Bash string formatting/substitution

Question

I have 2 variable in a bash script that look like this:

key='fox'

string='The quick brown jumps over the lazy dog'

I'd like to create a new variable where key is inserted between the words brown and jumps. How can I do this in bash? I was trying something like this, but I couldn't get it to work:

sentence='The quick brown ${key} jumps over the lazy dog'

The variable of sentence should be:

string='The quick brown fox jumps over the lazy dog'

ruakh · Accepted Answer · 2013-05-29 20:16:57Z

5

You can write:

sentence="The quick brown ${key} jumps over the lazy dog"

using double-quotes instead of single-quotes. (Parameter expansion, and all other substitutions, are disabled within single-quotes; see §3.1.2.2 "Single Quotes" in The Bash Reference Manual.)

answered May 29, 2013 at 20:16

ruakh

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