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Sed Issue....

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# 1  
Old 04-07-2009
Sed Issue....
Can someone help me "port" this to AIX sed?
Code:
 
sed  '/nas/{n;s/true/false/}'

I know it doesn't like the ; but i don't know how else to do it.... never had to sed on an AIX box Smilie
Last edited by DeviousPete; 04-07-2009 at 04:52 PM.. Reason: added code tags
# 2  
Old 04-07-2009
Have you tried to place the commands on separate lines?

Code:
sed '/nas/{
n
s/true/false/
}'

Regards
# 3  
Old 04-07-2009
Yea that works...........
However...... I kind of need it on a single line.....
Don't ask.... Smilie

Quote:
Originally Posted by Franklin52
Have you tried to place the commands on separate lines?

Code:
sed '/nas/{
n
s/true/false/
}'

Regards
# 4  
Old 04-07-2009
A similar solution in awk:

Code:
awk 'f{sub("true", "false");f--}/nas/{f++}1'

Use nawk or /usr/xpg4/bin/awk on Solaris.

Regards
# 5  
Old 04-07-2009
try this:
Code:
sed  '/nas/{n;s/true/false/;}'

# 6  
Old 04-07-2009
Thats it!!!
Thanks vgersh99 ....
Care to explain the logic behind that? Just for my info...

Franklin..... Thanks... I was just working on it in awk...
# 7  
Old 04-07-2009
'man sed' says:
Code:
     { command
     command
     }

     The { can be preceded with blank characters and can be  fol-
     lowed  with  white  space.  The  commands can be preceded by
     white space. The terminating } must be preceded by a NEWLINE
     character  and can be preceded or followed by <blank>s.  The
     braces may be preceded or followed by <blank>s. The  command
     may  be  preceded  by  <blank>s,  but may not be followed by
     <blank>s.

which means that the trailing 'action' should have a trailing 'terminator', i.e. ';'.
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