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Top Forums Shell Programming and Scripting Split File Based on Line Number Pattern Post 302241925 by radoulov on Tuesday 30th of September 2008 03:05:27 PM
Old 09-30-2008
With AWK (if I'm not missing something):

[use nawk or /usr/xpg4/bin/awk on Solaris]
Code:
awk '!(NR%10){print>(FILENAME 4);next} 
{print>(FILENAME (++c%4?++i:i?i:++i))}
i==3{i=c=0}' filename

For best performance use mawk if available:

Code:
% repeat 1000000 print ${(l:100::x:)l=line}$((++i)) >> data

% wc data
  1000000   1000000 106888896 data

% time gawk '!(NR%10){print>(FILENAME 4);next}
{print>(FILENAME (++c%4?++i:i?i:++i))}
i==3{i=c=0}' data

gawk  data  3.28s user 0.37s system 97% cpu 3.756 total

% time mawk '!(NR%10){print>(FILENAME 4);next}
{print>(FILENAME (++c%4?++i:i?i:++i))}
i==3{i=c=0}' data

mawk  data  1.44s user 0.42s system 95% cpu 1.939 total

% time nawk '!(NR%10){print>(FILENAME 4);next}
{print>(FILENAME (++c%4?++i:i?i:++i))}
i==3{i=c=0}' data

nawk  data  8.07s user 3.61s system 93% cpu 12.516 total


Last edited by radoulov; 09-30-2008 at 04:31 PM..
 

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GNUNET-RSA(1)						      General Commands Manual						     GNUNET-RSA(1)

NAME
gnunet-rsa - manipulate GNUnet RSA key files SYNOPSIS
gnunet-rsa [options]FILENAME DESCRIPTION
gnunet-rsa can be used to create an RSA private key and to print the corresponding public key. You must specify a filename containing an RSA private key in GNUnet format as an argument. If the file does not exist, gnunet-rsa will create a key. This may then take a while. If the option -p is given, the corresponding public key will be printed to the console. OPTIONS
-p, --print-public-key Print the corresponding public key to stdout. -P, --print-peer-identity Print the corresponding peer identity (hash of the public key) to stdout. This hash is used for the name of peers. -s, --print-short-identity Print the corresponding short hash (256-bit hash of the public key) to stdout. This hash is used for names in the zkey zone. -c FILENAME, --config=FILENAME Use the configuration file FILENAME. -h, --help Print short help on options. -L LOGLEVEL, --loglevel=LOGLEVEL Use LOGLEVEL for logging. Valid values are DEBUG, INFO, WARNING and ERROR. -v, --version Print GNUnet version number. BUGS
Report bugs by using Mantis <https://gnunet.org/bugs/> or by sending electronic mail to <gnunet-developers@gnu.org> GNUnet Mar 15, 2012 GNUNET-RSA(1)
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