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Full Discussion: assigning complicated input to a variable
Top Forums Shell Programming and Scripting assigning complicated input to a variable Post 302348976 by sigtor77 on Sunday 30th of August 2009 03:39:23 PM
Old 08-30-2009
Computer
yes, I should be more specific...

cat `pwd`/csv/LightningProbability30minAlignmentErrorTable_*.csv | sed 's/,/ /g' | awk '{print int(100*$5)}' | grep "^0" | wc -l

this prints out the number of zeroes in the 5th 'column' of all of the csv files in the directory. So I am simply trying to assign it to a variable.

HITS=cat `pwd`/csv/LightningProbability30minAlignmentErrorTable_*.csv | sed 's/,/ /g' | awk '{print int(100*$5)}' | grep "^0" | wc -l

this does not work, and the error message was along the lines of 'file or directory does not exist'. When I surrounded the RHS of the expression with backticks, I had the same result.

However, this worked as desired:
HITS=`cat /csv/LightningProbability30minAlignmentErrorTable_*.csv | sed 's/,/ /g' | awk '{print int(100*$5)}' | grep "^0" | wc -l`

For some reason, I didn't think I still needed the cat in there.

Thanks for the help, all!
 

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csv2rec

CSV2REC(1)							   User Commands							CSV2REC(1)

NAME

       csv2rec - csv to rec converter

SYNOPSIS

       csv2rec [OPTIONS]... [CSV_FILE]

DESCRIPTION

       Convert csv data into rec data.

       -t, --type=TYPE
	      type name for the converted records; if this parameter is ommited then no type is used.

       -s, --strict
	      be strict parsing the csv file.

       -e, --omit-empty
	      omit empty fields.

       --help print a help message and exit.

       --version
	      show version and exit.

AUTHOR

       Written by Jose E. Marchesi.

REPORTING BUGS

       Report bugs to: bug-recutils@gnu.org
       GNU recutils home page: <http://www.gnu.org/software/recutils/>
       General help using GNU software: <http://www.gnu.org/gethelp/>

COPYRIGHT

       Copyright (C) 2010, 2011, 2012 Jose E. Marchesi.  License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>.
       This is free software: you are free to change and redistribute it.  There is NO WARRANTY, to the extent permitted by law.

SEE ALSO

       The  full  documentation  for  csv2rec  is maintained as a Texinfo manual.  If the info and csv2rec programs are properly installed at your
       site, the command

	      info csv2rec

       should give you access to the complete manual.

csv2rec 1.4.93							   January 2012 							CSV2REC(1)
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