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khanhtran3005/unix-commands.md

Last active June 26, 2018 01:48
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Some useful Unix commands for SysAd
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unix-commands.md

  • Disable a service which starts automatically sudo update-rc.d -f nginx disable

  • Space investigation:

    • Find top biggest directories under particular partition: du -a /home/xxx | sort -n -r | head -n 5

    • To display the above result in human readable format: du -Sh /home/xxx | sort -rh | head -5

    • Find Top File Sizes Only find /home/xxx -type f -exec du -Sh {} + | sort -rh | head -n 5

  • Delete files older than x days find ./$BK_FOLDER -mtime $KEEPING_DAYS -type f -delete

  • Run composer with particular PHP version: /opt/plesk/php/7.0/bin/php /usr/lib/plesk-9.0/composer.phar xxx

  • Alter files/folder permission:

    • find /specific/directory -type [f|d] -exec setfacl -Rm u:unix_account:rwx {} \;
    • find /specific/directory -type [f|d] -exec chmod 644 {} \;
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