You might have first used UNIX a long ago but if you haven’t then here is x86 port to try it for the first time pretty easily on a virtual machine.
Start exploring using commands cat ~cd ed diff egrep file pwd size.
cd /etc
pwd
file passwd
cat passwd
UNIX’ers: how do I use less or more to preview a file?
I can’t find the git 2.10 binary so I run
which git
/usr/local/bin/git
Excellent, found it.
And then I check it’s version to verify I am looking at the right version
/usr/local/bin/git –version
git version 2.21.0
Oops that isn’t what I wanted.
There must be another git getting loaded earlier in the search path.
Here is how to find out where all copies of git live
type -a git
git is /usr/local/bin/git git is /usr/local/bin/git git is /usr/bin/git
Look for the right git at version 2.10
/usr/local/bin/git –version
/usr/bin/git –version
git version 2.21.0 git version 2.14.3 (Apple Git-98)
I want the second one.
That is how to track down the location of a binary file on macOS that appears multiple times in the search path.
You might ponder this question while you are taking a drink at the bubbler.
(defun help/save-all-file-buffers ()
"Saves every buffer associated with a file."
(interactive)
(dolist (buf (buffer-list))
(with-current-buffer buf
(when (and (buffer-file-name) (buffer-modified-p))
(save-buffer)))))
Last year I searched for a monitor with these attributes:
The ASUS VS239H-P 23-Inch Full HD 1920×1080 IPS HDMI DVI VGA Back-lit LED Monitor is my winner: it meets all of the criteria.
It is easy to use and looks great. One year old it still is selling well. It is an easy purchase because 8,299 owners ranked it a 4.5/5 so I’m not alone here.
Now join the club.
Save a few mouse drags and clicks to open Finder by pressing Option(alt)-Command(⌘)-Space.
It is even faster than hitting Control-Space to start Spotlight.
This page shows common errors that Bash programmers make. These examples are all flawed in some way.
You will save yourself from many of these pitfalls if you simply always use quotes and never use WordSplitting for any reason! Word splitting is a broken legacy misfeature inherited from the Bourne shell that’s stuck on by default if you don’t quote expansions. The vast majority of pitfalls are in some way related to unquoted expansions, and the ensuing word splitting and globbing that result.
All of us have fallen into one of these pits.
Why not use Python instead? 🙂
Oh yea, non-interactive shells 😠.
More on Quotes and Word Splitting.
Here are my questionable credentials to make this claim.
go vet shadow warns of variable shadowing. That is where you declare a variable with the same name, in the same scope.
Do you dare enable it?