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Old 12-01-2005, 11:58 AM   #1
jaakkop
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a command/script for replacing a word with another


...

Last edited by jaakkop; 02-28-2011 at 04:44 AM.
 
Old 12-01-2005, 12:13 PM   #2
pixellany
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sed

Your example is the most basic use of this very powerful command.
Here's the general form:

sed 's/oldword/newword/g' <oldfile >newfile

This reads from oldfile and replaces ALL occurences of oldword with newword. It then writes to newfile.
You are now standing on the tip of a very large iceberg---here is the best tutorial on sed that I have ever seen: http://www.grymoire.com/Unix/Sed.html

Good Luck
 
Old 12-01-2005, 12:14 PM   #3
schneidz
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try:
Code:
sed s/word/new-word/g  file.txt >> new-file.txt
'man sed' for more info.
_______________

sorry pixel, 'mid-air collision'

(you posted right before i hit submit)

Last edited by schneidz; 12-01-2005 at 12:16 PM.
 
Old 12-01-2005, 12:16 PM   #4
reddazz
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You can use sed. e.g.
Code:
$sed -e "s/oldword/newword/g" filename > filename2
The syntax maybe slightly different on Linux. I ran that on FreeBSD and it works fine.
 
Old 12-01-2005, 12:17 PM   #5
keefaz
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Or to edit the file 'in place'
Code:
sed -i -e 's/oldword/newword/' filename
 
Old 12-01-2005, 12:20 PM   #6
reddazz
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Got beaten to it. There are many helpful people around here.
 
Old 12-02-2005, 11:03 AM   #7
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...

Last edited by jaakkop; 02-28-2011 at 04:44 AM.
 
Old 12-02-2005, 12:12 PM   #8
keefaz
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Use other separators ?
Code:
sed -i "s#word#$INSTDIR#g" file.sh
 
Old 12-02-2005, 01:11 PM   #9
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Last edited by jaakkop; 02-28-2011 at 04:44 AM.
 
Old 12-02-2005, 03:12 PM   #10
eddiebaby1023
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If you need to include shell variable in the patterns, use double quotes. You can use pretty much any character as the pattern delimiter, the first character after the 's' is taken to be the delimiter. To use the delimiter character in a pattern prefix it with a backslash - you can write some pretty confusing patterns this way!
 
Old 12-02-2005, 04:53 PM   #11
linmix
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Quote:
Originally posted by pixellany

here is the best tutorial on sed that I have ever seen: http://www.grymoire.com/Unix/Sed.html

Good Luck
Great link! I'm trying to get to grips with sed mysel and it looks like I might learn some nice tricks there.

I might even learn why sed doesn't appear to work correctly with examples I have from the book in my sig.
 
Old 12-03-2005, 10:01 PM   #12
zahadumy
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Quote:
Originally Posted by pixellany
here is the best tutorial on sed that I have ever seen: http://www.grymoire.com/Unix/Sed.html
Do you have any links with tutorials?
This tutorial is great and I would be glad to read any tutorial like this, if you have more links... Thank you.
 
Old 12-04-2005, 07:02 AM   #13
linmix
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Browse through the parent directory of that link. There's a couple more:
http://www.grymoire.com/Unix/
 
Old 12-04-2005, 10:17 AM   #14
pixellany
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I don't generally keep track of links like this--it is so much easier to get it thru Google.
For example, when I search on "sed", I see something like Grymoire and recognize it.

Like Microsoft, Google is making us soft and lazy. I guess the big difference is that we don't have to PAY Google to do this for (to?) us......
 
Old 12-04-2005, 10:21 AM   #15
zahadumy
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Quote:
Originally Posted by pixellany
I don't generally keep track of links like this--it is so much easier to get it thru Google.
Let's say you search some "sed" examples. You will find through Google the same few simple examples on almost every site. This becomes annoying after a time. That's why I like to have bookmarks, links where you find everything, or at least a lot of documentation. I made a bookmark for sed and awk on that site and I'm pretty sure I will never lose time searching for these 2.
 
  


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