This question already has answers here:
How to stop a PowerShell script on the first error?
(11 answers)
Closed 3 years ago.
I've been using Unix for about 20 years, but only started using Powershell recently. I have a ps1 script that does a number of tasks.
I know I could check each of them, and throw if they error, but it would be good for the entire script just to exit on any errors - like set -e does in bash.
How can I make a Powershell script exit immediately upon any error?
Using pwsh 6.2.1.
Having just found the answer to my own question:
ErrorActionPreference does this.
$ErrorActionPreference='Stop'
at the top of the ps1 file.
Related
This question already has answers here:
How can I start an interactive console for Perl?
(24 answers)
Closed 1 year ago.
I have asked a similar question elsewhere but it eventually evolved into a series of comments. So once again, what package should I install to see the following prompt > after running perl but now not raku (all under Cygwin)?
EDIT
-l doesn't work either.
EDIT 2
Perl -d -e1 doesn't work for me either (Answer in comments as this question is closed):
You didn't provide the name of a program, and you didn't provide a program via the -e or -E command line options, so it's reading the program from STDIN.
perl does have a builtin debugger that you access by passing -d, but you still need to provide a program. (You can provide a trivial one using -e1.)
See How can I start an interactive console for Perl? for alternatives.
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:
Is there a way to programmatically set the ApartmentState to STA?
(2 answers)
Closed 7 years ago.
I have a script that needs to run in single-threaded mode, and I currently start it up with the -sta parameter with a batch. Is it possible to run the script in -sta mode only executing the Script? I thought about moving the whole script into one function and execute this function in single-threaded mode.
Is that possible? I don't want to give out a batch file and my ps1.
I think if you were to get PowerGUI and put the script into this, you would be able to package the PS1 file into an exe file which can just be executed like a normal program.
Once PowerGUI is installed you can do this from Tools, Complile Script.
This question already has answers here:
Closed 11 years ago.
Possible Duplicate:
How can I fire and forget a process in Perl?
I'm looking for a way to invoke a new process from a Perl script, that will let a launched program and a Perl script, from which it's launched, proceed to work concurrently.
The program is SIPp, if it's important.
Thank you.
If you actually want separate processes, then another option is fork and exec.
if (fork) {
# In the parent program
# Continue as usual
...
} else {
# In the new child program
# Replace with another program
exec $some_other_program;
}
SIPp has "-bg" commandline parameter.
This parameter launches SIPp in background mode.
Use Proc::Background
In Windows system you may use "start" command.
For example:
start notepad
OR
start /d"C\Program Files\Sipp3.1" sipp.exe -sn uac