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How to replace the blank in unix

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Top Forums Shell Programming and Scripting How to replace the blank in unix
# 1  
Old 09-17-2010
How to replace the blank in unix
Hi,

I have data like below: The columns MARKET ,STORE, WEEK1 will be present always. After that, there can be week2, week3 columns or some times there wont be no columns after week1. The week1 or week2 columns can have data or blank. I need to replace the blank with NIS.

Code:
MARKET,STORE,STORE NAME,WEEK1,WEEK2
MARKET,STORE1,STORENAM1, 000000003.99,
MARKET,STORE1,STORENAM2,NH,NH
MARKET,STORE1,STORENAM3, 000000003.99, 000000003.99
MARKET,STORE1,STORENAM4,,NH
MARKET,STORE1,STORENAM5,, 000000003.99
MARKET,STORE1,STORENAM6,, 000000008.60

Expected output:
Code:
MARKET,STORE,STORE NAME,WEEK1,WEEK2
MARKET,STORE1,STORENAM1, 000000003.99,NIS
MARKET,STORE1,STORENAM2,NH,NH
MARKET,STORE1,STORENAM3, 000000003.99, 000000003.99
MARKET,STORE1,STORENAM4,NIS,NH
MARKET,STORE1,STORENAM5,NIS, 000000003.99
MARKET,STORE1,STORENAM6,NIS, 000000008.60

I hope i am making you clear. if not, please let me know.

Thanks,
Selva
Last edited by Scott; 09-17-2010 at 01:18 PM.. Reason: Code tags, please...
# 2  
Old 09-17-2010
Code:
sed -e 's/,, */,NIS, /g' -e 's/\(, .*,$\)/\1 NIS/g' infile

# 3  
Old 09-17-2010
Hi,

Thanks for your reply. but it is not working if my input data is like below. And could you please explain the code?

MARKET,STORE,STORENAME1,NH,

Thanks,
Selva
# 4  
Old 09-17-2010
Code:
$ awk -F, '$4 == "" {print $1 "," $2 "," $3 ",NIS," $5} $4 != "" {print $0}' <<INPUT
> MARKET,STORE,STORE NAME,WEEK1,WEEK2
> MARKET,STORE1,STORENAM1, 000000003.99,
> MARKET,STORE1,STORENAM2,NH,NH
> MARKET,STORE1,STORENAM3, 000000003.99, 000000003.99
> MARKET,STORE1,STORENAM4,,NH
> MARKET,STORE1,STORENAM5,, 000000003.99
> MARKET,STORE1,STORENAM6,, 000000008.60
> INPUT
MARKET,STORE,STORE NAME,WEEK1,WEEK2
MARKET,STORE1,STORENAM1, 000000003.99,
MARKET,STORE1,STORENAM2,NH,NH
MARKET,STORE1,STORENAM3, 000000003.99, 000000003.99
MARKET,STORE1,STORENAM4,NIS,NH
MARKET,STORE1,STORENAM5,NIS, 000000003.99
MARKET,STORE1,STORENAM6,NIS, 000000008.60
$

# 5  
Old 09-17-2010
Code:
sed -e 's/,, */,NIS, /g' -e 's/\(,$\)/\1 NIS/g' infile


Quote:
could you please explain the code?
Code:
sed -e 's/,, */,NIS, /g' -e 's/\(,$\)/\1 NIS/g' infile


Find a double comma
Followed by zero or more blanks
And substitute them with the string ",NIS, "
Match all occurences in a line
Combine multiple sed commands
Find a comma at the end of a line
Save the matched pattern
And substitute it with the pattern followed by the string " NIS"
Last edited by verdepollo; 09-17-2010 at 04:53 PM..
# 6  
Old 09-17-2010
Code:
$ sed -e 's/, *,/,NIS,/g' -e 's/, *$/,NIS/g' <<INPUT
> MARKET,STORE,STORE NAME,WEEK1,WEEK2
> MARKET,STORE1,STORENAM1, 000000003.99,
> MARKET,STORE1,STORENAM2,NH,NH
> MARKET,STORE1,STORENAM3, 000000003.99, 000000003.99
> MARKET,STORE1,STORENAM4,,NH
> MARKET,STORE1,STORENAM5,, 000000003.99
> MARKET,STORE1,STORENAM6,, 000000008.60
> INPUT
MARKET,STORE,STORE NAME,WEEK1,WEEK2
MARKET,STORE1,STORENAM1, 000000003.99,NIS
MARKET,STORE1,STORENAM2,NH,NH
MARKET,STORE1,STORENAM3, 000000003.99, 000000003.99
MARKET,STORE1,STORENAM4,NIS,NH
MARKET,STORE1,STORENAM5,NIS, 000000003.99
MARKET,STORE1,STORENAM6,NIS, 000000008.60
$

Last edited by fnds; 09-17-2010 at 05:01 PM.. Reason: fix an error
# 7  
Old 09-17-2010
Hi,

It is working as expected. I really thank you.

Thanks,
Selva
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