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Shell Programming and Scripting
Syntax error piping to bc on command line - works when assigned to var
Post 302588622 by Corona688 on Monday 9th of January 2012 01:21:21 PM
01-09-2012
I always endeavour to answer the question, and the actual problem. 
Seeing your ps actually encouraged me to suggest more awk things.
It may be the complete lack of a newline that causes bc to fail, too. echo will add one on the end, but just piping it in would end up with nothing. Many commands are picky about lines without newlines -- some versions of awk and sed, for instance.
Seeing your ps actually encouraged me to suggest more awk things.It may be the complete lack of a newline that causes bc to fail, too. echo will add one on the end, but just piping it in would end up with nothing. Many commands are picky about lines without newlines -- some versions of awk and sed, for instance.
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LEARN ABOUT DEBIAN
approx-gc
APPROX-GC(8) System Manager's Manual APPROX-GC(8) NAME
approx-gc - garbage-collect the cache of Debian archive files SYNOPSIS
approx-gc [OPTION]... DESCRIPTION
approx-gc scans the cache created by approx(8) and finds files that are corrupted or no longer needed. With no options specified, these files are listed on standard output and removed from the cache. A corrupted file is one whose size or checksum does not match the value specified in the Packages or Sources file. An unneeded file is one that is not referenced from any distribution's Packages or Sources file. approx-gc may take several minutes to finish. OPTIONS
-c file, --config file Specify an additional configuration file. May be used multiple times. -f, --fast Don't perform checksum validation. -k, --keep, -s, --simulate Don't remove files from the cache. -q, --quiet Don't print file names. -v, --verbose Print the reason for removal of each file. EXAMPLES
To remove all unneeded or corrupted files from the cache: approx-gc --quiet This is run as a weekly cron(8) job. To list the files that would be removed from the cache, without actually doing so: approx-gc --keep FILES
/etc/approx/approx.conf Configuration file for approx and related programs. /var/cache/approx Default cache directory for archive files. SEE ALSO
approx.conf(5), approx(8), cron(8) AUTHOR
Eric Cooper <ecc@cmu.edu> May 2011 APPROX-GC(8)