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[SOLVED] sed -i not available in solaris 5.10

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Top Forums Shell Programming and Scripting [SOLVED] sed -i not available in solaris 5.10
# 8  
Old 10-03-2012
The sed command didn't work for you because the relative address +2 is a non-standard GNU sed extension. However, the standard ed text editor supports this type of addressing. And since ed can write to the file it's editing, there's no need to move files around.

Code:
printf '%s\n' 'g/hello world/.,+2s/^/#/' w | ed -s list.txt

The same thing in the more readable/maintainable heredoc format:
Code:
ed -s list.txt <<'EOED'
g/hello world/ .,+2 s/^/#/
w
EOED

If you are fine with blindly overwriting the original with sed/perl -i or mv, this is no less safe. Backups can be created before invoking ed or from within ed using the write command.

Regards,
Alister

---------- Post updated at 04:33 PM ---------- Previous update was at 04:15 PM ----------

Quote:
Originally Posted by Corona688
how about awk? Use nawk on solaris.
Code:
awk '/pattern/ {
        for(N=1; N<=3; N++)
        {
                if(N>1) getline
                print "#", $0;
        }
        next } 1' inputfile > outputfile

After a round of golf:
Code:
awk '/pattern/ && n=NR, n+2==NR {printf "#"} 1' inputfile > outputfile

Regards,
Alister
Last edited by alister; 10-03-2012 at 05:20 PM..
This User Gave Thanks to alister For This Post:
Irishboy24
# 9  
Old 10-03-2012
Some more golf Smilie
Code:
awk '/pattern/{c=3} c-->0{printf "#"}1' infile

sed version:
Code:
sed '/pattern/{N; N; s/^/#/; s/\n/&#/g;}' infile

This User Gave Thanks to Scrutinizer For This Post:
Irishboy24
# 10  
Old 10-03-2012
I'm loving golf!!..i got it working with nawk, although ed text editor seems to have been disabled. i'm not complaining because its resolved.

thanks all for your help and advice.

cheers
# 11  
Old 10-03-2012
Regarding golf: Nice strokes, Scrutinizer.

Regarding ed: ed? disabled? what manner of blasphemy is this?!?! Should you decide to quit your job in protest, I will send you a few bits Smilie

Kidding aside, is there a rationale for this? I am genuinely curious.

Regards,
Alister
# 12  
Old 10-03-2012
dunno mate..i'll find out ...
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