am a new to shell scripting. How do I check for NULL value in a Linux or Unix shell scripts?
ow do I store grep command output in shell variable? What is the syntax to store the command output into a variable in Linux or Unix? Continue reading “How to assign a grep command value to a variable in Linux/Unix”
ow do I read a text file line by line under a Linux or UNIX-like system using KSH or BASH shell?
How do I change user password using a shell script under FreeBSD operating systems?
How do I convert hex number to decimal number using a shell script under UNIX / Linux operating systems?
Q. How can I run a command called foo, and have it timeout / abort after 10 seconds under GNU/Linux running bash shell or script? How do I run command under an alarm clock?
had written lots of code in C for my school work and saved it as source code under /home/user/c/*.c and *.h. How do I find files by content such as string or words (function name such as main() under UNIX shell prompt?