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Top Forums UNIX for Dummies Questions & Answers Output to file but append rather than overwrite? Post 302326687 by joeyg on Thursday 18th of June 2009 12:20:27 PM
Old 06-18-2009
Tools use of > and >>

> will create a new file
>> will append to existing file (creating new at first execution)
 

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acctcms(1M)															       acctcms(1M)

NAME
acctcms - command summary from per-process accounting records SYNOPSIS
[options] files DESCRIPTION
reads one or more files, normally in the form described in acct(4). It adds all records for processes that executed identically-named com- mands, sorts them, and writes them to the standard output, normally using an internal summary format. Options recognizes the following options: Print output in ASCII rather than in the internal summary format. The output includes command name, number of times executed, total kcore- minutes, total CPU minutes, total real minutes, mean size (in K), mean CPU minutes per invocation, ``hog factor'', charac- ters transferred, and blocks read and written, as in acctcom(1M). Output is normally sorted by total kcore-minutes. Sort by total CPU time, rather than total kcore-minutes. Combine all commands invoked only once under Sort by number of command invocations. Any file names encountered hereafter are already in internal summary format. Process all records as total accounting records. The default internal summary format splits each field into prime- and non-prime-time parts. This option combines the prime and non-prime time parts into a single field that is the total of both, and provides upward compatibility with old (i.e., UNIX System V) style internal summary format records. The following options can be used only with the option. Output a prime-time-only command summary. Output a non-prime- (offshift) time only command summary. When and are used together, a combination prime and non-prime time report is produced. All the output summaries are total usage except number of times executed, CPU minutes, and real minutes which are split into prime and non-prime. EXAMPLES
A typical sequence for performing daily command accounting and for maintaining a running total is: WARNINGS
Unpredictable output results if is used on new-style internal-summary-format files, or if it is not used with old style internal summary format files. The process mean memory size may overflow for values greater than SEE ALSO
acct(1M), acctcom(1M), acctcon(1M), acctmerg(1M), acctprc(1M), acctsh(1M), fwtmp(1M), runacct(1M), acct(2), acct(4), utmp(4). STANDARDS CONFORMANCE
acctcms(1M)
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