Thursday, February 9, 2012

Unix Tools - More about Quotes

There are three types of quotes
Quotes
Name
Meaning
"
Double Quotes
"Double Quotes" - Anything enclose in double quotes removed meaning of that characters (except \ and $).
'
Single quotes
'Single quotes' - Enclosed in single quotes remains unchanged.
`
Back quote
`Back quote` - To execute command
Example:
$ echo "Today is date"
Can't print message with today's date.
$ echo "Today is `date`".
It will print today's date as, Today is Tue Jan ....,Can you see that the `date` statement uses back quote?

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