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There, perl remains in the same process group but instead is telling the terminal device that the foreground process group is the one whose ID is the same as its parent process ID (see note above about that). Basically tell the tty device to send the SIGINT to some other process group upon Ctrl+C perl -MPOSIX -e 'tcsetpgrp(0,getppid) or die$! sleep 5' Or it could change the foreground process group. ps and perl are started in the foreground process group, but on most shells, ps would be the leader of that group (as seen in the ps output above where the pgid of both ps and perl is the pid of ps), so perl can start its own process group. Press the E key to select the Edit option. Open the Command Prompt through the above method, and then click on the Alt + Space keys to open the window menu. To do so, follow the steps below: Step 1. $F & (1&2 | perl -MPOSIX -e 'setpgid(0,0) or die "$!" sleep 10' If all the above methods can’t fix Ctrl C and Ctrl V not working, you may have to choose an alternative way. If you don’t have the time, patience or computer skills to update your keyboard driver manually, you can do it automatically with Driver Easy. You should try updating your keyboard driver to see if this fixes your issue. You can automate that with: $ SIG=$(kill -l INT) perl -lane 'print $1 if $F =~ /^Sig(.):/ & Your Ctrl and C key combination may not work because you’re using a wrong keyboard driver or it’s out of date. The second bit of SigIgn above is 1, which mean SIGINT is ignored. On Linux (with a relatively recent kernel), you can tell if a process is ignoring and/or handling SIGINT by looking at the output of $ kill -l INT Or, they can be uninterruptible, like when in a middle of a system call that can't be interrupted.
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A couple of silly troubleshooting questions I hate asking, have you tried restarting the computer and then reloading the game?
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