Mac OS X Archives - Garbage In Garbage Out https://gigoblog.com/tag/mac-os-x/ Tech tips & other words Mon, 03 Nov 2025 17:28:32 +0000 en-US hourly 1 Clear Mac OS DNS cache via command line https://gigoblog.com/2025/10/28/clear-dns-cache-in-mac-os-via-command-line-all-versions/ https://gigoblog.com/2025/10/28/clear-dns-cache-in-mac-os-via-command-line-all-versions/#respond Tue, 28 Oct 2025 10:52:59 +0000 http://www.gigoblog.com/?p=631 The method for clearing or flushing the local cache in Mac OS has changed over the years. Here are all the Mac OS versions on one page that details how to clear Mac OS DNS cache via command line. TLDR; Add this alias to your .zshrc file: alias flushdns="sudo killall -HUP mDNSResponder;sudo killall mDNSResponderHelper;sudo dscacheutil […]

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]]> https://gigoblog.com/2025/10/28/clear-dns-cache-in-mac-os-via-command-line-all-versions/feed/ 0 Make your Mac chime at startup again https://gigoblog.com/2020/04/22/make-your-mac-chime-at-startup-again/ https://gigoblog.com/2020/04/22/make-your-mac-chime-at-startup-again/#respond Wed, 22 Apr 2020 15:24:34 +0000 http://gigoblog.com/?p=712 I miss the startup chime on my MacBook Pro. Make your Mac chime on startup again! To enable it, open up terminal and type: sudo nvram StartupMute=%00 To disable it, either reset your parameter RAM by pressing Command-Option-P-R at startup, or in terminal type: sudo nvram StartupMute=%01

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]]> https://gigoblog.com/2020/04/22/make-your-mac-chime-at-startup-again/feed/ 0 Colorize your Terminal shell on Mac OS https://gigoblog.com/2019/10/09/colorize-your-terminal-shell-on-mac-os/ https://gigoblog.com/2019/10/09/colorize-your-terminal-shell-on-mac-os/#respond Wed, 09 Oct 2019 15:09:35 +0000 http://gigoblog.com/?p=692 You need to add color into Mac OS terminal. Apple’s default settings for BASH are less than lovely — just shades of gray. Here’s how to add color to BASH for your visual enjoyment. Here’s what we’re going to create: From Terminal, edit your .bash_profile: vi ~/.bash_profile Add to it: export PS1="\[\033[36m\]\u\[\033[m\]@\[\033[32m\]\h:\[\033[33;1m\]\w\[\033[m\]\$ " export CLICOLOR=1 […]

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]]> https://gigoblog.com/2019/10/09/colorize-your-terminal-shell-on-mac-os/feed/ 0 Configure NPM for global user without sudo on Mac OS https://gigoblog.com/2019/10/09/configure-npm-for-global-user-without-sudo-on-mac-os/ https://gigoblog.com/2019/10/09/configure-npm-for-global-user-without-sudo-on-mac-os/#respond Wed, 09 Oct 2019 15:00:33 +0000 http://gigoblog.com/?p=685 Have you ever wanted to configure NPM for global user without sudo on Mac OS? Using ‘sudo’ with NPM is a no-no, as it can cause all kinds of havoc with file permissions. But there is a way to avoid this heartache and misery! You can specify a default directory for globally installed packages and […]

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]]> https://gigoblog.com/2019/10/09/configure-npm-for-global-user-without-sudo-on-mac-os/feed/ 0 Fix for Command & Conquer: Generals crashing in Mac https://gigoblog.com/2017/01/25/fix-command-conquer-generals-crashing-on-mac/ https://gigoblog.com/2017/01/25/fix-command-conquer-generals-crashing-on-mac/#respond Wed, 25 Jan 2017 23:14:55 +0000 http://www.gigoblog.com/?p=658 Command & Conquer: Generals crashing on Mac? As any Mac user knows, running Command and Conquer Generals (including Zero Hour) tends to crash on startup on a Mac running OS X. Here’s how to fix it. Launch “Activity Monitor”, and from the “View” menu, choose “All Processes.” Then, search for “gamed”. If it shows up […]

