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Top Forums Shell Programming and Scripting **HELP** need to split this line faster than cut-command Post 302366143 by daytripper1021 on Thursday 29th of October 2009 02:24:52 AM
Old 10-29-2009
Question **HELP** need to split this line faster than cut-command

Hi,

A datafile containing lines such as below needs to be split:

500000000000932491683600000000000000000000000000016800000GS0000000000932491683600*HOME

I need to get the 2-5, 11-20, and 35-40 characters and I can do it via cut command.

cut -c 2-5 file > temp1.txt
cut -c 11-20 file > temp2.txt
cut -c 35-40 file > temp3.txt
paste -d"," temp1.txt temp2.txt temp3.txt > result.txt


The problem is, with the huge amount of data, the process is too slow. Can this be done faster via awk or sed command? Hope you can teach me.

Thanks!!!
 

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CUT(1)							      General Commands Manual							    CUT(1)

NAME
cut - select out columns of a file SYNOPSIS
cut [ -b | -c] list [file...] cut -f list [-d delim] [ -s] OPTIONS
-b Cut specified bytes -c Select out specific characters -d Change the column delimiter to delim -f Select out specific fields that are separated by the -i Runs of delimiters count as one -s Suppres lines with no delimiter characters, when used EXAMPLES
cut -f 2 file # Extract field 2 cut -c 1-2,5 file # Extract character columns 1, 2, and 5 cut -c 1-5,7- file # Extract all columns except 6 DESCRIPTION
[file...]" delimiter character ( see delim)" with the -f option. Lines with no delimiters are passwd through untouched" Cut extracts one or more fields or columns from a file and writes them on standard output. If the -f flag is used, the fields are sepa- rated by a delimiter character, normally a tab, but can be changed using the -d flag. If the -c flag is used, specific columns can be specified. The list can be comma or BLANK separated. The -f and -c flags are mutually exclusive. Note: The POSIX1003.2 standard requires the option -b to cut out specific bytes in a file. It is intended for systems with multi byte characters (e.g. kanji), since MINIX uses only one byte characters, this option is equivalent to -c. For the same reason, the option -n has no effect and is not listed in this man- ual page. SEE ALSO
sed(1), awk(9). CUT(1)
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