ant Permission Denied problem
If you own the file, try
chmod u+x /path/opt/apache-ant-1.8.2/bin/antIf someone else owns it, either sudo or become root then
chmod 755 /path/opt/apache-ant-1.8.2/bin/antYou need to have execute permissions on the file; the first gives execute permissions to the owner only and is probably preferable if you own the file and are the only one that uses it. The second requires root privileges and gives execute and read permission to everyone, plus write permission to the owner.
You can view the current permissions and ownership of the file by running ls -l /path/opt/apache-ant-1.8.2/bin/ant.