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1

but i can use echo "$foo"a then why braces in used?

Rahul Patil
– Rahul Patil

2013-02-13 08:18:36 +00:00
Commented Feb 13, 2013 at 8:18
2

@RahulPatil Then there is no difference. " is an illegal character in a variable name, so it terminates there.

Chris Down
– Chris Down

2013-02-13 08:23:27 +00:00
Commented Feb 13, 2013 at 8:23
@RahulPatil But, with the braces you can do a lot more! See also the link provided by manatwork in the comment to your question.

Bernhard
– Bernhard

2013-02-13 08:55:48 +00:00
Commented Feb 13, 2013 at 8:55
3

There's no ambiguity in the first statement - It's clearly the value of the fooa variable. Bash is not DWIM-compatible :)

l0b0
– l0b0

2013-02-13 09:17:10 +00:00
Commented Feb 13, 2013 at 9:17
2

@l0b0 - perhaps I should have said "ambiguous to humans", obviously the actual syntax is defined ;-)

Chris Down
– Chris Down

2013-02-13 09:23:45 +00:00
Commented Feb 13, 2013 at 9:23

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