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Join Date: Oct 2007
Posts: 22
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Newbie Poster
Compare two dates using Shell Programming Hi all,
a=2007-05-10
b=2007-06-10
These are the two given dates and I need to compare.
The script should first compare years.If both are same or if a is lesser than b,it should print correct.If a is greater than b,then it should print error.Similarly for the dates(05 and 06).
No need to check for the months(10)
Regards
Dave Nithis
a=2007-05-10
b=2007-06-10
These are the two given dates and I need to compare.
The script should first compare years.If both are same or if a is lesser than b,it should print correct.If a is greater than b,then it should print error.Similarly for the dates(05 and 06).
No need to check for the months(10)
Regards
Dave Nithis
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Join Date: Feb 2006
Posts: 1,509
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Rep Power: 10
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are you using ksh or bash? if so
The comparison parts you can do yourself.
set -A aArray `print "$a" | sed -e 's/-/ /'`
set -A bArray `print "$b" | sed -e 's/-/ /'`
# now ${aArray[0]} and ${bArray[0]} contain the year
# and ${aArray[1]} and ${bArray[1]} contain the day
# and ${aArray[2]} and ${bArray[2]} contain the monthThe comparison parts you can do yourself.
Last edited by masijade : Oct 26th, 2007 at 9:57 am. Reason: Oops, wrong var names in the comments
Java Programmer and Sun Systems Administrator
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Debugging is twice as hard as writing the code in the first place. Therefore, if you write the code as cleverly as possible, you are, by definition, not smart enough to debug it.
--Brian Kernighan
----------------------------------------------
Debugging is twice as hard as writing the code in the first place. Therefore, if you write the code as cleverly as possible, you are, by definition, not smart enough to debug it.
--Brian Kernighan
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Join Date: Oct 2007
Posts: 22
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Newbie Poster
I am new to this shell scripting..
Can you give me the comparision part also
Regards
Dave Nithis
Can you give me the comparision part also
Regards
Dave Nithis
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Join Date: Feb 2006
Posts: 1,509
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Solved Threads: 136
At the top of this forum is a fixed post to a tutorial. Read through some of that, try something out, if it doesn't work post your code and I'll help, but I'll not do it for you.
Last edited by masijade : Oct 26th, 2007 at 12:48 pm. Reason: typo
Java Programmer and Sun Systems Administrator
----------------------------------------------
Debugging is twice as hard as writing the code in the first place. Therefore, if you write the code as cleverly as possible, you are, by definition, not smart enough to debug it.
--Brian Kernighan
----------------------------------------------
Debugging is twice as hard as writing the code in the first place. Therefore, if you write the code as cleverly as possible, you are, by definition, not smart enough to debug it.
--Brian Kernighan
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Join Date: Apr 2006
Posts: 140
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Junior Poster
a="2007-05-10"
b="2007-06-10"
awk -v a="$a" -v b="$b" 'BEGIN{
n=split(a,tmpa,"-")
m=split(b,tmpb,"-")
if ( ( tmpa[1] <= tmpb[1] ) && ( tmpa[2] <= tmpb[2] ) ){
print "correct"
}
else { print "not correct"}
}
' |
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