LINUX HACK 3

Hack 3. 
Perform mkdir and cd using a single command:

 
Sometimes when you create a new directory, you may cd to the new directory immediately to perform some work as shown below.
# mkdir -p /tmp/subdir1/subdir2/subdir3
# cd /tmp/subdir1/subdir2/subdir3
# pwd
/tmp/subdir1/subdir2/subdir3
Wouldn’t it be nice to combine both mkdir and cd in a single command? Add the following to the .bash_profile and re-login.
$ vi .bash_profile
function mkdircd () { mkdir -p "$@" && eval cd "\"\$$#\""; }
Now, perform both mkdir and cd at the same time using a single command as shown below:
# mkdircd /tmp/subdir1/subdir2/subdir3
[Note: This creates the directory and cd to it automatically]
# pwd
/tmp/subdir1/subdir2/subdir3