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[Solved] Replace the second pattern alone in VI.

 
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Top Forums UNIX for Dummies Questions & Answers [Solved] Replace the second pattern alone in VI.
# 1  
Old 12-03-2013
[Solved] Replace the second pattern alone in VI.
I have lines like:
Code:
table10 table_name_10 table10 table_name_10
table20 table_name_20 table20 table_name_20
table30 table_name_30 table30 table_name_30

I want to change the second "table_names" in all lines to test_table_name. Required output would be:

Code:
table10 table_name_10 table10 test_table_name_10
table20 table_name_20 table20 test_table_name_20
table30 table_name_30 table30 test_table_name_30

How do I do that in VI editor?
# 2  
Old 12-03-2013
This might not be pretty, but you could do it in three steps:
Code:
:%s/table_name_/SOMETHING_UNIQUE/
:%s/table_name_/test_table_name_/
:%s/SOMETHING_UNIQUE/table_name_/

# 3  
Old 12-03-2013
something to start with:
Code:
sed 's/\(.*[ ]\)\(.*\)/\1test_\2/' myFile

# 4  
Old 12-03-2013
Quote:
Originally Posted by bartus11
This might not be pretty, but you could do it in three steps:
Code:
:%s/table_name_/SOMETHING_UNIQUE/
:%s/table_name_/test_table_name_/
:%s/SOMETHING_UNIQUE/table_name_/

That will replace first occurrences of "table_name". I don't want to touch the second column (first occurrence). Only change the values in the last column (second occurrence).

---------- Post updated at 01:59 PM ---------- Previous update was at 01:57 PM ----------

Quote:
Originally Posted by vgersh99
something to start with:
Code:
sed 's/\(.*[ ]\)\(.*\)/\1test_\2/' myFile

I am looking for steps in VI editor not sed command.
# 5  
Old 12-03-2013
Quote:
Originally Posted by gctex
That will replace all occurrences of "table_name". I don't want to touch the second column (first occurrence). Only change the values in the last column (second occurrence).

---------- Post updated at 01:59 PM ---------- Previous update was at 01:57 PM ----------



I am looking for steps in VI editor not sed command.
You can surely adopt what's been given in sed - try it.
# 6  
Old 12-03-2013
I tried something like '%s/\(.*[ ]\)\(.*\)/\1test_\2/'

It doesn't work.
Last edited by Scott; 12-03-2013 at 02:23 PM.. Reason: Code tags
# 7  
Old 12-03-2013
Quote:
Originally Posted by gctex
I tried something like '%s/\(.*[ ]\)\(.*\)/\1test_\2/'

It doesn't work.
works fine in my case:
Code:
%s/\(.*[ ]\)\(.*\)/\1test_\2/

 
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