Bash variables: case sensitive or not?

Question

Is Bash shell scripting case sensitive?

Is variable date the same as DATE?

You could just try setting both and see if they remain distinct. — chepner
– chepner, Commented Mar 22, 2013 at 13:47
date, Date, dAte, DAte, daTe, DaTe, dATe, DATe, datE, DatE, dAtE, DAtE, daTE, DaTE, dATE, DATE are all different variables ;) — anishsane
– anishsane, Commented Mar 22, 2013 at 14:21
Why did this get down-voted? The question is a bit ambiguous indeed but it's acceptable for someone new to BASH. — Pithikos
– Pithikos, Commented Aug 28, 2014 at 10:03
It's not a real question because simply trying it would have been quicker than phrasing it ... @Pithikos — tink
– tink, Commented Nov 16, 2017 at 16:22
The fact that someone can verify this immediately having bash doesn't mean that this question is not valid. — kubal5003
– kubal5003, Commented Nov 16, 2017 at 16:34

John Kugelman · Accepted Answer · 2013-03-22 13:36:40Z

76

Yes, it is case sensitive, just like the rest of UNIX. $date and $DATE are two different variables. makefile and Makefile are two different files. -h and -H are two distinct flags (usually).

answered Mar 22, 2013 at 13:36

John Kugelman

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2 Comments

chepner Over a year ago

Rather, -h and -H are always distinct, but may be interpreted identically by the program that accepts them.

user3064538 Over a year ago

macOS's (and maybe Windows's?) filesystem is case-insensitive so makefile and Makefile are the same file there.

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