Speed up extraction od tar.bz2 files using bash Post: 302999013

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Top Forums Shell Programming and Scripting Speed up extraction od tar.bz2 files using bash Post 302999013 by Corona688 on Monday 12th of June 2017 11:42:20 AM

06-12-2017

Registered User

At 10 megabytes per second it sounds like there's some room for improvement. But you can't go too crazy or you'll just slow your disk down to uselessness.

This requires the BASH shell, mostly for the ability to do wait "$ONEPARTICULARTHREAD" instead of wait #for everything

Code:

#!/bin/bash

maxproc=2 # Max number of threads.  Suggest 2, or 3 at most
i=0

# Count files
set -- /home/cmccabe/Desktop/NGS/API/*.tar.bz2
FILES="$#"

# Blank $1 $2 ...
set --

let i=1
for FILE in /home/cmccabe/Desktop/NGS/API/*.tar.bz2
do
        printf "(%2d/%2d)\tProcessing %s\n" "$i" "$FILES" "$FILE"
        let i=i+1

        tar -xvjf "$FILE" -C /home/cmccabe/Desktop/NGS/API >/dev/null &

        # Turn $1=pida $2=pidb $3=pidc $4=pidd, into
        #      $1=pida $2=pidb $3=pidc $4=pidd $5=pide
        set -- "$@" $!

        # Shift removes $1 and moves the rest down, so you get
        # $1=pidb $2=pidc $3=pidd $3=pide
        # $# is the number of arguments.
        if [ "$#" -ge $maxproc ]  ; then wait "$1" ; shift; fi
done

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desktop-file-validate

DESKTOP-FILE-VALIDATE(1)				      General Commands Manual					  DESKTOP-FILE-VALIDATE(1)

NAME

       desktop-file-validate - Validate desktop entry files

SYNOPSIS

       desktop-file-validate [--no-warn-deprecated] [--warn-kde] FILE...

DESCRIPTION

       The desktop-file-validate program is a tool to validate desktop entry files according to the Desktop Entry specification 1.0.

       The  specification  describes  a  file format to provide information such as name, icon and description for an application. Such a file can
       then be used as an application launcher and to display the application in the applications menu.

       For information about the Desktop Entry specification, see http://freedesktop.org/wiki/Specifications/desktop-entry-spec.

       The desktop entry files are commonly called desktop files.

OPTIONS

       The following options are supported:

       --no-warn-deprecated
	      Do not warn about usage of deprecated items that were defined in previous versions of the specification.

       --warn-kde
	      Warn about usage of KDE extensions to the specification. This includes the use of the KDE Desktop Entry group, of the  ServiceTypes,
	      DocPath,	Keywords, InitialPreference, Dev, FSType, MountPoint, ReadOnly, UnmountIcon keys, or of the Service, ServiceType and FSDe-
	      vice types.

BUGS

       If you find bugs in the desktop-file-validate program, please report these on https://bugs.freedesktop.org.

SEE ALSO

       desktop-file-edit(1) desktop-file-install(1)

								  FREEDESKTOP.ORG					  DESKTOP-FILE-VALIDATE(1)