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Full Discussion: Optimize my mv script
Top Forums Shell Programming and Scripting Optimize my mv script Post 302923751 by junior-helper on Tuesday 4th of November 2014 10:53:46 AM
Old 11-04-2014
Try this and please test it thoroughly to ensure that it is producing the same result as your initial script.
Code:
d=/conversion/program/out
ls $d | while read line ; do
        a=`echo $line|cut -c1-5|sed "s/_//g"`
        b=`echo $line|cut -c16-21`
        [ ! -d "$d/processed/$b/$a" ] && mkdir -p $d/processed/$b/$a
        mv $d/$line $d/processed/$b/$a/
done

mkdir's -p option means "no error if existing, make parent directories as needed"

---------- Post updated at 05:53 PM ---------- Previous update was at 05:48 PM ----------

Creating and using an additional variable, e.g. dp="$d/processed", might also be useful to avoid repetitions.
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mkdir(1)							   User Commands							  mkdir(1)

NAME
mkdir - make directories SYNOPSIS
mkdir [-m mode] [-p] dir... DESCRIPTION
The mkdir command creates the named directories in mode 777 (possibly altered by the file mode creation mask umask(1)). Standard entries in a directory (for instance, the files ".", for the directory itself, and "..", for its parent) are made automatically. mkdir cannot create these entries by name. Creation of a directory requires write permission in the parent directory. The owner-ID and group-ID of the new directories are set to the process's effective user-ID and group-ID, respectively. mkdir calls the mkdir(2) system call. setgid and mkdir To change the setgid bit on a newly created directory, you must use chmod g+s or chmod g-s after executing mkdir. The setgid bit setting is inherited from the parent directory. OPTIONS
The following options are supported: -m mode This option allows users to specify the mode to be used for new directories. Choices for modes can be found in chmod(1). -p With this option, mkdir creates dir by creating all the non-existing parent directories first. The mode given to intermedi- ate directories will be the difference between 777 and the bits set in the file mode creation mask. The difference, how- ever, must be at least 300 (write and execute permission for the user). OPERANDS
The following operand is supported: dir A path name of a directory to be created. USAGE
See largefile(5) for the description of the behavior of mkdir when encountering files greater than or equal to 2 Gbyte ( 2**31 bytes). EXAMPLES
Example 1: Using mkdir The following example: example% mkdir -p ltr/jd/jan creates the subdirectory structure ltr/jd/jan. ENVIRONMENT VARIABLES
See environ(5) for descriptions of the following environment variables that affect the execution of mkdir: LANG, LC_ALL, LC_CTYPE, LC_MES- SAGES, and NLSPATH. EXIT STATUS
The following exit values are returned: 0 All the specified directories were created successfully or the -p option was specified and all the specified directories now exist. >0 An error occurred. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWcsu | +-----------------------------+-----------------------------+ |CSI |enabled | +-----------------------------+-----------------------------+ |Interface Stability |Standard | +-----------------------------+-----------------------------+ SEE ALSO
rm(1), sh(1), umask(1), intro(2), mkdir(2), attributes(5), environ(5), largefile(5), standards(5) SunOS 5.10 1 Feb 1995 mkdir(1)
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