UNIX for Beginners Questions & Answers

#!/bin/bash 
n=$l; typeset -a v
x=$(< input.dat)
check(){
if[$l -le 5 -a $l -gt 2]; then
sed 's/Test/Proc/g' file.sh >fl.sh
else
 exit 13
fi
}
check $n
while [$x -ge $n]; do
 x=`expr $x -l`
v[$x]=$x
done
less fi.sh l>/dev/null&& echo yes || exit 1
echo v= ${v[*]}
exit 0

x=$(< input.dat)

check $n

less fi.sh l>/dev/null&& echo yes || exit 1

file.sh 3

#!/bin/bash 
n=$l; typeset -a v                   # as l is undefined, n will assume the empty string value
x=$(< input.dat)
check(){
if[$l -le 5 -a $l -gt 2]; then       # spaces missing around the square bracket; l undefined, again
sed 's/Test/Proc/g' file.sh >fl.sh   # modifies file.sh and prints this to fl.sh, never to be used any more
else
 exit 13
fi
}
check $n
while [$x -ge $n]; do                # spaces missing around the square bracket;  
 x=`expr $x -l`                      # spaces missing around the minus sign; 
v[$x]=$x                             # might work if $x is a single number
done
less fi.sh l>/dev/null&& echo yes || exit 1
echo v= ${v[*]}
exit 0

< input.dat

< input