Remove newline from openssl base64 encode string?

Question

echo -n 'HelloWorld' | openssl base64 | pbcopy

That command give me a newline after paste it.

I thought the -n removed the newline but don't remove when use base64.

so how can get my output string without a newline?

Solution

I'm sure there's simpler ways to do it, but here I'm using awk with output record separator blank. Being there only one record separator, the result will be blank. Now, I can test if there is newline or not by running output to file and cat -A that file to show metacharacters.

$ printf 'Hello World' | openssl base64 | awk 'BEGIN{ORS="";} {print}' > tester.txt

$ cat -A tester.txt
SGVsbG8gV29ybGQ=

As you can see, there is no $ sign at the end of that string, hence no new line.

Comments

[muru]

If the output is base64 encoded, what difference does a newline make? Anyway, you can just delete newlines using tr: echo -n ... base64 | tr -d '\n' | pbcopy. Are you using OSX?

[user779848]

1) I want avoid the newline because affect the output, I mean I need the output clean, I use base64 to create passwords, so when paste with newline of course give an alert of wrong password. 2) yes Im on OSX 3) now works with echo -n 'HelloWorld' | openssl base64 | tr -d '\n' | pbcopy

[muru]

Then you're doing it wrong. No sane base64 decoder will care about newlines.

[user779848]

works like this: echo -n 'helloworld' | openssl base64 | tr -d '\n' | pbcopy

[muru]

Questions on OSX should be posted on Ask Different or Unix & Linux. (yes, that's how it works).

[user779848]

ouch! sorry, Im new and can't find the mac channel, thank you; is possible move this or delete? well I got my answer thank you

[Sergiy Kolodyazhnyy]

I'm voting to close this question as off-topic because OP uses software not found in Ubuntu but rather in Mac OS X

[redochka]

@muru in a telnet session (while debugging) the new line will trigger data sending

[Jason Ryan Taylor]

this is actually pretty simple if you use printf:

[Jason Ryan Taylor]

echo "some long string" | base64 | while read line; do printf $line; done

[Fabby]

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