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Old 07-29-2010, 05:54 AM   #1
chirayu11
LQ Newbie
 
Registered: Jul 2010
Posts: 8

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If Condition with logical AND


I have got 6 strings:
parentFName, parentLName, parentPostcode
nextFName, nextLName, nextPostcode

In my If Condition, I would like to test if:
(parentFName equals nextFName) & (parentLName equals nextLName) & (parentPostcode equals nextPostcode)

Currently, I have this as my IF Condition but it does not work (it evaluates to false wrongly):

if [ \( \( "$parentFName" = "$nextFName" \) -a \( "$parentLName" = "$nextLName" \) \) -a \( "$parentPostcode" = "$nextPostcode" \) ]
then echo matches
else echo does not match
fi

One more question: is it the backslash (\) that I use to continue on the next line if my command is too long?

Any help, would be greatly appreciated.
Thanks
 
Old 07-29-2010, 06:08 AM   #2
i92guboj
Gentoo support team
 
Registered: May 2008
Location: Lucena, Córdoba (Spain)
Distribution: Gentoo
Posts: 4,040

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We have no idea what language are you speaking about. Because of the backslash thing and some syntactic elements I infer that it's some kind of shell scripting language. In bash, you would do:

Code:
foo=1
bar=2
if [ "$foo" = "1" ] && [ "$bar" = "2" ]; then echo we have a match; fi
And yes, the backslash can be used to escape the end of line so it doesn't get interpreted by your shell (and hence, the command continues on the next line).

Details might vary depending on the concrete shell language you use.
 
Old 07-29-2010, 06:17 AM   #3
chirayu11
LQ Newbie
 
Registered: Jul 2010
Posts: 8

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Thanks i92guboj

I was indeed referring to bash in my post earlier.

You have cleaned up the confusion. Thanks again.
 
  


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