Unix

The question is a bit vague, since a PID changes with every process, and any user may be attached to that process. Please clarify what you are asking.

For Unix/Linux, use the command 'cd /'

For Windows, you can also use the same command or 'cd \'

There are many variations of the useradd command; most standard installations may not have this switch. Please identify which Unix system you are talking about.

In Bell Labs which has its headquarters in New Jersey, but has had other locations.

If you consider all the versions of Mac OS to be a "line", then the latest series, Mac OS X, would generally fit your description. However, it'd be stretching it a bit to call it "recent"; The first version of Mac OS X was released in 1999.

cp, or "copy", makes an exact duplicate of a file and puts it in the specified location. ln instead makes a "link" to the file. The advantage of using ln is that it saves space on the hard drive, and operations applied to the link will affect the target.

Some examples of the Unix find command are "find . -print" or "find /-name foo". One other command could be "find /home/wpollock/foo" or "find /tmp /var/tmp. $HOME -name foo".

Both commands are used to allow two users to communicate on a Unix system when logged in (kind of an early instant messaging system).

The 'write' command causes a line to appear on another user's terminal screen only after the sending user completes the entire line and presses the enter key.

The talk command splits the screen into two segments, allowing the two users to talk at the same time. It sends each character as the user types it, unlike 'write' which only sends complete lines. You can see exactly how quickly a user types with 'talk' but not with 'write'.

Several directories can be used to store executables, including /bin, /sbin, and /usr/bin.

The Korn shell is a command interpretor that combines the syntax and abilities of the csh shell and the sh (Bourne) shell. It was designed by David Korn of Bell Labs.

The UNIX trademark is owned by The Open Group.

A dirty page is one that has been modified and does not exist in its current state in the paging file, so it has to be written out to replace the page in the disk.

The usual indication of running as the administrator in Unix is show a prompt that contains the '#' character as either the prompt or part of the prompt.

It depends on whether the program responds to a hangup signal or not. If you start the program with a 'nohup' command then it will continue to execute.

To protect what's in the shell

Yes. There are versions of MySQL for most Unix products, including Mac OS X, as well as Linux and Windows.

Hi, You can try one of the following commands: 1) tar 2) cpio 3) dd Do a "man" of the command to get the usage syntax and options from the online man pages (e.g. "man tar") Hope this helps. - Ramki.

It is a very complex relationship that cannot be shared with the un-initiated. You must first learn to do search and replaces on arbitrary line ranges on files being edited within 'vi' before such secrets are shared.

The pipe symbol is a vertical bar (|), not a forward slash.

Something what the computer executes.

A spool.

Chillax

Linux.

AIX is a mature, stable, secure version of Unix that is backed by and supported by a large organization (IBM).

It runs on entry level servers all the way up to enterprise scalable processors. The advantages of AIX over other versions of Unix is somewhat debatable, depending on whom you talk to.