Malin Freeborn
ba8026e0c3
input examples are now given as ```bash input $ARG1 ``` While outputs use md's '> ' sign as a quote.
75 lines
1.5 KiB
Markdown
75 lines
1.5 KiB
Markdown
---
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title: "kill"
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tags: [ "Documentation", "Basics" ]
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---
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If you want to kill a program in a graphical environment, open a terminal and type:
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# Graphical Programs
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```bash
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xkill
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```
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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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```bash
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pgrep discord
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```
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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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```bash
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kill 19643
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```
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# Types of Kill
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To see an ordered list of termination signals:
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```bash
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kill -l
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```
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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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```bash
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kill -1 3498
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```
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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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```bash
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kill -9 3298
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```
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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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# Sobriquets
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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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