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Full Discussion: Optimize my mv script
Top Forums Shell Programming and Scripting Optimize my mv script Post 302923783 by whegra on Tuesday 4th of November 2014 12:37:42 PM
Old 11-04-2014
Here are the results of a test run.

To move 500 files:

New code from junior-helper
Code:
$ time ./new.sh

real    5m16.228s
user    0m12.693s
sys     0m35.638s

Old code
Code:
$ time ./old.sh

real    5m25.931s
user    0m11.627s
sys     0m37.098s

Looks like I'm almost getting a 10sec savings per 500 files.

Also using this line

Code:
[ ! -d "$d/processed/$b/$a" ] && mkdir -p $d/processed/$b/$a && mv $d/$line $d/processed/$b/$a/

Looked to do something odd, it only moved files when the folder did not already exist, so it only moved about 120 files then completed running.
 

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ATF-SH(1)						    BSD General Commands Manual 						 ATF-SH(1)

NAME
atf-sh [-s shell] -- interpreter for shell-based test programs SYNOPSIS
atf-sh script DESCRIPTION
atf-sh is an interpreter that runs the test program given in script after loading the atf-sh(3) library. atf-sh is not a real interpreter though: it is just a wrapper around the system-wide shell defined by ATF_SHELL. atf-sh executes the inter- preter, loads the atf-sh(3) library and then runs the script. You must consider atf-sh to be a POSIX shell by default and thus should not use any non-standard extensions. The following options are available: -s shell Specifies the shell to use instead of the value provided by ATF_SHELL. ENVIRONMENT
ATF_LIBEXECDIR Overrides the builtin directory where atf-sh is located. Should not be overridden other than for testing purposes. ATF_PKGDATADIR Overrides the builtin directory where libatf-sh.subr is located. Should not be overridden other than for testing purposes. ATF_SHELL Path to the system shell to be used in the generated scripts. Scripts must not rely on this variable being set to select a specific interpreter. EXAMPLES
Scripts using atf-sh(3) should start with: #! /usr/bin/env atf-sh Alternatively, if you want to explicitly choose a shell interpreter, you cannot rely on env(1) to find atf-sh. Instead, you have to hardcode the path to atf-sh in the script and then use the -s option afterwards as a single parameter: #! /path/to/bin/atf-sh -s/bin/bash ENVIRONMENT
ATF_SHELL Path to the system shell to be used in the generated scripts. SEE ALSO
atf-sh(3) BSD
September 27, 2014 BSD
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