for/while

jkl_jkl · #1 (**permalink**) 06-04-2008

This is an example of one of my requirement:

Code:

$ cat any
A C F
D 4
A F C V

A)

$ while read line
> do
> echo $line
> done < any

A C F
D 4
A F C V

B)

$ for line in `cat any`
> do
> echo $line
> done

A
C
F
D
4
A
F
C
V

Using "for" how can I achieve the same output as while offers(A) ?

siba.s.nayak · #2 (**permalink**) 06-04-2008

while read line
do
echo $line
done < any

for i in 1 2 3
do
head -$i any | tail -1
done

Franklin52 · #3 (**permalink**) 06-04-2008

Try something like this:

Code:

OIFS=$IFS
IFS=""

for line in `cat any`
do
  echo $line
done

IFS=$OIFS

But I should go for the first example without cat.

Regards

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