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How does the first dollar sign affect simple quotes in bash?
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How does the first dollar sign affect simple quotes in bash?
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I need to pass a string to a program as its argument from the bash cli, e.g
program "don't do this"
The string may include any character like '$', '\', etc. and i don't want BASH to do any modification. So i think about using single quotes.
However the following does not work:
program 'don\'t do this' //escape doesn't work in single quote
While the following two works:
program $'dont\'t do this' //seems fine, but any other side effects?
program 'dont'\''do this' //breaking into 3 parts
The first approach seems better in that it acquires less pre modification (put the dollar symbol in front and substitute every \ to \\), but i don't know what else the DOLLAR SIGN might do.
I've really googled this but i can't find what i need.. Thanks in advance.
It causes escape sequences to be interpreted.
$ echo $'Name\tAge\nBob\t24\nMary\t36'
Name Age
Bob 24
Mary 36
(And SO handles tabs in a goofy manner, so try this one at home)
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