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I have a file "host" with three columns in it like below and i tried below double FOR loop to print 1 column in one iteration. i use two/three ways but all fails with no error/output. please let me know where i am wrong. please suggest if there is any other way to do this.
file with 3 columns
a b c
a b c
a b c
a b c
a b c
.
.
.
method 1
for i in 1 2 3
do
for HOSTS in `awk -v var=$i '{print var}' host|grep -i VHL..WX|sed 's/^#//'`
do
echo $HOSTS
............
............
............
done
done
method 2
for i in 1 2 3
do
for HOSTS in `awk '{print var}' var=$i host|grep -i VHL..WX|sed 's/^#//'`
do
echo $HOSTS
............
.............
...............
done
done
Possibly, but cut requires exactly 1 char (in this case space) as the delimiter; awk uses any amt of contiguous whitespace, so a bit more flexible.
Without code tags we can't be sure of the data spacing
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