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localhost's questions

Martin Hope
localhost
Asked: 2024-11-06 20:48:18 +0800 CST
  • 6

I'm on Ubuntu 20.04 and trying to run a command as root, but without using sudo and instead using the sticky bit.

I've read this answer but can't seem to get it to work.

I've created a script called whoami_root to show the user that it is running as.

Output of cat whoami_root:

#!/bin/bash
whoami

I have run sudo chown root whoami_root and sudo chmod u+s whoami_root

Output of ll whoami_root:

-rwsr-xr-x 1 root root 20 Nov  6 23:33 whoami_root

Output of ./whoami_root

myuser

Why does it seem to ignore the suid bit and run as myuser instead of root?

permissions
Martin Hope
localhost
Asked: 2022-07-04 00:55:05 +0800 CST
  • 0

I'm running Ubuntu 18.04.6 LTS.

When I run:

sudo apt update
sudo apt install curl

I get:

Reading package lists... Done
Building dependency tree
Reading state information... Done
The following packages were automatically installed and are no longer required:
  kodi-inputstream-adaptive kodi-inputstream-rtmp kodi-peripheral-joystick libappindicator1 libavdevice-ffmpeg56 libavfilter-ffmpeg5 libavresample-ffmpeg2 libcdio-cdda1 libcdio-paranoia1 libcdio13 libcec4 libcrossguid1 libdbusmenu-gtk4
  libfdk-aac0 libfstrcmp0 libindicator7 liblircclient0 libluajit-5.1-2 libluajit-5.1-common libmicrohttpd10 libnfs8 libopencv-core2.4v5 libopencv-imgproc2.4v5 libp8-platform2 libshairplay0 libtbb2 libtinyxml2.6.2v5 libva-drm1
  libva-x11-1 python-bluez python-cryptodome python-simplejson
Use 'sudo apt autoremove' to remove them.
The following additional packages will be installed:
  libafflib0v5 libcurl4 libxmlrpc-core-c3 rtorrent
The following packages will be REMOVED:
  kodi kodi-x11 libcurl3 obs-studio
The following NEW packages will be installed:
  curl libcurl4
The following packages will be upgraded:
  libafflib0v5 libxmlrpc-core-c3 rtorrent
3 to upgrade, 2 to newly install, 4 to remove and 19 not to upgrade.
Need to get 1,170 kB of archives.
After this operation, 96.3 MB disk space will be freed.

I don't understand why it wants to remove kodi and install rtorrent.

How can I install curl without changing anything else about my current system? I don't care what version of curl I end up with, but don't want kodi changed.

edit: the output of apt-cache policy libcurl3 libcurl4 is:

libcurl3:
  Installed: 7.58.0-2ubuntu2
  Candidate: 7.58.0-2ubuntu2
  Version table:
 *** 7.58.0-2ubuntu2 500
        500 http://au.archive.ubuntu.com/ubuntu bionic/universe amd64 Packages
        100 /var/lib/dpkg/status
libcurl4:
  Installed: (none)
  Candidate: 7.58.0-2ubuntu3.19
  Version table:
     7.58.0-2ubuntu3.19 500
        500 http://au.archive.ubuntu.com/ubuntu bionic-updates/main amd64 Packages
        500 http://security.ubuntu.com/ubuntu bionic-security/main amd64 Packages
     7.58.0-2ubuntu3 500
        500 http://au.archive.ubuntu.com/ubuntu bionic/main amd64 Packages

Edit2: the output of apt-cache policy kodi:

kodi:
  Installed: 2:18.4+git20190831.2224-final-0xenial
  Candidate: 2:18.4+git20190831.2224-final-0xenial
  Version table:
 *** 2:18.4+git20190831.2224-final-0xenial 100
        100 /var/lib/dpkg/status
     2:17.6+dfsg1-1ubuntu1 500
        500 http://au.archive.ubuntu.com/ubuntu bionic/universe amd64 Packages
apt
Martin Hope
localhost
Asked: 2016-11-03 20:17:21 +0800 CST
  • 2

I want to backup my boot drive to an image on a remote samba fileserver.

I am planning to set up a minimal ubuntu install on a usb flashdrive which would just take an image of the usual boot drive, then reboot back into the usual OS.

I would like to be able to leave the bootable usb plugged into the machine all the time as the machine is physically a bit difficult to get to.

Basically I want to be connected to the usual OS, and be able to issue a command which would shut down, then boot off the usb, which would image the drive onto the server, then reboot.

Is there a way to do this? Does anyone have any ideas how I can achieve this?

I want to make it as easy as possible to script backups of the boot drive without having to physically reinsert the usb drive every time.

Thanks!

boot
Martin Hope
localhost
Asked: 2014-01-13 03:37:17 +0800 CST
  • 2

I use ConnectBot sometimes to connect to my ubuntu machine, and that works fine, however it just comes up with a standard shell, not my byobu screens that I get when I connect to it using another machine running ssh, such as my windows machine running PuTTy.

Is there any way that I can see my byobu screens from ConnectBot?

ssh