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Posted by jpluimers on 2019/06/03
–jeroen
Posted in LifeHacker, Power User | Leave a Comment »
Posted by jpluimers on 2019/06/03
The ll header field in a martian source message on linux is about the [WayBack] Ethernet frame – Wikipedia: Data Link Layer.
The first 6 hex digits are the source MAC address, the next are the destination MAC address:
May 10 08:59:24 linux kernel: IPv4: martian source 255.255.255.255 from 192.168.17.44, on dev eth1
May 10 08:59:24 linux kernel: ll header: 00000000: ff ff ff ff ff ff 00 0c 29 f7 0f fe 08 00 ........).....
In the above example:
ff ff ff ff ff ff (broadcast, which corresponds with IPv4 target 255.255.255.255)00 0c 29 f7 0f fe (specific, which I could verify after checking out the machine having IPv4 192.168.17.44)08 00 (IPv4)Some sources indicate it is a martian, as 255.255.255.255 is never a valid IP address, but [WayBack] Martian packet – Wikipedia: IPv4 disagrees.
References:
–jeroen
Posted in Ethernet, Network-and-equipment, Power User | Leave a Comment »
Posted by jpluimers on 2019/06/03
What key combination do I have to press to create a line break in a cell in Excel for Mac 2011? The Windows combination of Alt+Enter does not work on the Mac.
Source: [WayBack] keyboard – How to add a line break in a cell in Excel for Mac – Ask Different
The answer depends on the Excel for Mac OS X version you are using.
Excel 2015 is simple (thanks esham): use Option+Enter.
In older Excel <= 2011 (thanks nwinkler), use Command+Option+Enter or Control+Option+Enter.
Some users report the also need the Fn key in addition to the above modifiers.
–jeroen
PS: Later I found out that [WayBack] Beckism.com: Use a linebreak in Excel on Mac also shows the Excel <= 2011 solution Control+Option+Return (note that Return is the same key as Enter).
Posted in Apple, Excel, Mac, Mac OS X / OS X / MacOS, MacBook, MacBook Retina, MacBook-Air, MacBook-Pro, macOS 10.12 Sierra, Office, Office 2011 for Mac, Power User | Leave a Comment »
