touch -t 0712250000 file1 #修改一个文件或目录的时间戳 - (YYMMDDhhmm) file file1 outputs the mime type of the file as text iconv -l #列出已知的编码
iconv -f fromEncoding -t toEncoding inputFile > outputFile creates a new from the given input file by assuming it is encoded in fromEncoding and converting it to toEncoding.
find . -maxdepth 1 -name *.jpg -print -exec convert "{}" -resize 80x60 "thumbs/{}" ; batch resize files in the current directory and send them to a thumbnails directory (requires convert from Imagemagick)