Bash Tip – Separate a Bash Variable From Surrounding Letters

Sometimes, you might find yourself needing to concatenate the value of a bash variable with a string.
I think it’s best demonstrated with (a somewhat artificial) example:

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2
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y=h
echo $yome #won't work. will print the value of the variable "yome" which is a null string (since it's not set)
echo ${y}ome #works. will print "home"

That’s it, the trick is to use the curly brackets ${var} to separate the variable from its surrounding.

Have fun ;-)

source: @bashcookbook

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Saturday, April 24th, 2010 Bash

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My name is Amir Watad. I have a BSc. in biomedical engineering from The Biomedical Engineering school , Technion , Israel, and a BSc. in electrical engineering from The Electrical Engineering school , Technion , Israel.
I'm a Verification Engineer in Mellanox Technologies Ltd.
I love Linux, the Command Line and the OpenSource Community.
I used to write Poems (Arabic) when I was able to find time for this.

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