Author:
erics, May 28th, 2019
I use csshX on a daily basis. The default layout on my screen for three nodes is one column with three rows, one per node. This layout is excellent for visual positioning, but does make it harder to read long output. For this purpose, I start csshX using the column quantity specifier -x and I […]
Categories: How-To's, Technology Tags: apple, Column, csshX, Force, Horizontal, Mac, MacOS, macosx, Retile, Row, ssh, Terminal, Tile, Vertical
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Author:
erics, May 10th, 2019
I was getting rsync errors from one source host:
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Corrupted MAC on input. Disconnecting: Packet corrupt |
Finally tracked it down to the application “Little Snitch”. Needed to fully uninstall it and reboot to get the problem solved.
Categories: How-To's, Technology Tags: corrupt, Corrupted MAC on input, howto, Little Snitch, MacOS, macosx, Packet corrupt, rsync, Snitch, Snow Leopard, tips
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Author:
erics, February 16th, 2019
As of Mac OS X Lion 10.7, Terminal provides Services for opening a new terminal window or tab at the selected folder in Finder. They also work with absolute pathnames selected in text (in any application). You can enable these services with System Preferences > Keyboard > Keyboard Shortcuts > Services. Look for “New Terminal […]
Categories: How-To's, Technology Tags: apple, Finder, howto, Keyboard, MacOS, macosx, Menu, Mojave, Open, Services, Terminal, tips, window
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Author:
erics, February 4th, 2019
Use the ssh-keygen command on a computer to which you’ve downloaded your private key .pem file; for example: First, ensure permissions will allow ssh-keygen to work: chmod 600 /path/to/the/file/your-key-pair.pem Then generate an RSA public key: ssh-keygen -y -f /path/to/the/file/your-key-pair.pem > your-key-pair.pub
Categories: How-To's, Technology Tags: .pem, .pub, Amazon, apple, AWS, cli, howto, key, key-pair, KeyPair, Linux, Mac, MacOS, macosx, Pubkey, public, Public Key, ssh-keygen, tips
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Author:
erics, November 18th, 2018
I installed an old version of Adobe software on my new Mac and as usual, it installed some daemons that are undesirable. Here is how I got rid of them via the Terminal. Note: Adobe installs daemons in the user context, so do this as your regular user login, not as root. shell> launchctl list […]
Categories: How-To's, Technology Tags: Adobe, apple, daemon, Disable, howto, Kill, launchctl, MacOS, macosx, Shell, Stop, Terminal, tips, Unload
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Author:
erics, January 4th, 2018
I was running out of memory constantly on Yosemite 10.10.5 and found the following article: https://discussions.apple.com/message/26929324?start=555&tstart=0 Edited and reposted without permission below… Disconnect any external or secondary monitors, if any is present. The video memory allocation leak can also happen if you have a system with an integrated card, like Intel, with no external monitors […]
Categories: How-To's, Technology Tags: 10.10, howto, Leak, macosx, Memory, Memory Leak, PRAM, PRAM Reset, Reset, SMC, SMC Reset, tips, Yosemite
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Author:
erics, April 12th, 2017
You can associate a file extension with an app (such as MacVim) via the “Info dialog”. Just select the file and hit Cmd-i, then go to the “Open with” tab, select app and hit “Change all…”. This will change the default application for that file type.
Categories: How-To's, Technology Tags: App, apple, howto, Log, Mac, MacOS, macosx, Open, tips
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Author:
erics, April 11th, 2017
Press Option+Space and the cursor will change to the grab hand move tool. Roll your mouse wheel for vertical scrolling, hold down shift to switch to horizontal scroll mode.
Categories: How-To's, Technology Tags: apple, Cursor, Grab, Hand, howto, macosx, Mouse, Move, Preview, tips
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Author:
erics, February 4th, 2017
Make sure you have Ghostscript installed, then:
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gs -dNOPAUSE -dBATCH -sDEVICE=pdfwrite -dCompatibilityLevel=1.4 -dPDFSETTINGS="/ebook" -sOutputFile=output.pdf input.pdf |
-dPDFSETTINGS={value} where {value} is one of: /screen – the lowest resolution and lowest file size, fine for viewing on a screen /ebook – mid-range resolution and file size /printer – high-quality setting used for printing PDFs /prepress – high-quality setting used for printing PDFs As always, YMMV…
Categories: How-To's, Technology Tags: Adobe, cli, Command line, Ghostscript, gs, howto, Linux, macosx, PDF, Reduce, Resize, Smaller, tips
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Author:
erics, January 29th, 2017
I wanted to send email from cron for various reasons, but the emails would bounce with an error 554: 554 5.1.8 : Sender address rejected: Domain not found Clearly, Postfix was using the “internal” hostname of myappledesktop.local (MacOSX has TWO hostnames! also, myappledesktop.local is not the real hostname ;-). So, I needed two things: 1. […]
Categories: How-To's, Technology Tags: 10.10.5, Bounce, cli, Command line, Email, FQDN, howto, macosx, mail, main.cf, PostFix, Send, tips, Yosemite
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