A computer technician should use the SFC /scan now command on a PC to restore protected system files with known good versions. This command scans system files, and will replace corrupted files.
Just type in your command line this: java -version If you have the java installed in your machine the above command show you the version installed.
cat /proc/version The above answer will only work on certain systems. For most Unix systems, use the 'uname' command to get the Unix version. AIX uses the oslevel command.
I don't think you can.
gcc --version
The BACKUP command is used to backup in DOS 6 plus version.
Sadly one you update to the latest iOS version, there is not way to downgrade or restore to an earlier version without using intricate hacks.
You can use "ver" command.
You can use "ver" command.
The "which" command returns the absolute path of the executable that is called when a command is issued. For instance, 'which firefox'. This is useful in determining whether you are using a locally compiled version or the distribution version of a program.
A listing of DOS commands are available if you type help at the command prompt. DOS commands do vary from version to version.
show?
Go to the command prompt and run "ver" command..