your perl:
$ENV{"variable_name"} = "variable_value"
Any subsequent shell you start from your perl script will see this.
It was working. The problem is that the next system command runs a new shell which doesn't know about variables set in the first shell.
system 'x=value; echo $x'; # Outputs "value".
system 'echo $x'; # Empty line - the shell with $x doesn't exist anymore.
This question already has answers here:
Closed 11 years ago.
Possible Duplicate:
How can I make Perl and Python print each line of the program being executed?
I'm looking for an equivalent of sh -x for Perl and Python.
(Excerpted from Programming Perl’s chapter on the debugger.)
If your .perldb file contains:
parse_options("NonStop=1 LineInfo=tperl.out AutoTrace");
then your program will run without human intervention, putting trace
information into the file tperl.out. (If you interrupt it, you’d better
reset LineInfo to /dev/tty if you expect to see anything.)
Install Devel::Trace and perl -d:Trace.