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scripting help: to include r in between / :

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# 1  
Old 12-10-2009
scripting help: to include r in between / :
Hi Experts,
Greetings! ,

I have a list of lvs that is having 3 column separated by / .
Want to add "r" after the 3rd / :


Code:
/dev/vgdbnhpu/u01          
/dev/vgdbnhpu/u02
/dev/vgdbnhpu/u03
/dev/vgdbnhpu/u04
/dev/vgdbnhpu/u05
/dev/vgdbnhpu/u06
/dev/vgdbnhpu/u07
/dev/vgdbnhpu/u08
/dev/vgdbnhpu/u09
/dev/vgdbnhpu/d21
/dev/vgdbnhpu/d22



To be change to :
Code:
/dev/vgdbnhpu/ru01
/dev/vgdbnhpu/ru02
/dev/vgdbnhpu/ru03
/dev/vgdbnhpu/ru04
/dev/vgdbnhpu/ru05
/dev/vgdbnhpu/ru06
/dev/vgdbnhpu/ru07
/dev/vgdbnhpu/ru08
/dev/vgdbnhpu/ru09
/dev/vgdbnhpu/rd21
/dev/vgdbnhpu/rd22


Please help with some of yours magic script:
Thanks in adv,
# 2  
Old 12-10-2009
Try:

Code:
awk -F/ '{ OFS="/"; $NF="r"$NF; print; }' file

or using greedy reg exp,

Code:
sed 's!\(.*\)/\(.*\)!\1/r\2!' file

# 3  
Old 12-10-2009
Wrench
Try:
Code:
sed 's|/|/r|3' infile

If it is always the third slash

-or- for the last slash if it is not necessarily the third:
Code:
sed 's|[^/]*$|r&|' infile

Last edited by Scrutinizer; 12-10-2009 at 01:41 PM..
# 4  
Old 12-11-2009
Thanks both the awk and sed .. .. the sed code is awesome , many thanks..
# 5  
Old 12-11-2009
Code:
awk 'BEGIN {FS=OFS="/"} {$NF="r"$NF}1' urfile

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