Sed is a UNIX stream editor that can be used to filter text files. This can be extremely useful if you have to run a Find and Replace on a string of text across a large file. I find this to be much more efficient than using a Find and …
What is the command to list linux users?
cat /etc/passwd | grep /home | cut -d: -f1 from http://www.linuxquestions.org/questions/linux-newbie-8/what-is-the-command-to-list-users-367164/
.bash_login in osx è .profile
.profile è in osx equivalente a .bash_login