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Shell Programming and Scripting

Adding tab/new line at the end of each line of a file

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# 8  
Old 08-15-2012
How are you passing the tab to your script? By quoting the corresponding escape sequence?

EDIT: OK I saw the post now. Sorry.

Call the script either with \\t or '\t' or "\t".
Last edited by elixir_sinari; 08-15-2012 at 11:42 AM..
# 9  
Old 08-15-2012
I don't have any reservations of using awk. If my requirement of adding char to end of line is acheived by some other means , I am ok with it

---------- Post updated at 10:47 AM ---------- Previous update was at 10:43 AM ----------

@Sinari : I have tested with the options that you have suggested but nothing works.
# 10  
Old 08-15-2012
Are you sure nothing works? How do you check that the tab is inserted? They're very very hard to see at the end of a line.... Smilie
# 11  
Old 08-15-2012
If you see , the script , I have two lines

Code:
##======== This doesn't work =============================
 awk '{print $0 rsuffix}' TESTDATA.txt > TEMP1.txt
##======== This works =============================
 awk '{print $0 "\t\t"}' TESTDATA.txt > TEMP2.txt

In the second line , I have hardcoded the tab and I can see the results in TEMP2.txt . Ideally , if the solution worked , then TEMP1.txt and TEMP2.txt should have the same data and structure
Last edited by Franklin52; 08-16-2012 at 03:44 AM.. Reason: Please use code tags for data and code samples
# 12  
Old 08-15-2012
Code:
awk '$0=$0' ORS='\t\t\n' TESTDATA.txt > TEMP2.txt

# 13  
Old 08-15-2012
vgersh99,
Thanks for your response. The command line appened two tabs at the end of each line. Can you please explain as how the statement works?

Also, the \t\t that you have hardcoded will be parameterized in my case. Can I replace \t\t using a parameter that I will be passing through command line?
# 14  
Old 08-15-2012
Sorry to insult your intelligence. If you invoke your script with '\t' it should perform as so:
Code:
$ echo 'Hello World' >input
$ awk '{print $0 "\t\t"}' input | cat -e
Hello World             $
$ RSUFFIX="\t"
$ echo "$RSUFFIX"
\t
$ awk -v "rsuffix=$RSUFFIX" '{print $0 rsuffix}' input | cat -e
Hello World     $

Assigning $0=$0 can be made even shorter

Code:
$ awk 1 ORS="$RSUFFIX\n" input | cat -e
Hello World     $
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