Not equal to in Unix

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# 1  
Old 06-14-2011
Not equal to in Unix


I am trying to do below operation

	# do something

If the LAST_TRANSACTION variable is not equal to 1 or 2 or 3 then code inside the if block should be execute.

This code is not working, Any help is appreciated.
# 2  
Old 06-14-2011
LAST_TRANSACTION=2 if [[ $LAST_TRANSACTION -ne 1 -o $LAST_TRANSACTION -ne 2 -o $LAST_TRANSACTION -ne 3 ]]; then # do something fi
# 3  
Old 06-14-2011
To compare strings use "=" for equal and "!=" for not equal.

To compare numbers use "-eq" for equal "-ne" for not equal.
# 4  
Old 06-14-2011
Still I get a problem

I am using below code, what ever might be the LAST_TRANSACTION value, code inside the if block is execute.

if [[ $LAST_TRANSACTION -ne 1 || $LAST_TRANSACTION -ne 2 || $LAST_TRANSACTION -ne 3 ]]; then
echo hi

# 5  
Old 06-14-2011
Since its a or condition and always it will come to If condition Smilie change it to and condition and try
# 6  
Old 06-14-2011
Dude its an or condition so whatever may be the values it will go to if condition. Go for and condition
# 7  
Old 06-14-2011
if [[ $LAST_TRANSACTION -ne 1 && $LAST_TRANSACTION -ne 2 && $LAST_TRANSACTION -ne 3 ]]; then


if ! [[ $LAST_TRANSACTION -eq 1 || $LAST_TRANSACTION -eq 2 || $LAST_TRANSACTION -eq 3 ]]; then

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