Shell Programming and Scripting

guys, i need help

the file

[~]$ cat file1
1 2 3 4 5 6 7 8 9

my script

[~]$ cat nawk1
#!/bin/sh
echo "from column? :\c"
read c1
echo "until column? :\c"
read c2
cat file1 | nawk `{ print $c1, $c2 }`

result

[~]$ ./nawk1
from column? : 2
until column? : 5
2 5

the script is print the column c1 and c2

the question

i want the script is print from column c1 until c2 so the result is

from column? : 2
until column? : 5
2 3 4 5

can you help me guys?

every answers is very appreciated

many thanks

Hi,

try:

Code:

set -- 5 8
awk -v beg=$1 -v end=$2 '{for (i=beg;i<=end;i++)printf "%s", $i;printf "\n"}' file1

This should print from column 5 to 8.

Or you use cut:

Code:

cut -d" " -f ${1}-${2} file1

HTH Chris

hi christ,

the awk doesnt work but the cut works like a charm..... and it's very simple too.

thanks for the cut.

i am new with this shell scripting, so thanks for the help

Code:

echo "from line="
read f
echo "end line="
read e
nawk -v f="$f" -v e="$e" '{
  for(i=f;i<=e;i++)
	printf("%s ",$i)
  print ""
}' file