HCS Blog

The command below will ping the ip address three times and for each response, your default OS X alert sound will play.  The -a flag in the command below means Audible.  And if not obvious, the -c means ping count.

ping -c3 -a 192.168.1.100

If you're running OS X Yosemite and above, you can use the new "sysadminctl" command to easily create users from the command line.

sudo sysadminctl -addUser keith -password mypassword

sudo -i   

This will give you root access and switch the home folder to the root user.  

In this example, the file named “file1.txt” with be copied to a file named “file1.txt.bak” without having to type in the second file name.  This is done using brace expansion.

 In Terminal, enter the command below:

Open Terminal and type:

nano .bash_profile

At the bottom of your .bash_profile, add these lines and save the file.

NOTE:  If you use a Dark terminal theme, use this:

export CLICOLOR=1
export LSCOLORS=GxFxCxDxBxegedabagaced


NOTE:  If you use a Light terminal theme, use this:

export CLICOLOR=1
export LSCOLORS=ExFxBxDxCxegedabagacad


Once your .bash_profile is saved, enter the command below:


ls -alh

The output should now be in different colors.

Enter the following command in Terminal:

sudo launchctl config user umask 000


Get info on other versions of OS X here:  https://support.apple.com/en-us/HT201684