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Mac OS X

How to delete a single command from history on a Linux, OS X and Unix Bash shell

I‘m working in Ubuntu bash terminal application and remotely on a RHEL server in cloud platform. I typed the wrong and dangerous command. I no longer wish to remember dangerous command in the history file. How can I remove or delete a single command from bash history file?
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How to secure and lock down Apple OS X 10.11 (El Capitan) with osxlockdown

Is there is an easy way to audit and lock down (secure) Apple OS X 10.11 (El Capitan) unix operating system?
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How to find out zone information for given country on Linux or Unix

How do I find out the current time for each zone name specified on the command line on a Linux, FreeBSD, OS X or Unix-like system? How do I report time zone information for Singapore or Japan on the command line?
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How to find out Mac OS X operating system version information from Terminal command prompt

I use ssh client to login into my Mac Min server without GUI. How can I tell what version of Mac OS X operating system am I using command prompt? How do I find out Mac OS X version from Terminal app bash shell?
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How to summarize detailed system resource usage for given command on a Linux or Unix

How do I determine the system resource usage during of execution of a particular command on a Linux, OS X Unix, BSD and Unix-like operating system?
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How To Update Apple OS X Using Command Line Software Update Tool

How do I install software updates from the command line tool on my Apple Mac OS X computer? How can I remotely update my Apple computer by just sshing into a system? Is there is something like apt-get command or yum command for Apple OS X?
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How To Find Out If 32 or 64 bit Unix OS Installed On Server

I‘m a new Unix system user. How can I determine if 32 or 64 bit OS is installed on my Unix server?
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How To Install FreeBSD on Raspberry Pi 2 Model B

How do I install FreeBSD 10 or FreeBSD 11 (current) on Raspberry Pi 2 Model B? How do I flash the SD Card using Linux, OS X, FreeBSD or Unix-like operating system?
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How To Create Disk Image on Mac OS X With dd Command

How do I create or write to images to disk on Apple Mac OS X Unix operating system with dd command?
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How To: Restart Apple Mac OS X Airport Networking From the Bash Terminal

How do I enable and/or disable networking (AirPort) Ethernet and Wireless from the bash command Line in Apple Mac OS X? How can I restart Wi-Fi via command Line in OS X?
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