Howto: Call Shell Script function In echo statement

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?

You can define a function using the following syntax:

foo(){
    date
}

Now you can call the function foo() using the echo statement as follows:

echo "Today is $(foo)"

Sample outputs:

Today is Sat Jan 22 00:27:26 IST 2011

A sample shell script to display system info:

#!/bin/bash
findcpu(){
	grep 'model name' /proc/cpuinfo  | uniq | awk -F':' '{ print $2}'
}
 
findkernelversion(){
	uname -mrs
}
 
totalmem(){
	grep -i 'memtotal' /proc/meminfo | awk -F':' '{ print $2}'
}
 
echo "CPU Type : $(findcpu)"
echo "Kernel version : $(findkernelversion)"
echo "Total memory : $(totalmem)"

See also:


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🐧 4 comments so far... add one

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4 comments… add one
  • amke Apr 22, 2011 @ 16:11

    Cool, exactly what I was looking for.
    Thanx!

  • Vivek May 1, 2012 @ 12:41

    Good one, Helpful Thanks!!

  • hrg Feb 4, 2013 @ 11:14

    Wonderful, thanks!

  • Santanu Oct 9, 2015 @ 9:48

    cool.. short and good…thx

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