BASH: replace string like in javascript

Question

I have a variable in a Bash script, and I want to replace all occurrences of / in it with _ and all occurrences of + with -; and I want to remove all occurrences of =. So, if this were JavaScript, something like this:

str = str.replace(/\//g, "_").replace(/\+/g, "-").replace(/=/g, "");

How can I do this in Bash.

@Hitmands Not strictly a dupe, as this question is about character translation (tr territory) whereas the proposed dupe is about longer strings (sed territory, though certainly the y%/+/_-/ command of sed could come in handy here as well). — tripleee
– tripleee, Commented Dec 11, 2015 at 14:11

anubhava · Accepted Answer · 2015-12-10 18:15:15Z

1

You can do this in BASH:

s='my/String+One=Two'
s="${s//\//_}"
s="${s//+/-}"
s="${s//=/}"
echo "$s"
my_String-OneTwo

answered Dec 10, 2015 at 18:15

anubhava

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tripleee · Accepted Answer · 2015-12-10 18:26:29Z

1

echo "$string" | tr '/+''_-' | tr -d '='

answered Dec 10, 2015 at 18:26

tripleee

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