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Linux Shell Scripting with Bash Ken O. Burtch
Publisher: Sams

Whiptail Installation: Open the terminal and type following command to install whiptail: sudo apt-get install whiptail. The shell script contains password, and I don't want others who have execute access to view the shell script and get the password. Here is the code for the script in question. Here's a handy trick that really saved me today -. Use -x and -v switches to get more insight into what BASH is doing. The first command replaces characters that are not letters with newlines. This also help us find why our program didn't run if there is any issue. Debugging a Linux BASH shell script. Running the bash script in debug mode help us understand what is going on in the script before getting the output. Debugging shell scripts is really a PITA. The script is written in Linux Bash shell #!/bin/bash #Author: Surendra Anne([email protected]) #Purpose: To convert any video file into a GIF image file. Q: How do I encrypt my bash shell script on Linux environment? This simple script was created to demonstrate the ability of the Bash shell to find the frequency of words in a text file.