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Conversion from Upper Case to Lower Case Condition based

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# 1  
Old 07-08-2011
Conversion from Upper Case to Lower Case Condition based
Hello Unix Gurus :

It would be really appreciative if can find a solution for this .

I have records in a file .
I need to Capitalize the records based on condition .

For Example i tried the following Command

COMMAND -->
Code:
fgrep "2000YUYU" /export/home/oracle/TST/data.dat | tr '[A-Z]' '[a-z]' > Buzz

The problem i am facing is this command only picks the data which matches the condition and writes into the file buzz.
I really needed the whole file with the changes .
Can Sed or awk needs to be used .

Below is the sample of the data file.
================================
Code:
Z03741                   67595                                                             1266767IUFIUFJJJ                                   aaaa bbbbb cccc dd. xxxxxxx                 aaaa bbb cccc, Inc.    Tst .                 Floor 2                                                               El Segundo                    847474     sdfd df jjdkdkd                   dfdfd ssdfsdfsdf                            CA                                                                                   
Z03741                   67595                                                             1220CNBT1


===================================

Thanks
B-
Last edited by Franklin52; 07-08-2011 at 03:03 PM.. Reason: Please use code tags
# 2  
Old 07-08-2011
to use the entire file, give tr the entire file.

Code:
tr '[A-Z]' '[a-z]' < /export/home/oracle/TST/data.dat > newfile

data.dat and newfile should not be the same file, tr doesn't edit in-place.
This User Gave Thanks to Corona688 For This Post:
tsbiju
# 3  
Old 07-08-2011
Show a sample of input and output.
# 4  
Old 07-08-2011
Is there a command that does edit in-place ?

Thanks
B-
# 5  
Old 07-08-2011
You will say i am nitpicking but using character class would make the code more reliable (avoid unexpected translation with some locale)

Code:
tr '[:upper:]' '[:lower:]' < /export/home/oracle/TST/data.dat > newfile

... by the way i don't know about your fgrep implementation, but i would bet there is the -i option available to make you grep ignore case .
so fgrep -i yuyu .... will grep any combination like
Code:
YuYu 
YUyu 
yuyU

... or whatever
Last edited by ctsgnb; 07-08-2011 at 01:55 PM..
This User Gave Thanks to ctsgnb For This Post:
tsbiju
# 6  
Old 07-08-2011
Quote:
Originally Posted by tsbiju
Is there a command that does edit in-place ?

Thanks
B-
Do you really want to edit in-place? If anything goes wrong you've destroyed your original, not a copy!

You can't just redirect into the same file you're reading from either, because you'd end up deleting the file before you even begin reading from it. Hence why this, and most shell utilities, don't edit in-place. Modifying the original is easy enough without that:
Code:
tr '[A-Z]' '[a-z]' < /export/home/oracle/TST/data.dat > /tmp/$$
cat /tmp/$$ > /export/home/oracle/TST/data.dat
rm /tmp/$$

'cat' is better than 'mv' for this because it won't ever alter data.dat's ownership or permissions.
# 7  
Old 07-08-2011
@Shamrock :

INPUT FILE (DATA.DAT)
=================
Code:
222222     1    A1B1         aaaaabbbbb          ccccccccc
333333     6    A2B2         xxxxxxyyyy            dddddddddd
555555          Q222         hdhdhdh3k3k          jvjvmvkfkfkfk

Code:
fgrep "A2B2" /export/home/oracle/TST/data.dat | tr '[a-z]' '[A-Z]' > Buzz

OUTPUT FILE (Buzz) from the above command
==================================
Code:
333333     6    A2B2         XXXXXYYYYY            DDDDDDDDDD


OUTPUT DESIRED
===========================================


Code:
222222     1    A1B1         aaaaabbbbb          ccccccccc
333333     6    A2B2         XXXXXYYYYY            DDDDDDDDDD
555555          Q222         hdhdhdh3k3k          jvjvmvkfkfkfk

Thanks
B-
Last edited by Franklin52; 07-08-2011 at 03:04 PM.. Reason: Please use code tags
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