How do I see a list of all exported variables and functions under Unix bash shell?
ow do I assign the output of a shell command to a shell variable under Unix like operating system? For example, I want to store the date command output to a variable called $now. How do you do that? How can I set a variable to the output of a command in Bash?
ow do I use export command under a Linux or Unix-like operating systems to set variables on a bash shell?
ow do I pass shell variables to awk command or script under Linux or UNIX-like operating systems? How do I use shell variables in an awk script? How can I allow awk to use shell variables?
Bash shell is used for various purposes under Linux. How do I customize the shell environment variable under Linux operating systems?
How do I call Oracle or MySQL sql statements in UNIX / Linux shell scripts?
How do I run shell loop over set of files stored in a current directory or specified directory?