Variable length in Shell

[dayananda.ms]

Hi,

How to find the variable length in Shell.
Ex:

var=string

the 'var' contains "string" of 6 char. so length is 6.

[GNU-Fan]

Feed it to the wc command.

[fiomba]

With a little googling on "bash variable length"...

 Using the ${#VAR } syntax will calculate the number of characters in a variable.

[signmem]

expr length $string

[WuNMOjTIQanXWBcH]

How to find the variable length in Shell.
Ex:

var=string

the 'var' contains "string" of 6 char. so length is 6.

I think itʼs worth noting that your question leaves open an important question: what is your definition of length?

If you are refering the the byte length, then

$> echo -n "strüng" | wc -c
7
$> expr length "strüng"
7

will give you the right answer, just as according to «GNU-Fan» and «fiomba».

If your definition of length is equivalent to the amount of intedended characters, then

$> echo -n "strüng" | wc -m
6
$> var="strüng"; echo ${#var};
6

will give you the expected answer (of course either of both commands depend on the LANG[UAGE] respectively LC_ALL environment variables), as already mentioned by «GNU-Fan» and «signmem».