CODEWITHSUNDEEP
shell
kpietru
kpietru

Reputation: 381

How to remove newline from output?

Hashing passwords in shell (sha512) breaks the line. How to get a result in one line?

The script for hashing:

password="abc123"
hashPassw="$(/bin/echo -n "${password}" | openssl dgst -binary -sha512 | openssl enc -base64)"
echo "${hashPassw}"

Output is (why breaks the line?):

xwtd2ev7b1HQnUEytxcMnSB1CnhS8AaA9lZY8DEOgQBW5nY8NMmgCw6UAHb1RJXB
afwjAszrMSA5JxxDRpUH3A==

Should be one line:

xwtd2ev7b1HQnUEytxcMnSB1CnhS8AaA9lZY8DEOgQBW5nY8NMmgCw6UAHb1RJXBafwjAszrMSA5JxxDRpUH3A==

Upvotes: 24

Views: 33969

Answers (3)

Hasni Mehdi
Hasni Mehdi

Reputation: 656

To remove the new line in openssl use the flag -A.

Example:

echo "password" | openssl base64 -A

Upvotes: 1

James
James

Reputation: 4737

From the OpenSSL Wiki for enc.

To suppress this you can use in addition to -base64 the -A flag. This will produce a file with no line breaks at all.

So adding the additional -A flag will do the trick.

password="abc123"
hashPassw="$(/bin/echo -n "${password}" | openssl dgst -binary -sha512 | openssl enc -A -base64)"
echo "${hashPassw}"

Which outputs

xwtd2ev7b1HQnUEytxcMnSB1CnhS8AaA9lZY8DEOgQBW5nY8NMmgCw6UAHb1RJXBafwjAszrMSA5JxxDRpUH3A==

Upvotes: 30

DevSolar
DevSolar

Reputation: 70263

Why do you think it should be one line? Base64 does wrap lines.

If you insist, your question boils down from "SHA512 SSL Base64 whatever" to "how do I remove newlines", for which there are many ways,

tr -d '\n'

being only one of them.

Upvotes: 14

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