1  
   2  #!/bin/bash
   3  
   4  # decompress - will decompress a file, regardless of compression type.
   5  
   6  Z="compress -d"
   7  gz="gunzip"
   8  bz="bunzip2"
   9  zip="unzip -qo"
  10  rar="unrar x -id -y"
  11  tar="tar xf"
  12  7z="p7zip -d"
  13  
  14  if [ $# -eq 0 ]; then
  15      echo "Usage: decompress file or files to decompress">&2
  16      exit 1
  17  fi
  18  
  19  for name
  20  do
  21  	if [ ! -f "$name" ] ; then
  22  		echo "$0: file $name not found. Skipped." >&2
  23  		continue
  24  	fi
  25  
  26  	if [ "$(echo $name | egrep '(\.Z$|\.gz$|\.bz2$|\.zip$|\.rar$|\.tar$|\.tgz$|\.7z$)')" = "" ] ; then
  27  		echo "Skipped file ${name}: it's already decompressed." 
  28        		continue
  29  	fi
  30  
  31  	extension=${name##*.}
  32  
  33  	case "$extension" in
  34  		Z ) echo "Filetype is Z. Decompressing..."
  35  		    $Z "$name"
  36  		    ;;
  37  		gz ) echo "Filetype is gz. Decompressing..."
  38  		     $gz "$name"
  39  		     ;;
  40  		bz2 ) echo "Filetype is bz2. Decompressing..."
  41   		     $bz "$name"
  42  		     ;;
  43  		zip ) echo "Filetype is zip. Decompressing..."
  44  		      $zip "$name"
  45  		      ;;
  46  		rar ) echo "Filetype is rar. Decompressing..."
  47  		      $rar "$name"
  48  		      ;;
  49  		tar ) echo "Filetype is tar. Decompressing..."
  50                	      $tar "$name"
  51                	      ;;
  52  		tgz ) echo "Filetype is tgz. Decompressing..."
  53                	      $tar "$name"
  54                       ;;
  55                 7z ) echo "Filetype is 7z. Decompressing..."
  56                       $7z "$name"
  57  	esac
  58  
  59  done
  60  
  61  exit 0