54 lines
1.4 KiB
Markdown
54 lines
1.4 KiB
Markdown
If you want to kill a program in a graphical environment, open a terminal and typeL
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## Graphical Programs
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> xkill
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Then click on the application which you want to kill.
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## All Programs
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To kill a program, find it with:
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> pgrep discord
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This will give you the UUID, e.g. `19643`.
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Kill the program with:
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> kill 19643
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## Types of Kill
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To see an ordered list of termination signals:
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> kill -l
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1) SIGHUP 2) SIGINT 3) SIGQUIT 4) SIGILL 5) SIGTRAP
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6) SIGABRT 7) SIGBUS 8) SIGFPE 9) SIGKILL 10) SIGUSR1
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11) SIGSEGV 12) SIGUSR2 13) SIGPIPE 14) SIGALRM 15) SIGTERM
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You can select these levels with a '- number'.
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Higher numbers are roughly equivalent to insistence.
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For example:
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> kill -1 3498
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This roughly means 'maybe stop the program, if you can, maybe reload'.
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Or the famous:
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> kill -9 3298
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This means 'kill the program dead, now, no questions, dead'.
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**Beware** - if Firefox starts another program to connect to the internet, and you `kill -9 firefox`, this will leave all of Firefox's internet connection programs ("children") still there, but dead and useless.
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- A dead program which sits there doing nothing is known as a 'zombie'.
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- A program which is run by another program is called a 'child program'.
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- A child whose parent program is dead is called an 'orphan'.
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- A child who remains running despite being useless because the parent is dead is called an 'orphan zombie'.
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