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cut and paste in UNIX [message #112399]

Thu, 24 March 2005 16:55

darry
Messages: 3
Registered: March 2005
Location: Philippines

Junior Member

Hi,

I'm a beginner on UNIX scripting and i'm working on a script that needs to cut and paste columns. What I mean is that i need to interchange the columns but i don't know how to paste what i have cut..Hope you can help me.

Thanks in advance.
Darry

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Re: cut and paste in UNIX [message #112406 is a reply to message #112399]

Thu, 24 March 2005 18:01

William Robertson
Messages: 1643
Registered: August 2003
Location: London, UK

Senior Member

How are you cutting them?

For scripted text manipulation I would try sed, awk, ex or Perl.

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Re: cut and paste in UNIX [message #112411 is a reply to message #112406]

Thu, 24 March 2005 20:17

andrew again
Messages: 2577
Registered: March 2000

Senior Member

tst> cat t.txt
01 data02
11 data12
21 data22
tst> export DT=`date`
tst> cat t.txt | awk '{print $2, $1,"'"$DT"'"}'
data02 01 Thu Mar 24 17:09:42 PST 2005
data12 11 Thu Mar 24 17:09:42 PST 2005
data22 21 Thu Mar 24 17:09:42 PST 2005

see http://www.akadia.com/services/ora_important_2000.html (serach for Eliminating characters from the data file)

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Re: cut and paste in UNIX [message #112432 is a reply to message #112411]

Fri, 25 March 2005 06:00

William Robertson
Messages: 1643
Registered: August 2003
Location: London, UK

Senior Member

Why cat though?

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Re: cut and paste in UNIX [message #112438 is a reply to message #112432]

Fri, 25 March 2005 07:18

William Robertson
Messages: 1643
Registered: August 2003
Location: London, UK

Senior Member

Also I noticed the tip Avoid Rollback Segement Problems with huge Updates / Deletes (on the page you linked to) does not work. (After you fix the two typos, you get "ORA-01002: fetch out of sequence" because it fetches across commits with a FOR UPDATE cursor.) It's unrelated I know, but it just happened to be the first one I looked at.

Update:
The next tip I looked at was How to avoid performance disaster with PL/SQL tables, where the author appears not to be familiar with IN parameters.

[Updated on: Fri, 25 March 2005 07:43]

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