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Shell Programming and Scripting

Simple awk

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# 8  
Old 07-29-2013
What were you expecting the command:
Code:
""

to do on line 7 in your script ( then "")?
# 9  
Old 07-29-2013
I have resorted to that odd looking
Code:
then ""

because I could not get
Code:
if [ ! -e $FILENAME ];

this statement working...
# 10  
Old 07-29-2013
Quote:
Originally Posted by liv2luv
I have resorted to that odd looking
Code:
then ""

because I could not get
Code:
if [ ! -e $FILENAME ];

this statement working...
In case you haven't noticed, this isn't working either. That is what is producing the diagnostic:
Code:
./show-log.sh[8]: : cannot execute [Is a directory]

Please show us the exact output you get from running the following script:
Code:
#!/bin/ksh
echo "$PWD"
uname -a
ls -l /bin/ksh EnginePerformance.log
## This script is to view the wanted values in EnginePerformance Log for both Request and Response logs from message broker.
FILENAME="EnginePerformance.log"

## Check if the file exist
if [ ! -e "$FILENAME" ]
then
        echo "$FILENAME does not exist!"
        exit 1
fi
echo "$FILENAME exists."

# 11  
Old 07-30-2013
Following is the output of the above code:

Code:
/usr/bfa/ltb/rqpt/orange/logs
Linux lkcmsxmbltb4.uskcmtb.amrs.xyz.com 2.6.32-358.11.1.el6.bz976915.bz956979.1.x86_64 #1 SMP Wed Jul 3 14:56:47 EDT 2013 x86_64 x86_64 x86_64 GNU/Linux
lrwxrwxrwx 1 root root     21 Feb 11 09:58 /bin/ksh -> /etc/alternatives/ksh
-rw-rw---- 1 mqsi unixuser  0 Jul 30 11:23 EnginePerformance.log
EnginePerformance.log exists.

Last edited by liv2luv; 07-30-2013 at 02:30 PM.. Reason: Only modified the DNS name of the server to .xyz.
# 12  
Old 07-30-2013
It's working -- it does exist. It's empty, but that's not what you asked the shell for...

If you want to check if it's empty too, -s is true on nonempty files:

Code:
if [ -e "$FILENAME" ] && [ -s "$FILENAME" ]
then
        echo "File exists and has contents"
else
        echo "File is empty or missing"
fi

# 13  
Old 07-30-2013
Quote:
Originally Posted by liv2luv
Following is the output of the above code:

Code:
/usr/bfa/ltb/rqpt/orange/logs
Linux lkcmsxmbltb4.uskcmtb.amrs.xyz.com 2.6.32-358.11.1.el6.bz976915.bz956979.1.x86_64 #1 SMP Wed Jul 3 14:56:47 EDT 2013 x86_64 x86_64 x86_64 GNU/Linux
lrwxrwxrwx 1 root root     21 Feb 11 09:58 /bin/ksh -> /etc/alternatives/ksh
-rw-rw---- 1 mqsi unixuser  0 Jul 30 11:23 EnginePerformance.log
EnginePerformance.log exists.

OK. So it looks like if [ ! -e filename ] is working as expected. What made you think it wasn't working?
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