Scripting

6.6    Other Commands

To conclude this chapter, I want to briefly introduce you to a few more frequently used commands:

• aliasalias defines shortcuts. alias ll='ls -lh' allows you to run the frequently used ls -l -h command (to list files with detailed information and present the file size as human readable) in the ll short notation. Shortcuts are best specified in the .bashrc file so that they are permanently available.

• cat file cat file outputs a text file. The command is often combined with input or output redirection. For example, cat text1 text2 text3 > result joins three text files and saves the result in a new file.

  Cat > newfile is also particularly useful. This construct allows you to create a short new text file without launching ...