Not sure what mkdir did in this case?

gvilkas · 02-15-2018, 12:01 PM

I was trying to follow some instructions to set up a lineage OS build package on my latest version of Lubuntu PC. Everything was going ok until I got to a step that says now set up your directories for your build environment. To create them:

mkdir -p ~/bin
mkdir -p ~/android/lineage

so I enter them in the terminal window at the line that says root@PC:/home/user/# and then nothing happens... no confirmation or error and the same root... line reappears. which is normal i believe.

if I put in the command ls in the /home/user i dont see anything there by those names. If i check the higher directories nothing there either until I get to / where I find bin but as it is full of stuff I doubt I created that.

but when I enter the CD command by itself i get ~# then if i enter ls I immediately see android bin home.

But of course I dont understand where that is found? what directory have I ended up in?

Can anyone explain what I misunderstand here please and what I should do? Many thanks

George

BW-userx · 02-15-2018, 12:17 PM

if you want confirmation use the -v switch/option
created parent dir and subdir and tells you want you did

Code:

mkdir -pv ~/partent/subdir/subdir/subdir

if you are in su off of a user then where are you at and as who?

Code:

userx@slackwhere:~
$ su
Password: 
root@slackwhere:/home/userx
# mkdir -pv ~/somesilling/song/oer
mkdir: created directory '/root/somesilling'
mkdir: created directory '/root/somesilling/song'
mkdir: created directory '/root/somesilling/song/oer'

root@slackwhere:/home/userx
# rm -rv ~/somesilling
removed directory '/root/somesilling/song/oer'
removed directory '/root/somesilling/song'
removed directory '/root/somesilling'

I am in my user but look here

Code:

root@slackwhere:/home/userx
# pwd
/home/userx
root@slackwhere:/home/userx
# ls ~/
Desktop    GNUstep        install-nutyx.md5sum  kodi                   test
Downloads  install-nutyx  jdk

when I Print Working Directory (pwd) I get my user logged in as su
but when I List Directory (ls) as su in user I get root home dir because I am root, ( not to mistaken as I am groot), if I su - (hyphen) I go into my root home directory.

Code:

root@slackwhere:/home/userx
# su -

Have a nice day!

root@slackwhere:~# pwd
/root

environment changes ...
so when you where logged in as su under a user then issued you cd to change directory to your home dir who where you when you did that? It determines where you will end up at.

Code:

userx@slackwhere:~
$ su
Password: 
root@slackwhere:/home/userx
# pwd
/home/userx
root@slackwhere:/home/userx
# cd
root@slackwhere:~
# pwd
/root
root@slackwhere:~
#

Mostly you just need to keep in mind what su and su - do when you're in your terminal as far as directory path placement and rights, for more on that look up "environment variables" linux su su - sudo user

gvilkas · 02-15-2018, 12:51 PM

Quote:

Originally Posted by BW-userx

if you want confirmation use the -v switch/option
created parent dir and subdir and tells you want you did
[code]...
Mostly you just need to keep in mind what su and su - do when you're in your terminal as far as directory path placement and rights, for more on that look up "environment variables" linux su su - sudo user

Thank you I will study your suggestions.

fatmac · 02-15-2018, 01:16 PM

Quote:

root@PC:/home/user/#

The directories you just made

Quote:

mkdir -p ~/bin
mkdir -p ~/android/lineage

will be found here, or else in /root.

ondoho · 02-15-2018, 01:42 PM

gvilkas, everything you posted in #1 is normal and expected behavior.
'~' is an abbreviation for $HOME, which is the current user's home directory.
since you did these things as root, $HOME would be /root (although for the normal user it's /home/gvilkas or similar).

btw, with 'pwd' you can always find out your present working directory.

gvilkas · 02-15-2018, 07:25 PM

Quote:

Originally Posted by ondoho

gvilkas, everything you posted in #1 is normal and expected behavior.
'~' is an abbreviation for $HOME, which is the current user's home directory.
since you did these things as root, $HOME would be /root (although for the normal user it's /home/gvilkas or similar).

btw, with 'pwd' you can always find out your present working directory.

I forgot all about that . thanks.