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How TO: if [ Not Equals ] - Solaris 8

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# 1  
Old 05-18-2010
How TO: if [ Not Equals ] - Solaris 8
Hi,
I have the following script which runs well :-

Code:
ls -l /etc/*.txt > /dev/null 2>&1

if [ $? -eq 0]; then
  "Success"
fi

But, if I try,
Code:
if [ $? -ne 2]; then
  "Success"
fi

Does not works !

Even,

Code:
if [ $? != 2]; then
  "Success"
fi

Does not works !

How do I check for NOT EQUALS ?
Last edited by angshuman_ag; 05-18-2010 at 04:12 PM.. Reason: Formatting
# 2  
Old 05-18-2010
Try this ..
Code:
ls -l /etc/*.txt > /dev/null 2>&1; result=$?

# check result
if [ $result -ne 0 ]; then
  echo "command failed "
else
  echo "command succeeded "
fi

If you are bent on using "Success" and -ne together, you can try

Code:
ls -l /etc/*.txt > /dev/null 2>&1
if [ ! $? -ne 0 ]; then
  "Success"
fi

Last edited by kchinnam; 05-18-2010 at 05:25 PM.. Reason: correcting syntax
This User Gave Thanks to kchinnam For This Post:
angshuman_ag
# 3  
Old 05-18-2010
Code:
ls -l /etc/*.txt > /dev/null 2>&1

if [ $? -eq 0]; then
  "Success"
fi

I wouldn't say it runs well, it most likely returns an error.
you need a space between the test and the bracket ]
and if you're wanting to print "Success" you need an echo statement.
i.e.

Code:
if [ $? -eq 0 ]; then
echo "Success"

What is it that you are expecting the 2 to do?
this is a return code, not a count of the number of files found.

If however you want it to notify if it doesnt find *.txt

Code:
if [ $? -eq 1 ]; then
echo "No files found"

# 4  
Old 05-18-2010
There must be a space before the closing bracket:
Code:
if [ $? != 2 ]; then

instead of:
Code:
if [ $? != 2]; then

# 5  
Old 05-18-2010
Quote:
Originally Posted by kchinnam
Try this ..
Code:
ls -l /etc/*.txt > /dev/null 2>&1; result=$?
 
# check result
if [ $result -ne 0 ]; then
  echo "command failed "
else
  echo "command succeeded "
fi

If you are bent on using "Success" and -ne together, you can try

Code:
ls -l /etc/*.txt > /dev/null 2>&1
if [ ! $? -ne 0 ]; then
  "Success"
fi

Taking the value into a variable worked ! Thanks
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