Category — Command Line

Open Terminal and type uuidgen, press return. There’s your ID string.

Starting SQL:

sudo /usr/local/mysql/support-files/mysql.server start

Stopping SQL:

sudo /usr/local/mysql/support-files/mysql.server stop

Display hidden files by typing in the Terminal:  defaults write com.apple.finder AppleShowAllFiles TRUE
then relaunch the Finder with: killall Finder

Change TRUE to FALSE in the top line and relaunch the Finder to reverse the effect.

ln -s [path to the file you want to link to] [name of the alias]

For example:

ln -s /private/var/mysql/mysql.sock /private/tmp/mysql.sock

creates a symbolic link (an alias) of the mysql.sock file in /var/ and places the alias in /tmp

BTW, to get the path of a file into Terminal, just drag the file icon into the Terminal window.