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I have a configuration file in which I want to check if the the key value pair are present as below and I want them to be a exact match.

key=value xxxxx xxxx

After the key value there can be a space or a tab as shown in the above so I cannot use a simplegrep -q for getting the key value pair.

Can someone please help me with this

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  • This might be helpful. Commented Mar 2, 2020 at 3:08
  • fmt -1 ConfigFile | grep -qxF 'key=value' or grep -q '^key=value$ ConfigFile or grep -qE '^key=value([ \t].*)?$' ConfigFile depending on what you want to happen if you find space/tab Commented Mar 2, 2020 at 4:00
  • @jhnc the above command works for me thank you very much. If possible can you please post it as an answer. Commented Mar 2, 2020 at 5:09

2 Answers 2

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Script like this can extract the value:

awk '/key/ {split($1,a,"=");print a[2]}' input_file

or with variable

KEY="key"
awk -v key=$KEY '$1 ~ key {split($1,a,"=");print a[2]}' input_file
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The below command worked out for me as suggested by @jhnc

sudo fmt -1 FILEPATH | grep -qxF 'KEY=VALUE'

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