Cli on Arthur Nørve

Dotfiles

Tue, 13 Jun 2023 12:55:20 -0700

Common approaches

bare repo + cli magic (with working tree as home directory)
repo + cli magic (with working tree as home directory)
repo + symlinks from home directory
repo + install script (manual copy)

Dig and DNS

Thu, 16 Dec 2021 15:56:33 +0100

Inspired by Julia Evans’ post: How to use dig

DNS is basically responsible for translating domain names to actuall IP addresses so that your computer can send your requests to the right server in the network.

Reverse DNS lookup

in-addr.arpa is the domain used for reverse IPv4 lookup
op6.arpa is for reverse IPv6 lookup

Here the IP in question is added as a subdomain in front of the ones in the list above. The DNS info is given in the response.

MacOS Terminal

Thu, 14 Jan 2021 19:18:35 +0100

A collection of tools, commands, tips and tricks for using the terminal and shell on mac OS (and in some manners in general)

macOS specific

Some shell commands that are specific to macOS.

## Pasteboard
pbcopy
pbpaste

## Utilities
mdfind # find files on system
screencapture 
launchctl # macOs launch agent

# Cocoa text engine (you can convert pages docs and more!)
textutil

# MacOs native image editing
sips

General

# Directory stack
pushd
popd


# Shell History
# This is the command that backs `history`
fc [number]     # edit command [number]
fc -l [count]   # list [count] history entries
fc -E 			# with EU dates
fc -i 			# with ISO dates
fc -I 			# only history from current shell session

git

1
2
3

git format-patch [branch] --stdout > [file]
git am [file]
git apply [file] # same as git am

Unix Essentials

xargs
find

grep
sort
uniq
wc
cut

sed
jq

cat
head
tail
more
less

Improved `man`

This opens manual entries in a new yellow terminal window. iTerm cannot open these sorts of pages so you have to use a workaround if your main terminal app isn’t Terminal.app:

MySQL on the CLI

Fri, 18 Dec 2020 15:36:22 +0100


# Import - execute SQL
mysql -u username -p dbname < db.sql


# Export - db dump
mysqldump -u username -p dbname > db.sql

SFTP on the CLI

Fri, 18 Dec 2020 15:36:16 +0100


# Login
sftp user@host


# Navigation in interactive mode

? 				# print help menu
pwd 			# current dir
cd 				# move to dir
ls 				# list dirs
get [-r] <FILE> # download file 
df -h <FILE>	# print sizes

regex og sed

Thu, 03 Jan 2019 19:55:00 +0200

Kraftfulle verktøy er ikke bare for nerder.

Mange ganger når jeg laster jeg tekst fra internett trenger teksten og endres på en eller annen slags måte. Feks. når jeg laster jeg vokabularlister trenger jeg ofte å renske ut alle de ekstra tegnene folk putter inn, i tillegg må de restruktureres slik at de ender opp i csv formatet.

For mange er ‘søk og erstatt’ funksjonen en god redning, men til flere typer oppgaver er rett og slett ikke denne god nok. Det er her regex eller Regular Expressions kommer inn, disse lar deg søke etter spesielle mønster og hente ut akkurat det du vil ha.