Command Line Stuff I Use

Last updated: 28-Oct-2021

This is a blog post where I share various commands for use in the terminal. Mostly, I add new commands here when I find them and when someone shares something useful with me. This blog post helps me keep all these commands in a single place.

Search Files and Folders for Code

When working with Kevin Cristiano of Tadpole Collective, I picked up a very useful command to search files and folders for a string of code.

grep -iRn ‘wp_searching_for_something’ .

To break that command down a bit, here’s an explanation as I understand it:

grep is a command-line utility for searching plain-text data sets for lines that match a regular expression;
-i tells the search to work in a case insensitive way – that is, search for the string regardless of uppercase or lowercase letters;
R makes the search recursive;
n tells the search to output the specific line number in any files where the string is found;
'wp_searching_for_something' is the specific string for the search; it’s important to include the single quote marks; and
. at the end tells the search to run in the current directory.

Dig

This command is useful when troubleshooting DNS issues. This was shared with me by Daniel Olson.

dig A domain.com +short
dig A www.domain.com +short
dig CNAME domain.com +short
dig CNAME www.domain.com +short

Find Nameserver Details

These short commands were shared with me by the coffee-loving Jan Dembowski.

dig ns domain.com

dig ns domain.com +trace

Get TXT Records for a Domain

The following command is a clean way to get the basics on TXT records, which is helpful when looking to verify authorization over a domain.

dig -t txt example.com +short

Curl -I

I can’t recall the value of this but I used it once and it was pretty helpful. I think Daniel Olson shared this with me as well. For what it’s worth, curl is short for “Client URL”.

curl -I https://www.domain.com/

Hide Desktop Icons

I found this wonderful technique in a blog post and copied it here for my own future reference.

Hiding the Icons

defaults write com.apple.finder CreateDesktop false

killall Finder

Bringing the Icons Back

defaults write com.apple.finder CreateDesktop true

killall Finder

Git Commands

Git Diff

When looking to compare what has been changed in files, you can run a Git command to show you, as shared with me by Kevin Cristiano of Tadpole Collective.

git diff

Git Stash

Kevin also taught me about Git stash, which can be use to remove changes to a file.

git stash

Or bring those changes back …

git stash pop

Commands on Digital Ocean

To change from issuing commands as the root user to the www-data user in a Digital Ocean droplet, you can use the following command within the droplet console. Once you can run wp-cli commands. (As with so many commands on this page, this too was shared by Kevin Cristiano.)

sudo -u www-data