shelltcsh

Shell script while loop inside a for loop

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

Solution

  • 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