If you’ve ever noticed your CPU load skyrocket inappropriately, a good place to find the errant process is with the top command, use top in conjection with kill to find the process ID and kill the CPU hog.You can export the contents of a file, output of a command, and results of a script to a text file using the alligators (improper terminology, excuse my forgetfulness), eg: ls -la /Applications > applist.txt.If the output of a command flies by you and is too much to fit on one screen, try piping it through more, like so: ls -la |more this will enable you to see the output a screen at a time.Remember manual pages exist on many commands as well, access them by typing man, eg: man ping.If a command confuses you, try running it with the –help flag, which will often display basic instructions on the given command.Enable colored terminal, this makes it easier to browse through large amounts of files.Use the tab key, the tab key will autocomplete directories and filenames for you.ping determine network latency by pinging another host.rm rm removes the specified file or directory, there is no warning so use with caution.kill -9 kill the specified process id (basically force quit for the command line).ps -aux list all processes running from all users, -ux will list only processes of current user.top display a continuously updated list of all running processes, including memory and cpu usage, PID is the process ID which you would use to kill a process.touch creates a file with the given name, eg: touch test.txt will create a blank text file.cat | more display contents of a file screen by screen by ‘piping’ the contents through more.cp copies a file to either a new filename or destination.mv mv is able to rename files or move them, depending on usage.cd move to the specified directory, cd /Applications will move to your applications folder.ls -la list all contents of a directory including hidden files.
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