CODEWITHSUNDEEP
linuxbashshellshlinux-mint
user14729778
user14729778

Reputation:

Validate .sh files header

How do i validate every .sh file in a specified directory which ends .sh to make sure the first line is #!/bin/bash?

I want the output for each file to be either filename.sh is valid or filename.sh is missing the header.

Upvotes: 0

Views: 420

Answers (2)

dash-o
dash-o

Reputation: 14491

Consider also pure-bash solution. It does not call any other process.

Note that a valid file may contain spaces between the #! and the /bin/bash.

#! /bin/bash
PAT="^#! */bin/bash"
for file in *.sh ; do
    line=
    read line < $file
    if [[ "$line" =~ $PAT ]] ; then
        echo "$file is valid"
    else
        echo "$file is missing the header"
    fi
done

If you need to support other interpreters (e.g., bin/sh), you can expand the pattern to include other shells with

PAT="#! *(/bin/bash|/bin/sh)"

Upvotes: 1

Shawn
Shawn

Reputation: 52589

Maybe something like

awk 'FNR == 1 { if ($0 == "#!/bin/bash") {
                   print FILENAME, "is valid"
                } else {
                   print FILENAME, "is missing the header"
                }
                nextfile
     }' *.sh

Upvotes: 0

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