Ubuntu Unleashed 2013 Edition: Covering 12.10 and 13.04, Eighth Edition

Storing Shell Scripts for System-wide Access

After you execute the command myenv, you should be able to use ldir from the command line to get a list of files under the current directory and ll to get a list of files with attributes displayed. However, the best way to use the new commands in myenv is to put them into your shell’s login or profile file. For Ubuntu, and nearly all Linux users, the default shell is bash, so you can make these commands available for everyone on your system by putting them in the /etc/bashrc file. System-wide aliases for tcsh are contained in files with the extension .csh under the /etc/profile.d directory. The pdksh shell can use these command aliases, as well.

Note

To use a shell other than bash after logging in, ...