Unzip All Files In A Directory

I have a directory of ZIP files (created on a Windows machine). I can manually unzip them using unzip filename, but how can I unzip all the ZIP files in the current folder via the shell?

Using Ubuntu Linux Server.

This works in bash, according to this link:

unzip \*.zip

Just put in some quotes to escape the wildcard:

unzip "*.zip"

The following bash script extracts all zip files in the current directory into new dirs with the filename of the zip file, i.e.:

The following files:

myfile1.zip
myfile2.zip 

Will be extracted to:

./myfile1/files...
./myfile2/files...

Shell script:

#!/bin/sh
for zip in *.zip
do
  dirname=`echo $zip | sed 's/\.zip$//'`
  if mkdir "$dirname"
  then
    if cd "$dirname"
    then
      unzip ../"$zip"
      cd ..
      # rm -f $zip # Uncomment to delete the original zip file
    else
      echo "Could not unpack $zip - cd failed"
    fi
  else
    echo "Could not unpack $zip - mkdir failed"
  fi
done