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Full Discussion: save only the first letter from lines
Top Forums Shell Programming and Scripting save only the first letter from lines Post 302486929 by Chubler_XL on Monday 10th of January 2011 08:18:43 PM
Old 01-10-2011
Code:
$ cat infile
begin
   two
   4-Fun
end
 
$ cut -c1 infile
b
 
e
 
$ sed 's/^[ \t]*\(.\).*/\1/' infile
b
t
4
e
 
$ sed 's/^[^a-zA-Z]*\([a-zA-Z]\).*/\1/' infile
b
t
F
e

Last edited by Chubler_XL; 01-10-2011 at 09:23 PM.. Reason: Added some more examples
This User Gave Thanks to Chubler_XL For This Post:
Oddant
 

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LEARN ABOUT MINIX

make_sockdfc

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

NAME

       make_sockdfc -  Generates frozen configuratyion file for SOCKS server

SYNOPSIS

       make_sockdfc [infile [outfile] ]

DESCRIPTION

       make_sockdfc reads in a plain-text configuration file for the SOCKS server and produces a frozen configuration file as the output.

       Both  arguments	are  optional. The default for infile is /etc/sockd.conf; the default for outfile is /etc/sockd.fc. You may specify infile
       while omitting outfile, but you cannot specify outfile without also speficying infile.

       The contents of the frozen configuration file is essentially the memory image of the parsed input file. Using the frozen configuration 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 configuration file /etc/sockd.fc first. If that file is not found, it then
       tries to use the plain-text configuration file /etc/sockd.conf. If you use frozen configuration, you  must  remember  to  run  make_sockdfc
       every time after you modify the plain-text file or the SOCKS server will continue to use the frozen file of a previous configuration.

       To find out the contents of a frozen configuration file, use dump_sockdfc.

FILES

       /etc/sockd.fc, /etc/sockd.conf

SEE ALSO

       dump_sockdfc(8), sockd.conf(5), sockd.fc(5)

AUTHOR

       Ying-Da Lee, yingda@best.com or yingda@esd.sgi.com

								    May 6, 1996 						   MAKE_SOCKDFC(8)
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