Handy Linux Commands

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I use most of these commands every day to simplify my terminal interactions with an Ubuntu development box. This is more of a personal reference but thought I would share incase you find it useful.

Task	Command
Get all users on the system	for user in `getent passwd \| cut -d: -f1`; do id $user; done
Delete all .svn or any file name by replacing .svn in the command with your filename	`find ./ -name ".svn" \| xargs rm -Rf`
Look for enabled modules or particular environment settings in PHP	`php -r 'phpinfo();' \| grep 'searchkeyword'` for example `php -r 'phpinfo();' \| grep 'json'` to find out if JSON is installed and what version of the module is available
Push a line of text into a file	to reset file content to ‘text to push’ – `echo 'text to push' > /etc/file` to append to file content ‘text to push’ – `echo 'text to push' >> /etc/file`
Create an empty file	`touch filename.ext`
Watch a file on the command line. Useful for viewing logs whilst debugging.	`tail -f /var/log/filename.ext` use `control + c` to break
Break the current command	Use the keyboard combination `control + c`
Access to MySQL	Converting Microsoft Access MDB Into CSV Or MySQL In Linux

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