Advanced_Bash-Scripting_Guide_v5.1_(Mendel.Cooper.2008)

Bash_Cookbook_(OReilly.2007)

Shell_Scripting_Recipes_A_Problem_Solution_Approach_Experts_Voice_in_Open_Source_(APress.2005)

Learning_the_bash_Shell,_3rd_Ed_(O'Reilly.2005)