wiki - Recent changes [en]

Processes

Hdridder — Thu, 15 Oct 2026 12:35:49 GMT

← Older revision		Revision as of 12:35, 15 October 2026
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	;killall <commandname>		;killall <commandname>
	:Kill all processes with the name <commandname> this is the name as shown by ps -ef or ps -aux without any options or parameters.		:Kill all processes with the name <commandname> this is the name as shown by ps -ef or ps -aux without any options or parameters.


			;nohup <cmd> &
			:Run <cmd> in the background with no connection to the terminal. Closing the terminal does not stop the command from running. All output is sent do a <code>nohup.out</code> file in the current directory.
			;jobs
			:Show the processes belonging to yours.


			For a command running on your terminal with CRTL-z you pause the process and are returned to the bash prompt.
			;bg
			:Put the process in the background, it starts running again
			;disown
			:Disconnect the process from the parent. You can not close the terminal without stopping the process. You cannot see this process with jobs anymore.
			;ps -u $USER -f
			:Show all processes for your username (-f for full format)

Gpg

Hdridder — Fri, 09 Oct 2026 14:02:19 GMT

Created page with "GNU Privacy Guard [https://gnupg.org/][https://en.wikipedia.org/wiki/GNU_Privacy_Guard] ;gpg --list-keys :Show your keys ;gpg --fetch-keys "<URL to keys>" :Import keys ;curl "<URL to keys>" -o <outputfile> :Download keys to outputfile ;gpg --import <file> :import keys from file ;gpg --verify <signature file> <package file> :Verify if the signature file matches the package file. If the file was changed after the signature file was created someone may have tampered it. :I..."

New page

GNU Privacy Guard [https://gnupg.org/][https://en.wikipedia.org/wiki/GNU_Privacy_Guard]

;gpg --list-keys
:Show your keys
;gpg --fetch-keys "<URL to keys>"
:Import keys
;curl "<URL to keys>" -o <outputfile>
:Download keys to outputfile
;gpg --import <file>
:import keys from file
;gpg --verify <signature file> <package file>
:Verify if the signature file matches the package file. If the file was changed after the signature file was created someone may have tampered it.
:If OK the results has: <code>Good signature from ....</code>

If you are sure a key is from a trustworthy person you can trust it in the gpg software directly or from the command-line.
;gpg --export-ownertrust > trust.txt
:Export the trust database
;gpg --import-ownertrust < trust.txt
:Import into the trust database

MariaDB/MySQL

Hdridder — Sun, 04 Oct 2026 13:21:51 GMT

← Older revision		Revision as of 13:21, 4 October 2026
(One intermediate revision by the same user not shown)
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	Put the password in a protected config file.		Put the password in a protected config file.

	vi ~/.my.~~conf~~		vi ~/.my.cnf
	[client]		[client]
	password=<password>		password=<password>
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	chmod 600 ~/.my.cnf		chmod 600 ~/.my.cnf

	When you want to use a different filename start mysql-~~clinet~~ like		When you want to use a different filename start the mysql-client like
	mysql --defaults-file=/home/francis/mysql-opts		mysql --defaults-file=/home/francis/mysql-opts

Help:Wiki

Hdridder — Fri, 25 Sep 2026 14:53:10 GMT

Upgrade

← Older revision		Revision as of 14:53, 25 September 2026
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	==Upgrade==		==Upgrade==
	* Download and extract mediawiki and your extenstions tar-files		* Make sure you have a backup of the current files and database.
	* Run <code>php ./maintenantce/~~upgrade~~.php</code>		* Download and extract mediawiki and your extenstions tar-files over the current.
			* Check if LocalSettings.php, your ./images directory are not overwritten
			* Make sure ./cache is empty
			* Run <code>php ./maintenantce/updade.php</code>
	* Link your web-root to the new release		* Link your web-root to the new release
	* Rename the old directory to xxx_old to make sure nothing is fetched from any cache (I have to do this despite removing browser history and nginx restarts)		* Rename the old directory to xxx_old to make sure nothing is fetched from any cache (I have to do this despite removing browser history and nginx restarts)

PHP

Hdridder — Fri, 25 Sep 2026 13:59:47 GMT

Upgrade

← Older revision		Revision as of 13:59, 25 September 2026
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	==Upgrade==		==Upgrade==
	Nice overview of how to upgrade can be found on [https://php.watch/articles/php-8-5-installation-upgrade-guide-debian-ubuntu php-watch]		Nice overview of how to upgrade can be found on [https://php.watch/articles/php-8-5-installation-upgrade-guide-debian-ubuntu php-watch]

			Installing multiple package can easily be done like <code>install php8.3-{fpm,curl,mbstring,mysql,xml}</code>

Unix time

Hdridder — Fri, 18 Sep 2026 11:08:23 GMT

← Older revision		Revision as of 11:08, 18 September 2026
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	[[Category: Linux/Unix]]		[[Category: Linux/Unix]]
	The number of seconds since the [https://en.wikipedia.org/wiki/Unix_time Unix Epoch] (1-1-1970).		The number of seconds since the [https://en.wikipedia.org/wiki/Unix_time Unix Epoch] (1-1-1970).

			The are online [https://www.epochconverter.com/ epoch converters]

	Originally unix time was stored as a 32-bits integer which limits the time to reaching 19 January 2038 03:14:07 UTC [https://en.wikipedia.org/wiki/Year_2038_problem]. Modern computers use a 64-bit field that expands the maximum time far beyond the expected lifetime of the universe.		Originally unix time was stored as a 32-bits integer which limits the time to reaching 19 January 2038 03:14:07 UTC [https://en.wikipedia.org/wiki/Year_2038_problem]. Modern computers use a 64-bit field that expands the maximum time far beyond the expected lifetime of the universe.