Mac OS X

Tutorials, tips, hints, software, and howtos about Apple Mac OS X Unix operating system including MacBook Pro, MacAir, Mac Mini and server edition. ( rss feed )

I need to tunnel X Window securely over SSH bases session so that I run X program on my remote Linux/Unix server/workstation and get back display to my Apple Macbook pro laptop. I tried the ssh -X user@server1 and ssh -Y user@server2 commands on both OS X Mountain Lion and Apple OS X Mavericks/Yosemite. But, I am unable to use the ssh command with X11.

How do I fix this problem on OS X and enable X11 forwarding with ssh command? How do I install XQuartz ( server on Apple OS X Mountain Lion or Mavericks or Yosemite?


I‘m using CentOS 7 server. I need to run a command when I logout using ssh or bash shell. So in Linux and Unix-like systems, how can I run a command to execute when I log out my session?

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I‘m a new Linux, OS X or Unix-like system users. I’m using bash shell. I made changes to my $HOME/.profile ($HOME/.bash_profile) file. How can I restart my session without doing logout and login again?


I want to extract tar file to specific directory called /tmp/data. How can I extract a tar archive to a different directory using tar command on a Linux or Unix-like systems?


I‘m a new Unix system user. How can I manage process on a FreeBSD operating systems?


My new Dell Laptop has no DVD or CD drive. I’m trying to create a bootable Fedora Linux 20 USB using UNetbootin utility as described here. But, UNetbootin failed to create bootable USB image on OS X. How do I create Fedora Linux 20 USB Media in Apple OS X using command line options?


I‘m a new Apple OS X Mabbook user. I am getting an error which read as follows when I connect to any remote Linux/Unix/BSD server or machine through OS X ssh Terminal app:

Last login: Wed Mar 26 08:45:36 2014 from
-bash: warning: setlocale: LC_CTYPE: cannot change locale (UTF-8): No such file or directory

How do I fix this error?