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shell if "-z"

RicHincapie answered on July 26, 2021 Popularity 9/10 Helpfulness 4/10

answer shell if "-z"

related if -z in bash

shell if "-z"

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# Returns true if string empty.
# E.G: file.txt does not exist

EXISTS=$(cat file.txt 2> /dev/null)

if [ -z "${EXISTS}" ]; then
	echo "Does not exist"
else
    echo "Exist!"
fi

# Output: 
# Does not exist

Popularity 9/10 Helpfulness 4/10 Language shell

Source: Grepper

Tags: shell

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Contributed on Jan 14 2022

RicHincapie

0 Answers Avg Quality 2/10

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if -z in bash

Comment

The -z flag causes test to check whether a string is empty. 
Returns true if the string is empty, false if it contains something.

Popularity 10/10 Helpfulness 5/10 Language shell

Source: Grepper

Tags: bash

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Contributed on Jul 26 2021

Devops Captain

0 Answers Avg Quality 2/10

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shell if "-z"

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if -z in bash

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