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]]> https://gigoblog.com/2017/01/25/fix-command-conquer-generals-crashing-on-mac/feed/ 0 Remove TimeMachine Backups.backupdb file manually via terminal command line https://gigoblog.com/2014/12/23/remove-timemachine-backups-backupdb-file-manually-via-terminal-command-line/ https://gigoblog.com/2014/12/23/remove-timemachine-backups-backupdb-file-manually-via-terminal-command-line/#respond Tue, 23 Dec 2014 14:19:43 +0000 http://www.gigoblog.com/?p=636 I recently needed to delete the Backups.backupdb file via command line using the rm command. However, sudo user can’t do it, and neither can root. What’s a guy to do? I needed to delete all backups for a specific host named “mini”. Some research showed a method using TimeMachine Safety Net: sudo /System/Library/Extensions/TMSafetyNet.kext/Helpers/bypass rm -Rfv Backups.backupdb […]

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]]> https://gigoblog.com/2014/12/23/remove-timemachine-backups-backupdb-file-manually-via-terminal-command-line/feed/ 0 Firewall locked you out of screensharing on OS X? https://gigoblog.com/2014/11/13/firewall-locked-you-out-of-screensharing-on-os-x/ https://gigoblog.com/2014/11/13/firewall-locked-you-out-of-screensharing-on-os-x/#respond Thu, 13 Nov 2014 21:17:13 +0000 http://www.gigoblog.com/?p=626 Sadly, I had this experience lately. Even though I had the firewall explicitly set to allow connections using Screen Sharing, for some reason my Mavericks OS X 10.9 server hiccuped and I couldn’t access it via screen sharing. Here’s how I resolved my dilemma: I was thankfully able connect via SSH; so I first checked […]

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]]> https://gigoblog.com/2014/11/13/firewall-locked-you-out-of-screensharing-on-os-x/feed/ 0 Clear the DNS cache on Mac OS https://gigoblog.com/2014/05/19/clear-dns-cache-on-os/ https://gigoblog.com/2014/05/19/clear-dns-cache-on-os/#comments Mon, 19 May 2014 14:14:08 +0000 http://www.gigoblog.com/?p=602 So you want to clear the DNS cache on Mac OS X Mavericks through the now-current Mac OS 26? Well, Mac OS  since ‘Mavericks’ has some DNS changes under the hood. Unlike previous versions, to effectively clear the cache you need to execute these two commands in Terminal: dscacheutil -flushcache;sudo killall -HUP mDNSResponder Add this […]

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]]> https://gigoblog.com/2014/05/19/clear-dns-cache-on-os/feed/ 1 Test whether outbound port is open on Mac OS X 10.9, 10.8, 10.7 https://gigoblog.com/2013/12/02/test-if-outbound-port-is-open-on-mac-os/ https://gigoblog.com/2013/12/02/test-if-outbound-port-is-open-on-mac-os/#respond Mon, 02 Dec 2013 14:56:08 +0000 http://www.gigoblog.com/?p=588 Wondering if a certain outbound port on your Mac is open or closed? Here’s a way to determine outbound open ports on Mac OS using netcat via the command line in terminal. We’ll use  using a free service from portquiz.net. From the terminal, enter: nc -v portquiz.net 443 where 443 is the port number you want […]

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]]> https://gigoblog.com/2013/12/02/test-if-outbound-port-is-open-on-mac-os/feed/ 0 Enable USB install option in Bootcamp 5 https://gigoblog.com/2013/04/30/enable-usb-install-option-in-bootcamp-5/ https://gigoblog.com/2013/04/30/enable-usb-install-option-in-bootcamp-5/#comments Tue, 30 Apr 2013 18:03:56 +0000 http://www.gigoblog.com/?p=396 Apple prevents computers with USB drives from installing Windows from a USB flash drive on certain models. While it works flawlessly on my current gen MacBook Air, installing Windows 7 off a USB key doesn’t work on my iMac. Luckily, the fix is easy… From the System Information app (located in the Utilities folder on […]

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