Shell Programming and Scripting

1234
234
432
1235
123

f=/tmp/test 
for i in `cat $f`
do
.
.
done

awk 'END{print c}{c+=$0}' /tmp/test

while read N; do ((S+=N)); done </tmp/test; echo $S

$ ruby -00 -ne 'p $_.split.inject(0){|x,y| x.to_i+y.to_i }' file
3258

$ 
$ 
$ cat f21
1234
234
432
1235
123
$ 
$ 
$ perl -lne '$x+=$_}{print $x' f21
3258
$ 
$ 

z=0

while read p
do
 z=$(( $z + $p ))
done </tmp/test 

echo $z