[SOLVED] sed find replace problem

malkotisaab · 04-12-2011, 06:33 AM

# cat file
192.168.9.100
192.168.9.10 hi hello
# sed s/192.168.9.10/10.0.0.11/g file
10.0.0.110
10.0.0.11 hi hello

I want only 192.168.9.10 to be replaced. the command replacing the 192.168.9.100 as well.

Any suggestions?

AlucardZero · 04-12-2011, 06:35 AM

Just extend your regex by adding a space...

sed s/192.168.9.10 /10.0.0.11/g file

Or if there's no "hi hello" generally, use $ to denote "end of line"

sed s/192.168.9.10$/10.0.0.11/g file

More:

http://www.regular-expressions.info/

man sed

colucix · 04-12-2011, 06:38 AM

Try word boundaries:

Code:

sed 's/\b192.168.9.10\b/10.0.0.11/g' file

or

Code:

sed 's/\<192.168.9.10\>/10.0.0.11/g' file

kurumi · 04-12-2011, 07:19 AM

Ruby(1.9+)

Code:

$ ruby -ne 'puts $_.gsub(/192.168.9.10\b/,"10.10.10.10")' file
192.168.9.100
10.10.10.10 hi hello

malkotisaab · 04-13-2011, 05:19 AM

Quote:

Originally Posted by colucix

Try word boundaries:

Code:

sed 's/\b192.168.9.10\b/10.0.0.11/g' file

or

Code:

sed 's/\<192.168.9.10\>/10.0.0.11/g' file

Didnt work either:

# cat file1
192.168.9.100
192.168.9.10 hi hello
# sed 's/\b192.168.9.10\b/10.0.0.11/g' file1
192.168.9.100
192.168.9.10 hi hello
# sed 's/\<192.168.9.10\>/10.0.0.11/g' file1
192.168.9.100
192.168.9.10 hi hello

colucix · 04-13-2011, 05:31 AM

Which version of sed are you using? On which operating system?

malkotisaab · 04-13-2011, 05:39 AM

Adding to this I am working on AIX machine .

malkotisaab · 04-14-2011, 02:20 AM

Thakns for your inputs everybody.

Got the problem resovled with a little trick:

# cat file1
192.168.9.100
192.168.9.10 hi hello
# sed 's/192.168.9.10 /10.0.0.99 /g' file1
192.168.9.100
10.0.0.99 hi hello

Thanks
Yogesh