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Top Forums UNIX for Advanced & Expert Users Argument list too long w/ sed Post 302850589 by jim mcnamara on Thursday 5th of September 2013 05:44:43 AM
Old 09-05-2013
78000 file names is a lot of text when taken together. ARG_MAX is the limit to the total size of the arguments in bytes given to a command, including all env variables (like PATH, etc.)

one way around the problem, if I get what you are doing with sed:
Code:
ls | while read fname 
do 
 md5sum $fname | gsed -e s/\([^ ]*\) \(.*\(\..*\)\)$/mv -v \2 \1\3/e'
done [... more code]

 

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PMLOADDERIVEDCONFIG(3)					     Library Functions Manual					    PMLOADDERIVEDCONFIG(3)

NAME
pmLoadDerivedConfig - load derived metric definitions from a file C SYNOPSIS
#include <pcp/pmapi.h> int pmLoadDerivedConfig(char *fname); cc ... -lpcp DESCRIPTION
Each line of the file fname is either a comment line (with a ``#'' in the first position of the line) or the declaration of a derived per- formance metric, specified as: * the name of the derived metric, using the same ``dot notation'' syntax that is used for PCP performance metrics, see PCPIntro(1) and pmns(5). * an equals sign (``='') * a valid expression for a derived metric, as described in pmRegisterDerived(3). White space is ignored in the lines. For each line containing a derived metric definition, pmRegisterDerived(3) is called to register the new derived metric. The result from pmLoadDerivedConfig will be the number of derived metrics loaded from fname else a value less than zero in the case of an error. EXAMPLE
# sample derived metric definitions bad_in_pkts = network.interface.in.errors + network.interface.in.drops # note the following would need to be on a single line ... disk.dev.read_pct = 100 * delta(disk.dev.read) / (delta(disk.dev.read) + delta(disk.dev.write)) SEE ALSO
PCPIntro(1), PMAPI(3) and pmRegisterDerived(3). Performance Co-Pilot PMLOADDERIVEDCONFIG(3)
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