Mac Os X: Find Out Wireless WI-Fi Connection Speed Rate

msrxp linux, training January 6, 2018
How do I see my current WI-FI (Wifi) connection speed in Apple Mac OS X?   WI-FI allows an electronic device such as Apple laptop, ipad, iPhone and other iDevices to exchange data or connect…
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Awk Floating Point Number Addition Results Are Unexpected

msrxp linux, training January 6, 2018
I am using awk to grep ‘foo’ from a text file and cacluate sum of field # 7. But, result is rounded to an integer. I need exact result such as 385858.66 and not 385858…
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Nginx Redirect Mobile / Smart Phone Traffic To Mobile Version Of the Web Site

msrxp linux, training January 6, 2018
I am a new nginx user and I would like to redirect all mobile / smart phone users from www.example.com to m.example.com domain. How do I detect a mobile phone browser in nginx? How do…
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Linux: Log Everyone Out Of The System

msrxp linux, training January 6, 2018
I can login as root user on Debian or Ubuntu/RHEL/CentOS Linux based system. I need to log everyone off (all ssh users) to install new kernel and/or hardware. How do I do this on Linux?…
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Unix: csh Shell Loop Example

msrxp linux, training January 6, 2018
C an you give me a simple loop example in csh shell in Linux or Unix like operating systems?   The C shell (csh) or the improved version, tcsh is a Unix shell that was…
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FreeBSD 9.1: HowTo Load a Kernel Module

msrxp linux, training January 6, 2018
I am a new FreeBSD Unix users. I am using FreeBSD version 9.1 and how do I load a kernel module called drm using command line option?   You need to use the kldload command.…
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Debian / Ubuntu: apt-get Force Reinstall Package

msrxp linux, training January 6, 2018
I am a new Debian Linux v.7.x / Ubuntu Linux LTS user. How do I reinstall a package using apt-get command line?   The Advanced Packaging Tool (APT) works on both Debian / Ubuntu and…
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W: TMPDIR is Mounted noexec, Will Not Cache Run Scripts Error and Solution

msrxp linux, training January 6, 2018
I mount /tmp with nodev, nosuid, and noexec options to increase the security of my Linux based web server. And, whenever I ran apt-get install or apt-get upgrade command, I am getting the following error:…
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Bash: Display Web Page Content In Terminal

msrxp linux, training January 6, 2018
H ow can I fetch HTML web page content from bash and display on screen using shell utilities?   You can use any one of the following tool or combination of all of them to…
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Linux / Unix: Shell Script Find Out In Which Directory Script File Resides

msrxp linux, training January 6, 2018
I need to find out in which directory my bash script resides so that I can read config file called .backup .ignore .target. For example, if my script resides in >/home/foo/script.sh, I need to read…
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