how to control the value at the loop's end

Asked Apr 23 '15 at 18:40

Active Apr 23 '15 at 18:40

Viewed 49 times

I have gone through various sources but could not able to understand how to implement such as Bash - propagate value of variable to outside of the loop.

I have Array which contains string and each string is use for making directories. Inside the loop everything is going fine but outside the loop the value is lost. i mean echo $b is not printing. here is my code

#!/bin/bash
#skipped portion of code
#......
#......
b=$(mkdir fff)
Array[0]="the"
Array[1]="world"

for i in "${!Array[@]}"
do
    echo $i
    b="$(mkdir  -p "$b/$v")"
done <<< "$b"
echo "$b"  // does not printing

edited May 23 '17 at 12:14

Community

asked Apr 23 '15 at 18:40

dell pk

What are you expecting `mkdir` to return? Why are you using `<<< "$b"` when nothing in the loop reads from standard input? – Etan Reisner Apr 23 '15 at 18:43
What do you think `$b` should print? `mkdir -p` doesn't give any output. – anubhava Apr 23 '15 at 18:44
You store output of mkdir command in b , but mkdir returns nothing – Andrey Sabitov Apr 23 '15 at 18:45
well you are right but i am luck it did nt effected mt whole code. then how can i copy whole path of created directory? – dell pk Apr 23 '15 at 18:55
so topic changes how shell i save path in variable? – dell pk Apr 23 '15 at 19:02
You already have path as `"$b/$v"` – anubhava Apr 23 '15 at 19:03
but they are not storing in variable e.g c="$b/$v"... – dell pk Apr 23 '15 at 19:08
oh ok it starts working but it is not showing output like a/b/c. it is showing like a b c – dell pk Apr 23 '15 at 19:12
`unset IFS; echo "$b/$v"` – anubhava Apr 23 '15 at 19:27
can i write like this also unset IFS; c="$b/$v" ? – dell pk Apr 23 '15 at 19:38

how to control the value at the loop's end

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