need help du -sk Post: 302097266

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Top Forums UNIX for Dummies Questions & Answers need help du -sk Post 302097266 by arunkumar_mca on Wednesday 22nd of November 2006 11:58:57 PM

11-23-2006

Registered User

Quote:

Originally Posted by grial

Sure!

Code:

... awk '{count+=$1; print}END {print "Total:  ",count,"kb"}'

I'm not an awk expert but here we go!
"count" is where the size is going to be contained.
In the first {}, for each line (result of du), count will increment by adding the first field value, represented by $1 (by default fields are separated by spaces and/or tabs). In this case, the first field is the size of the folder. And print the whole line.
Finally, in the second {}, the result is shown.
Regards.

Grial thanks for your explanation and very great of you .. Please let me know why we are using print here "{count+=$1; print}" . please let me know the use of print here if we didnt use print here is it right ?? .Let me know ,also with that i am new to AWK...

Thanks in advance,
Arun kumar

arunkumar_mca

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LEARN ABOUT DEBIAN

recsel

RECSEL(1)							   User Commands							 RECSEL(1)

NAME

       recsel - print records from a recfile

SYNOPSIS

       recsel [OPTION]... [-t TYPE] [-n INDEXES | -e RECORD_EXPR | -q EXPR | -m NUM] [-c | (-p|-P) FIELD_EXPR] [FILE]...

DESCRIPTION

       Select and print rec data.

       -d, --include-descriptors
	      print record descriptors along with the matched records.

       -C, --collapse
	      do not section the result in records with newlines.

       -S, --sort=FIELD
	      sort the output by the specified field.

       -U, --uniq
	      remove duplicated fields in the output records.

       -s, --password=STR
	      decrypt confidential fields with the given password.

       --help print a help message and exit.

       --version
	      show version and exit.

   Record selection options:
       -i, --case-insensitive
	      make strings case-insensitive in selection expressions.

       -t, --type=TYPE
	      operate on records of the specified type only.

       -e, --expression=EXPR
	      selection expression.

       -q, --quick=STR
	      select records with fields containing a string.

       -n, --number=NUM,...
	      select specific records by position, with ranges.

       -R, --random=NUM
	      select a given number of random records.

   Output options:
       -p, --print=FIELDS
	      comma-separated list of fields to print for each matching record.

       -P, --print-values=FIELDS
	      as -p, but print only the values of the selected fields.

       -R, --print-row=FIELDS
	      as -P, but separate the values with spaces instead of newlines.

       -c, --count
	      print a count of the matching records instead of the records themselves.

   Special options:
       --print-sexps
	      print the data in sexps instead of rec format.

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 recsel is maintained as a Texinfo manual.  If the info and recsel programs are properly installed at your site,
       the command

	      info recsel

       should give you access to the complete manual.

recsel 1.4.93							   January 2012 							 RECSEL(1)