Shell script while loop inside a for loop

Question

with tcsh, I want to print "Hello" for each x,y, z, e, and f. But with the following script, it only prints x. Can someone tell me how to print "Hello" also for y, z, e, and f?

#! /bin/tcsh -f
set arr=(x y z e f)

set j = 0
foreach i ($arr)
echo $i
   while ($j < 5)

     echo "Hello"
     @ j++
    end
end

The result is:
x
Hello
Hello
Hello
Hello
Hello
y
z
e
f

you are only initializing the 'j' iterator variable to 0 one time. You need. to reinitialize the. variable to 0 inside the foreach loop. — j_b
– j_b, Commented May 16, 2022 at 21:21

Martin Tournoij · Accepted Answer · 2022-05-17 00:55:07Z

1

Move the initialization of the 'j' variable inside the foreach loop:

#! /bin/tcsh -f
set arr=(x y z e f)

foreach i ($arr)
    echo $i
    set j = 0
    while ($j < 5)
            echo "Hello"
            @ j++
    end
end

Output:

$ ./s.sh
x
Hello
Hello
Hello
Hello
Hello
y
Hello
Hello
Hello
Hello
Hello
z
Hello
Hello
Hello
Hello
Hello
e
Hello
Hello
Hello
Hello
Hello
f
Hello
Hello
Hello
Hello
Hello

edited May 17, 2022 at 0:55

Martin Tournoij

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answered May 16, 2022 at 21:26

j_b

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