=== CD 抓轨为 mp3 (有损) ===
 sudo apt-get install abcde;abcde -o mp3 -b
 
=== CD 抓轨为 Flac (无损) ===
 sudo apt-get install abcde;abcde -o flac -b
 
=== ape 转换为 flac ===
 #sudo apt-get install flac shntool iconv
 iconv -f GB2312 -t UTF-8 example.cue -o example_UTF-8.cue
 shntool split -t "%n.%p-%t" -f example_UTF-8.cue -o flac example.ape -d flacOutputDir
 
=== ape 转换为 mp3 ===
 #sudo apt-get install flac shntool lame iconv
 iconv -f GB2312 -t UTF-8 example.cue -o example_UTF-8.cue
 shntool split -t "%n.%p-%t" -f example_UTF-8.cue -o 'cust ext=mp3 lame --r3mix -b 320 --quiet - %f' example.ape -d mp3OutputDir
 
=== 批量将svg转为png ===
 for i in *; do inkscape $i --export-png=`echo $i | sed -e 's/svg$/png/'`; done
 
=== 批量缩小图片到30% ===
 for i in *; do convert -resize 30%x30% $1 sm-$1; done
 
=== 批量转换jpg到png ===
 for i in *; do convert $i `echo $i | sed -e 's/jpg$/png/'`; done
 
=== 获取jpg的扩展信息(Exif) ===
 identify -verbose xxx.jpg
 
== 压缩 ==
 
=== 增加 7Z 压缩软件 ===
 #支持 7Z,ZIP,Zip64,CAB,RAR,ARJ,GZIP,BZIP2,TAR,CPIO,RPM,ISO,DEB 压缩文件格式
 sudo apt-get install p7zip p7zip-full p7zip-rar
 
=== 增加 rar 软件压缩和解压缩支持 ===
 
 sudo apt-get install rar unrar
 
=== 解压缩 xxx.tar.gz ===
 
 tar -zxvf xxx.tar.gz
 
=== 解压缩 xxx.tar.bz2 ===
 
 tar -jxvf xxx.tar.bz2
 
=== 压缩aaa bbb目录为xxx.tar.gz ===
 
 tar -zcvf xxx.tar.gz aaa bbb