for real though, modern linux distros will rarely require you to enter a command line, and if you do, a quick internet search can usually help you find out what you need to enter
for real though, modern linux distros will rarely require you to enter a command line, and if you do, a quick internet search can usually help you find out what you need to enter
I've lived in various Unix terminals for the last decade+ and cmd.exe scares the shit out of me. Well no it doesn't, but I hate it and I'm always pretty sure I'm about to brick the whole computer. Which is an improvement tbf if it's running Windows
it's awesome how every tutorial on how to change anything deep about Windows starts with "Hit
Win+R
and typeregedit.exe
. WARNING: Editing your Windows registry can have potentially catastrophic results for your system. Please make a restore point before following this tutorial."Meanwhile it's 100% possible to torch your system without warning with
rm -rf
in the wrong place and I love that.what's rm-rf?
rm
is the unix command for remove — it deletes files and directories.The
-r
flag, or--recursive
recursively traverses all the directories in the path file that you specify (so like if you have a directorystuff/
which has filesa.txt
,b.pdf
, and subdirectoryc/
thenrm -r stuff/
would remove both files as well asc/
and its contents.The
-f
flag, or--force
, does what it says on the tin: it deletes everything without prompting you or warning you about what it's going to delete.So it's possible to delete all the files on your system — including ones that the operating system needs to run — with
rm -rf /
. It's very hard to do on accident these days — usually you need superuser permissions (thesudo
insudo rm -rf /
) which requires you to enter your administrator password and to also pass the flag--no-preserve-root
which was created to keep people from deleting their whole system because someone named pigpoopballs69 on a random forum said to runsudo rm -rf /
To be fair, doing registry editing in Windows can end that way to. Or deleting system 32.
Oh yeah totally. I'm biased by my experiences, but I think there's much more of a risk with Windows, you have to go pretty far out of your way to actually nuke your whole system with
rm
, it's very hard to do on accident. Now,dd
on the other hand...So what would happen if you just did "rm stuff/" without the recursive flag? Shouldn't it work the same way and delete all of stuff/ contents?
also how do you do that code font thingy
deleted by creator
is a subdirectory basically the linux version of a folder?
deleted by creator
https://unix.stackexchange.com/questions/44967/difference-between-cp-r-and-cp-a
rm stuff/
without the recursive flag fails with an error (rm: cannot remove 'stuff': Is a directory
) and doesn't remove anything. I'd guess the decision there was to have the least-destructive end result for ambiguous behavior, but I'm not entirely sure what the history is there, pretty sure that command is older than I am :)The code font thingy is the back tick character: `
Why is cmd.exe scarier than unix terminals?
in my experience it's quirky and inconsistent in ways that make it easy to make mistakes that make your computer unusable
Not to mention you use it so rarely you'll consistently type unix commands out of habit, followed by a quick bout of swearing.
Like a lexical off by one error