Which regular expression methods to validate input could be used in shell scripting?

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3 answers

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                              #!/bin/sh

    re="\/$"
    
    if [ $1 =~ $re ]; then
            echo "${ATTENTION_PREFIX}$1 DIRECTORY MAY NOT CONTAIN A \"/\" OR LITERAL SLASH!${ATTENTION_POSTFIX}"
            exit 1
    fi

Executing ./file.sh hello/ results in [: 29: hello: unexpected operator

It looks like that this regular expression method is incorrect for shell scripting.
                        

Asked by 030 (1588 rep)

Jul 4, 2014, 08:22 AM
Last activity: Oct 7, 2023, 05:05 PM

Which regular expression methods to validate input could be used in shell scripting?

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