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echo command
How 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?
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Bash shell is used for various purposes under Linux. How do I customize the shell environment variable under Linux operating systems?
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How do I get the current date in Unix or Linux shell scripting and store it into a shell variable? How do I print the current date using Unix shell script?
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I need to call the function called foo() using echo command in the same statement. How do I all or invoke the function using the echo statement?
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I noticed that many shell scripts in /etc/init.d/ directory use the following syntax:
echo $“Usage $prog start|stop|reload|restart”
Why a double-quoted string preceded by a dollar sign ($”string”) using the echo command under Linux / UNIX bash scripts?
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