#!/bin/bash # wh-loopc.sh: Count to 10 in a "while" loop. LIMIT=10 a=1 while [ "$a" -le $LIMIT ] do echo -n "$a " let "a+=1" done # No surprises, so far. echo; echo # +=================================================================+ # Now, repeat with C-like syntax. ((a = 1)) # a=1 # Double parentheses permit space when setting a variable, as in C. while (( a do echo -n "$a " ((a += 1)) # let "a+=1" # Yes, indeed. # Double parentheses permit incrementing a variable with C-like syntax. done echo # C programmers can feel right at home in Bash. exit 0
