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Top Forums Shell Programming and Scripting sed to replace two lines with one Post 302455118 by rdcwayx on Monday 20th of September 2010 09:52:08 PM
Old 09-20-2010
Not really correct:

Code:
cat infile

XXXX
ab
abcd


sed 'N; /^\([^\n]\{1,\}\)\n\1/s/.*\n//' infile
XXXX
ab
abcd

cat infile

ab
abcd

sed 'N; /^\([^\n]\{1,\}\)\n\1/s/.*\n//' infile
abcd



---------- Post updated at 11:52 AM ---------- Previous update was at 11:49 AM ----------

and if you see this situation, what's your expect output?

Code:
ab
abc
abcd
abcde

 

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MAKE_SOCKDFR(8) 					      System Manager's Manual						   MAKE_SOCKDFR(8)

NAME
make_sockdfr - Generates frozen route file for SOCKS server SYNOPSIS
make_sockdfr [infile [outfile] ] DESCRIPTION
make_sockdfr reads in a plain-text route file for the SOCKS server and produces a frozen route file as the output. Both arguments are optional. The default for infile is /etc/sockd.route; the default for outfile is /etc/sockd.fr. You may specify infile while omitting outfile, but you cannot specify outfile without also speficying infile. The contents of the frozen route file is essentially the memory image of the parsed input file. Using the frozen route file can reduce the start-up delay of the SOCKS server program since it no longer has to parse the file contents. When the SOCKS server starts, it always looks for the frozen route file /etc/sockd.fr first. If that file is not found, it then tries to use the plain-text route file /etc/sockd.route. If you use frozen route file, you must remember to run make_sockdfr every time after you modify the plain-text file or the SOCKS server will continue to use the frozen version of a previous route file. To find out the contents of a frozen route file, use dump_sockdfr. FILES
/etc/sockd.fr, /etc/sockd.route SEE ALSO
dump_sockdfr(8), sockd.fr(5), sockd.route(5) AUTHOR
Ying-Da Lee, yingda@esd.sgi.com or yingda@best.com May 6, 1996 MAKE_SOCKDFR(8)
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