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A Little Devil Called tr

Issue 53

From Issue #53
September 1998

Sep 01, 1998  By Hans de Vreught
 in
Here's a useful command for translating or deleting characters in a file.
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Filtering fields of a file

barun parichha's picture
Submitted by barun parichha (not verified) on Tue, 10/26/2010 - 01:26.

Here r my set of records in file
File.txt:
1::2:3:4
4:5:6:7:8
7:8:9:10:
7: 8 9:1:2:3
::::

The fields are separated by field separator(:).
I want to print the fields of this record. There are two problems while printing this. 1) some fields are blank(::), 2) Some fields contains more then one characters separated by space character (:8 9:)
Can it be done using tr ?

pleas let me wat it does

Anonymous's picture
Submitted by Anonymous on Tue, 03/02/2010 - 07:10.

tr "(){}[]\"'<>;&@" " " < $data_dir/SCell_$dt.wk > $data_dir/SCell_$dt.sort.init

Re: Take Command: A Little Devil Called tr

Anonymous's picture
Submitted by Anonymous on Sun, 09/29/2002 - 02:00.

I would like to be able to count how many of each letter of the alphabet are in a file, reguardless of case. I'm trying to figure out how to make tr replace EACH letter with the letter followed by a line feed.

Thank you.

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