Useful Commands/System Management - Revision history

Tacoball: /* TODO */

2025-04-03T20:23:18Z

TODO

← Older revision		Revision as of 20:23, 3 April 2025
Line 9:		Line 9:
	\|-		\|-
	\| List process \|\|		\| List process \|\|
	<~~source~~ lang="bash">		<syntaxhighlight lang="bash">
	ps -axo pid,command		ps -axo pid,command
	ps -axo pid,command \| awk 'match($2, /^ssh/) { print $0; }'		ps -axo pid,command \| awk 'match($2, /^ssh/) { print $0; }'
	ps -axo pid,command \| awk 'match($2, /^login/) { print $0; }'		ps -axo pid,command \| awk 'match($2, /^login/) { print $0; }'
	ps -axo pid,command \| awk 'match($2, /^-?bash/) { print $0; }'		ps -axo pid,command \| awk 'match($2, /^-?bash/) { print $0; }'
	</~~source~~>		</syntaxhighlight>
	\|-		\|-
	\| List process tree \|\|		\| List process tree \|\|
	<~~source~~ lang="bash">		<syntaxhighlight lang="bash">
	pstree 713		pstree 713
	pstree $(ps -axo pid,command \| awk 'match($2, /^login/) { print $1 }')		pstree $(ps -axo pid,command \| awk 'match($2, /^login/) { print $1 }')
	</~~source~~>		</syntaxhighlight>
	\|-		\|-
	\| CPU & Memory \|\|		\| CPU & Memory \|\|
	<~~source~~ lang="bash">		<syntaxhighlight lang="bash">
	# Linux		# Linux
	cat /proc/cpuinfo		cat /proc/cpuinfo
Line 29:		Line 29:
	free		free
	sudo dmidecode --type 17,19,20		sudo dmidecode --type 17,19,20
	</~~source~~>		</syntaxhighlight>
	\|-		\|-
	\| Locale \|\|		\| Locale \|\|
	<~~source~~ lang="bash">		<syntaxhighlight lang="bash">
	locale # current locale		locale # current locale
	locale -a # available locales		locale -a # available locales
	sudo locale-gen # rebuild locales		sudo locale-gen # rebuild locales
	</~~source~~>		</syntaxhighlight>
	\|-		\|-
	\| Run a command one minute later \|\|		\| Run a command one minute later \|\|
	<~~source~~ lang="bash">		<syntaxhighlight lang="bash">
	echo "ls -l > `tty`" \| at now + 1 minute		echo "ls -l > `tty`" \| at now + 1 minute
	</~~source~~>		</syntaxhighlight>
	\|}		\|}

Tacoball at 07:19, 27 January 2022

2022-01-27T07:19:40Z

← Older revision		Revision as of 07:19, 27 January 2022
Line 1:		Line 1:
			== OS Management ==

			123

			== TODO ==

	{\| class="wikitable"		{\| class="wikitable"
	! 情境 \|\| 指令		! 情境 \|\| 指令

Tacoball at 05:56, 16 November 2020

2020-11-16T05:56:59Z

← Older revision		Revision as of 05:56, 16 November 2020
Line 22:		Line 22:
	cat /proc/meminfo		cat /proc/meminfo
	free		free
			sudo dmidecode --type 17,19,20
	</source>		</source>
	\|-		\|-

Tacoball at 09:19, 8 March 2019

2019-03-08T09:19:25Z

← Older revision		Revision as of 09:19, 8 March 2019
Line 12:		Line 12:
	\| List process tree \|\|		\| List process tree \|\|
	<source lang="bash">		<source lang="bash">
	~~# Mac/BSD~~		pstree 713
	pstree -p 713
	pstree $(ps -axo pid,command \| awk 'match($2, /^login/) { print $1 }')		pstree $(ps -axo pid,command \| awk 'match($2, /^login/) { print $1 }')

	~~# Linux~~
	~~pstree 713~~
	~~pstree -p $(ps -acxo pid,command \| awk '/sshd/{print $1}' \| head -n 1)~~
	~~pstree -p $(ps -acxo pid,command \| awk '/bash/{print $1}' \| tail -n 2 \| head -n 1)~~
	</source>		</source>
	\|-		\|-

Tacoball at 09:18, 8 March 2019

2019-03-08T09:18:51Z

← Older revision		Revision as of 09:18, 8 March 2019
Line 32:		Line 32:
	\| Locale \|\|		\| Locale \|\|
	<source lang="bash">		<source lang="bash">
	locale # current locale		locale # current locale
	locale -a # available locales		locale -a # available locales
	sudo locale-gen # rebuild locales		sudo locale-gen # rebuild locales
	</source>		</source>
	\|-		\|-
	\| ~~一分鐘後執行指令~~ \|\|		\| Run a command one minute later \|\|
	<source lang="bash">		<source lang="bash">
	echo "ls -l > `tty`" \| at now + 1 minute		echo "ls -l > `tty`" \| at now + 1 minute
	</source>		</source>
	\|}		\|}

