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Select variable within a if statement

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# 1  
Old 05-25-2010
Select variable within a if statement
i want to select a variable created and use it in a if statement, but not getting the desired results

Code:
LINE='device for 0101a01: lpd://172.25.41.111:515'
prt=`echo $LINE | awk '{print $3 }' | cut -c 1-7`
echo $prt

My if statement to select just what i want..
Code:
IFS=$":"
while read prt drv IP port
do
  if [ -z "$prt" = "0117bd1" ]; then
      echo " Adding printer $prt: !!!!"
done

# 2  
Old 05-25-2010
Just try with

Code:
if [ "${prt}" == "0117bd1" ]


cheers,
Devaraj Takhellambam
# 3  
Old 05-25-2010
I tried , but its not giving me just the printer name , because that is what i actually just need.
My variable if tested gives me just that.
Code:
+ cut -c 1-7
+ awk {print $3 }
prt=0101a01
+ echo 0101a01
0101a01

Giving me the full details instead of just the cut as per my variable
Code:
+ IFS=$:
+ 0< diffs.txt
+ read prt drv IP port
+ [ device for 0117bd1 == 0117bd1 ]

Any other suggestions...
# 4  
Old 05-25-2010
try:
Code:
prt=$( echo $LINE | awk -F "[ :]" '{print $3'})

with:
Code:
if [ "${prt}" == "0117bd1" ]

use this if using ksh
Code:
if [ "${prt}" = "0117bd1" ]

# 5  
Old 05-25-2010
Hi.

You could do it this way:

1. Remove IFS=$:
2. Change the read to
Code:
read blah blah prt drv IP port

3. Change the if to
Code:
if [ "$prt" = "0117bd1:" ]

or
Code:
if [ "${prt%:}" = "0117bd1" ]

# 6  
Old 05-25-2010
Quote:
You could do it this way:

1. Remove IFS=$:
2. Change the read to
Code:
read blah blah prt drv IP port

3. Change the if to
Code:
if [ "$prt" = "0117bd1:" ]

or
Code:
if [ "${prt%:}" = "0117bd1" ]

I tried all of these with no success...
herewith is output received with 1st option
Code:
+ 0< diffs.txt
+ read prt drv IP port
+ [ device = 0117bd1: ]
+ read prt drv IP port
+ [ device = 0117bd1: ]
+ read prt drv IP port
+ [ device = 0117bd1: ]

second option:
Code:
+ 0< diffs.txt
+ read prt drv IP port
+ [ device = 0117bd1 ]
+ read prt drv IP port
+ [ device = 0117bd1 ]
+ read prt drv IP port
+ [ device = 0117bd1 ]
+ read prt drv IP port

Last edited by Scott; 05-25-2010 at 05:30 AM.. Reason: Fixed QUOTE tag
# 7  
Old 05-25-2010
Hi.

Better if you show your script and not just the set -x output...
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