ImageMagick image Batch Compression example in Linux

The code is as follows	Copy Code
sudo apt-get install ImageMagick

Other Linux has the corresponding software installation commands, I wrote the following two scripts, the pictures are batch format and compression operations:
Image format conversion, here is an example of [BB][MM][PP] (all BMP files) in the format of the file, converted to a small space-occupying JPG file:

The code is as follows

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#!/bin/sh For IMG on ' find./-name ' *. [BB] [MM] [PP] "'; Todo #change Upper filename to lower _imglower= ' echo $img |tr "[: Upper:]" "[: Lower:]" '; #get file ' s basename _basename= ' basename $_imglower. bmp '; #get file ' s dir _dirname= ' dirname $img '; #get desc filename with path _basefullname=$_dirname "/" $_basename ". jpg"; #do Convert Convert $img $_basefullname; #remove BMP File RM $img; echo "Deal $_basefullname successfully"; Done

Picture compression script:

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For IMG on ' find./-name ' *. [JJ] [PP] [GG] "'; Todo Convert-resize 85%*85% $img $img-resized; RM $img; MV $img-resized $img Echo $img Done For IMG on ' find./-name ' *. [PP] [NN] [GG] "'; Todo Convert-resize 85%*85% $img $img-resized; RM $img; MV $img-resized $img Echo $img Done For IMG on ' find./-name ' *. [GG] [II] [FF] "'; Todo Convert-resize 85%*85% $img $img-resized; RM $img; MV $img-resized $img Echo $img Done

Method 2:

First, you install a imagemagick to perform

The code is as follows	Copy Code
$sudo Apt-get Install ImageMagick

The overall command, in fact, is to query the directory of all the files, and then execute the relevant commands, I have a blog post is about the batch renaming the file, the command format is almost
Please refer to:
Method One:

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For file in *. JPG; Do MV $file ' echo $file | Sed-e s/[.] Jpg/.jpg/g '; Done

The name extension is. JPG's name is lowercase jpg extension

Method Two:

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for filename in *. JPG; Do MV $filename ${filename/jpg/jpg}; Done

This is another kind of substitution

Method Three:

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for file in *; Do MV $file ' echo $file | Awk-f. ' {print $. ' ToLower ($)} '; Done

This enables you to modify multiple extensions at the same time, but you can only support file names that contain multiple (.) of the situation

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$for img in ' Find./-name ' *. JPG "'; Do convert-quality $img ${img/jpg/jpg}; Done

In one word, the quality of the picture compressed to the original 70% of the extent of the image in the computer to see the basic will not be different, used to bulk compress pictures, upload pictures to the online most convenient.

Convert is part of the ImageMagick package,-quality represents compression quality.
$img is the original file name, change the extension of the original file name to small writing for the compressed file name (${img/jpg/jpg})