Tacoball at 09:18, 8 March 2019

2019-03-08T09:18:18Z

← Older revision		Revision as of 09:18, 8 March 2019
Line 22:		Line 22:
	</source>		</source>
	\|-		\|-
	\| ~~顯示CPU資訊~~ \|\|		\| CPU & Memory \|\|
	<source lang="bash">		<source lang="bash">
			# Linux
	cat /proc/cpuinfo		cat /proc/cpuinfo
	~~</source>~~
	\|-
	~~\| 顯示記憶體資訊 \|\|~~
	~~<source lang="bash">~~
	cat /proc/meminfo		cat /proc/meminfo
	~~</source>~~
	\|-
	~~\| 釋放記憶體並且顯示記憶體資訊 \|\|~~
	~~<source lang="bash">~~
	free		free
	</source>		</source>
	\|-		\|-
	\| ~~檢查使用中的語系 \|\|~~		\| Locale \|\|
	~~<source lang="bash">~~
	~~locale~~
	~~</source>~~
	\|-
	~~\| 檢查可使用的語系 \|\|~~
	~~<source lang="bash">~~
	~~locale -a~~
	~~</source>~~
	\|-
	~~\| 重建語系定義檔~~ \|\|
	<source lang="bash">		<source lang="bash">
	sudo locale-gen		locale # current locale
			locale -a # available locales
			sudo locale-gen # rebuild locales
	</source>		</source>
	\|-		\|-

Tacoball at 09:07, 8 March 2019

2019-03-08T09:07:35Z

@@ Line 35: / Line 35: @@
 <source lang="bash">
 free
 </source>
 |-
@@ Line 66: / Line 50: @@
 <source lang="bash">
 sudo locale-gen
 </source>
 |-

Tacoball at 09:03, 8 March 2019

2019-03-08T09:03:38Z

← Older revision		Revision as of 09:03, 8 March 2019
Line 12:		Line 12:
	\| List process tree \|\|		\| List process tree \|\|
	<source lang="bash">		<source lang="bash">
	# BSD ~~style~~		# Mac/BSD
	pstree -p 713		pstree -p 713
	pstree -p $(ps -~~acxo~~ pid,command \| awk '/login/~~{print $1}' \| tail -n 1~~)		pstree $(ps -axo pid,command \| awk 'match($2, /^login/) { print $1 }')
	~~pstree -p $(ps -acxo pid,command \| awk '/bash/~~{print $1}' ~~\| tail -n 2 \| head -n 1~~)

	# Linux ~~style~~		# Linux
	pstree 713		pstree 713
	pstree -p $(ps -acxo pid,command \| awk '/sshd/{print $1}' \| head -n 1)		pstree -p $(ps -acxo pid,command \| awk '/sshd/{print $1}' \| head -n 1)

Tacoball at 09:00, 8 March 2019

2019-03-08T09:00:47Z

← Older revision		Revision as of 09:00, 8 March 2019
Line 6:		Line 6:
	ps -axo pid,command		ps -axo pid,command
	ps -axo pid,command \| awk 'match($2, /^ssh/) { print $0; }'		ps -axo pid,command \| awk 'match($2, /^ssh/) { print $0; }'
			ps -axo pid,command \| awk 'match($2, /^login/) { print $0; }'
	ps -axo pid,command \| awk 'match($2, /^-?bash/) { print $0; }'		ps -axo pid,command \| awk 'match($2, /^-?bash/) { print $0; }'
	~~ps -axo pid,command \| awk 'match($2, /^login/) { print $0; }'~~
	</source>		</source>
	\|-		\|-

Tacoball at 09:00, 8 March 2019

2019-03-08T09:00:33Z

← Older revision		Revision as of 09:00, 8 March 2019
Line 7:		Line 7:
	ps -axo pid,command \| awk 'match($2, /^ssh/) { print $0; }'		ps -axo pid,command \| awk 'match($2, /^ssh/) { print $0; }'
	ps -axo pid,command \| awk 'match($2, /^-?bash/) { print $0; }'		ps -axo pid,command \| awk 'match($2, /^-?bash/) { print $0; }'
			ps -axo pid,command \| awk 'match($2, /^login/) { print $0; }'
	</source>		</source>
	\|-		\|-