CODEWITHSUNDEEP
bashif-statement
user2990773
user2990773

Reputation: 33

detecting multiple files in a if statement

i have the following bash code written to detect if a SSL certificate exists and if so to skip the creation of one.

i need to expand the list of detected files, so that the presence of any of them will skip the creation of the SSL certificate.

the full list of files are "trailers.cer" or "trailers.key" or "trailers.pem"

An alterntaive approach is after detection, prompt the user asking if they want to create SSL certifictes

file="assets/certificates/trailers.cer"
if [ -f "$file" ]; then
echo 'SSL Certificates already created' 
else
openssl req -new -nodes -newkey rsa:2048 -out ./assets/certificates/trailers.pem -keyout ./assets/certificates/trailers.key -x509 -days 7300 -subj "/C=US/CN=trailers.apple.com"
openssl x509 -in ./assets/certificates/trailers.pem -outform der -out ./assets/certificates/trailers.cer && cat ./assets/certificates/trailers.key >> ./assets/certificates/trailers.pem
fi

Upvotes: 1

Views: 99

Answers (2)

tripleee
tripleee

Reputation: 189357

Assuming it's sufficient to exit the entire script,

for file in trailers.cer trailers.key /assets/certificates/trailers.pem; do
    test -f "$file" && exit 1 # or even 0?
done
# If you reach through here, none existed

I changed one of the items to an absolute path just to show how it's done. If the path is the same for all of the files, you could refactor to supply the path later instead; test -f "/assets/certificates/$file"

Upvotes: 2

janos
janos

Reputation: 124646

You could put multiple conditions in the if using multiple test and || like this:

if test -f "$path1" || test -f "$path2" || test -f "$path3"; then
    ...
fi

When there are many files, using an array can be easier and more readable, like this:

#!/bin/bash

basedir=assets/certificates
files=(trailers.cer trailers.key trailers.pem)

found=
for file in ${files[@]}; do
    path="$basedir/$file"
    if [ -f "$path" ]; then
        echo SSL Certificates already created
        found=1
        break
    fi
done

if test ! "$found"; then
    openssl req -new -nodes -newkey rsa:2048 -out ./assets/certificates/trailers.pem -keyout ./assets/certificates/trailers.key -x509 -days 7300 -subj "/C=US/CN=trailers.apple.com"
    openssl x509 -in ./assets/certificates/trailers.pem -outform der -out ./assets/certificates/trailers.cer && cat ./assets/certificates/trailers.key >> ./assets/certificates/trailers.pem
fi

Upvotes: 1

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