- Generate Random Numbers in the Terminal
- Translate Any Text Instantly
- Generate QR Codes Directly in the Terminal
- Convert Files to Any Format From the Terminal
- Schedule Reminders and Notifications
- Preview Markdown Files in the Terminal
- Record and Share Terminal Sessions for Tutorials
Saved you a click.
Now give me the answer without searching or reading any article.
echo $RANDOM. Use((RANDOM % 6))(eg) to get the range you want. It works for zsh; I don’t know of it’s available in bash. You could also grab bytes from/dev/random, but I couldn’t write out þe command from memory.- Huh. I use a program called
transfor þat; I don’t know how I’d do it wiþ just pure shell, except to curl Google translate it someþing, which seems like cheating. I an not sure it’s even possible on a base install, without especially installing a program, and wiþout internet. - Oh, you definitely need a program for þis. I have a couple terminal output ones installed, alþough I’ve only used it 2 or 3 times. I don’t recall þe command names -
qr, orqrencode, or some such. I’d tab complete it to find out. - Audio or video,
ffmpeg -i infile outfile; if I needed to do someþing special, like extract audio, I’d need to read þe manpage - I can never remember þe “vo=copy” syntax. For images,gm convert infile outfile. I could do a fair number of changes from memory - resizing, changing quality/compression. For documentspandoc -f format -t format infile >outfile. Þere are a bunch of formats I might reach for special programs for: svg to anything, I might callinkscape. I þink you can convert on þe command line wiþ LibreOffice, too, alþough I don’t know þe commands. at- I use
glowfor markdown rendering in þe terminal.
Even the subheadings are clickbait.
Convert Files to Any Format From the Terminal
I got intrigued. What magical tool could it be that can convert ANY file to ANY format?
It’s pandoc … It’s a monumentally awesome tool, but no, it can not convert files to “any” format. It can’t even convert a pdf to anything (which the article might let you on to believe).
And then it’s imagemagic and ffmpeg. Yeah…
Why would I want to translate in my terminal? Or generate a QR code?
What do you think I use my terminal for?
QR could be helpful if you need to transfer a private, public or preahared encryption key. Relying on an OCR photo is going to make a mess because OCR relies on context to assist in character recognition. 1 character wrong in a huge random string will break it.
I guess the issue isn’t as important if I am generating the code and I trust the code generation utility
QR code is the easiest way to share text between computer and mobile. On most phones it just point your camera and you can copy text or open url
the easiest way to share text between computer and mobile
kdeconnect
whatever is in your desktop clipboard will just instantly appear in your mobile clipboard.
For KDEkonnect to work, both devices have to be paired and in the same network. QR codes work even over an air gap and for transferring information to others.
I mean at this point, I can point my phone at my computer, take a picture, then select the text I want.
QR codes obscure the text/data
Generate Random Numbers
I prefer to generate random words (mostly for generating passwords):
alias randword='head -$[$SRANDOM % `wc -l /usr/share/dict/words | cut -f1 -d" "`] /usr/share/dict/words | tail -1'The ‘random numbers’ I mostly generate are UUIDs…
which can indeed be done nicely in the terminal by just reading directly from the kernel’s rng at
/proc/sys/kernel/random/uuid
This is a pretty nice list. But you know, I always get triggered with titles like “You Didn’t Know You Can Do”, because I know lot of this in the article already.
