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Operating Systems Solaris String Comparison in Shell script
# 1  
Old 01-29-2010
String Comparison in Shell script
I Have a script which gets the status of oracle database and if the status is READ WRITE ..it should echo "db is up " else "db is down"

Here is the code

Code:
if [ "$status" = "READ WRITE" ]
then
  echo "db up"
else
  echo "db down"
fi
done;


The script is giving me out put "db down" even thoug the value of variable status is READ WRITE.
Last edited by Franklin52; 01-29-2010 at 01:25 PM.. Reason: Correcting code tags
# 2  
Old 01-29-2010
Try "==" and see if the space between READ and WRITE is indeed a space, not a tab or something.
# 3  
Old 01-29-2010
Tried putting "==" no progress. There is a space between "READ WRITE"
# 4  
Old 01-29-2010
before 'if' put:

Code:
echo "x${status}x"
echo "xREAD WRITEx"

and see if they are the same.
# 5  
Old 01-29-2010
Hello Friend,

I think you reply was in the right direction to fix the problem in the code..This is what i am geting after echoing those 2 values


Code:
 
x{
READ WRITE}x
 
xREAD WRITEx

That means my variable $status has READ WRITE with some space on the front..thats why its unable to compare..can you please tell me how can i get rid of those spaces

Thankyou somuch for you help
# 6  
Old 01-29-2010
See:

Code:
echo -e "bla\nbla" | tr -d '\n'

The following:
Code:
tr -d '\n'

will remove any newlines from input.
# 7  
Old 01-29-2010
I tried this..
what happens is if i run it on the command prompt (outside) script it works fine..But in the script its not removing spaces

Code:
 
echo -e "   READ WRITE"|tr -d '\n'
READ WRITE


Code:
 
new_status=`echo -e "$status"|tr -s '\n'`
echo "x{$new_status}x"
echo "xREAD WRITEx"
 
x{-e READ WRITE}x
xREAD WRITEx



---------- Post updated at 12:08 PM ---------- Previous update was at 12:05 PM ----------

Buddy,

I removed the -e and it works wonders...Gr8 help i was struggling with this since morning Smilie
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