Ask Ubuntu General Room

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2:58 AM

Q: How do I build the mainline kernel with all default Ubuntu modules?

My normal way of building a mainline kernel has been: $ sudo apt build-dep linux $ git clone git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git $ cd linux $ make localmodconfig $ make -j`nproc` deb-pkg And off I go. However, I'd like to build a kernel that includes the same modul...

Zanna

3:41 AM

@AskUbuntuMeta no!

4 hours later…

Jacob Vlijm

7:13 AM

Interesting message after many years of Ask Ubuntu and at 65,000 rep. Must be a tiny bug. ^

2 hours later…

Rinzwind

9:32 AM

LOL

Benny

Happy Purim!

1 hour later…

Ubuntu Questions on U&L

10:57 AM

Q: About the use of sshfs between multiple servers

For now, I can use ssh -p 2222 username@ip1 to login in a jumpserver, which will have a option to login in target server with ip2 by 1) Enter ID directly login or enter part IP, Hostname, Comment to search login(if unique). 2) Enter / + IP, Hostname or Comment search, such as: /ip. 3) Enter p...

ubuntu mount sshfs

Ubuntu Questions on U&L

11:37 AM

Q: uArm movement through python 3

import pyuf import time from time import sleep from pyfirmata import Arduino from uf.wrapper.swift_api import SwiftAPI swift=SwiftAPI() port = '/dev/ttyUSB0' board = Arduino(port) swift.set_position(x=250,y=0,z=50,speed=1000000) I have written a code in python,ubuntu environment to set position ...

ubuntu python arduino

3 hours later…

Shubham

3:02 PM

Quick Question: A line in my Dockerfile is:

    mkdir -p /opt/company/services/{apps,conf,bin}

But the directory structure formed in the container is like following:
    drwxr-xr-x 2 root root 4096 Mar 20 14:56 apps
    drwxr-xr-x 2 root root 4096 Mar 20 14:56 bin
    drwxr-xr-x 2 root root 4096 Mar 20 14:56 conf
    drwxr-xr-x 2 root root 4096 Mar 20 14:56 {apps,conf,bin}

I don't want the last one, what should I do?

Rinzwind

a downvote on a 293 upvoted answer. weird :P

@Shubham 1st guess: you are not using bash. { and } is bash brace expansion

Shubham

@Rinzwind This command is inside a Dockerfile and the base image that I am using is Ubuntu 16.04

Rinzwind

sure but what is the shell used. bash zsh and ksh should understand {apps,conf,bin}
and expand it to 3 dirs. Other shells might take {apps,conf,bin}
literally

Shubham

But they are being expanded in this case also, its just that along with being expanded, they are being considered literally.

I tried one more thing, I ran docker run in my base image and started bash. I executed

mkdir -p /a/b/{c,d,e}

and it created only the expected directories, i.e., /a/b/c, /a/b/d, /a/b/e

Interestingly, I again ran the base image with `sh` command and ran the following:

mkdir -p /a/b/{c,d,e}

It took the argument literally and created one directory, i.e., /a/b/{c,d,e}

Rinzwind

3:37 PM

sh does not do expansion. That docker file probably executes the command twice. Once with bash/ksh/zsh and once with sh.

1 hour later…

Ubuntu Questions on U&L

5:02 PM

Q: CTRL, ALT & ALTGR dead on Fujitsu CELSIUS H770 with Linux Mint 19 Tara

My CTRL-L, CTRL-R, ALT, ALTGR & NumPad keys don't work anymore. The German layout keyboard was fully functional after installation, but the keys got lost after some reboots. I had problems with the touchpad, but that could be temporarily solved by applying sudo modprobe -r psmouse sudo modprobe ...

linux debian ubuntu linux-mint keyboard

4 hours later…

Ubuntu Questions on U&L

8:34 PM

Q: the command don't run in crontab

hi I have problem with runnig this command in crontab mysqldump --defaults-extra-file=/var/www/xxxx/backup/database/.sqlpwd dbName > /var/www/xxxx/backup/database/database-dump-"$(date '+%F').sql" I run it in console and its work prefectly but when I put it in /etc/crontab * * * * * root m...

ubuntu cron

2 hours later…

Ubuntu Questions on U&L

10:29 PM

-1

Q: Install Ubuntu as a second operating system

I am trying to install Ubuntu on my drive as a second operating system, so I setup my usb drive to be bootable so I can install linux. Now I got boot error message and I can not start windows or access bios, I tried functions keys but it keep restarting and go back to the same message. Tried tur...