this must be the place
To install a local deb file and its dependencies use apt, not dpkg:
sudo apt install ./foo-1.2.3.deb
You’ll automatically get all of the dependencies installed with the package. (dpkg doesn’t understand dependencies or repos, apt does.)
The leading ./, or a full or relative path to the deb file, is required. The path is what tells apt that it’s a local file. You have to include the path to the deb file or this will not work.
Hope you find this useful.
Since virsh domifaddr doesn’t work to get the IP addresses of VMs on a bridged network, I wrote a get-vm-ip script (which you can download from Github) which uses this to get the IP of a running VM:
HOSTNAME=[your vm name]
MAC=$(virsh domiflist $HOSTNAME | awk '{ print $5 }' | tail -2 | head -1)
arp -a | grep $MAC | awk '{ print $2 }' | sed 's/[()]//g'The virsh command gets the MAC address, the last line finds the IP address using arp.
Hope you find this useful.
My Ubuntu 18.04 box has Thunderbird installed as the default mail client. I was a Thunderbird user for years, but I currently spend most of my time using GMail, and when I click on a email mailto: link on a web page Ubuntu will load Thunderbird.
The documented fix is to go to Settings > Details > Default Applications and pick a different mail client. However, I don’t want a mail client at all, I want mail links to go to my default browser (Firefox, on this machine), load GMail, and open a to email “to” the name in the link.
The documented fix for that issue is to install the gnome-gmail package, but I don’t always use Gnome, so I installed Desktop Webmail instead.
If you want to try it, these are the steps:
desktop-webmail packageThe next time you click a mailto: link Desktop Webmail will ask you what web mail service you want to use. Desktop Webmail currently supports Gmail, Hotmail, Yahoo and Zoho. Select Gmail and it’ll pop up a new email message using GMail, set the “to” address to the mailto: link, using your preferred browser.
Hope you found this useful.
I just upgraded from Ubuntu 17.04 to 17.10 and one of the first things I noticed was all of the disk volumes that are mounted under my home directory appeared on my desktop. In Ubuntu 17.10, all volumes that are mounted under /home or /media appear on your desktop, and none of the switches in the Settings tool will make them go away.
The names of the folders aren’t even useful. They’re names like 10GB Volume and 20GB Volume. If you have two volumes the same size they’ll both have the same useless name. No hint of where the volume is mounted appears.
I have files, documents, databases, and email going back 20 years, much of it archival data that I want to be able to search but which never gets updated, so I keep these archive directories on separate read-only logical volumes. If my home directory’s file system gets corrupted beyond repair, the archives will still be intact. Since the volumes are read-only a misbehaving program or command-line oops won’t destroy the data.
But I don’t want to see them all over my desktop.
Tweak tool to the rescue! Install the tool and run it:
sudo apt install gnome-tweak-tool gnome-tweak-tool
Then:
Desktop > Mounted Volumes > Off
No more volume icons on the desktop!
gnome-tweak-tool has other useful settings that are absent from the Settings tool, such as giving you the ability to move the window buttons to the upper left side of your windows.
Want to make the icons on your desktop smaller? Open up the File Manager, browse to Desktop, and select the icon size you want by moving the slider bar. The size of the icons on your Desktop and the size in the File Manager’s Desktop folder both use the same setting.
Hope you find this useful.
Google “How do I mount an ISO image in Linux” and most of the links still say to use “-t iso9660”. For example:
mount -t iso9660 -o loop,ro diskimage.iso /mnt/iso
That worked fine 10 years ago, but these days not all ISOs use ISO9660 file systems. Many use the UDF (Universal Disk Format) file system, and if you specify ISO9660 when mounting a UDF ISO file, subtle problems can occur. For instance, file names that contain upper case letters on a UDF file system will appear in lower case when that ISO is mounted using ISO9660.
On any modern Linux distro mount is smart enough to figure out what type of file system to use when mounting an ISO file, so it’s perfectly fine to let mount infer the type, e.g.:
mount -o loop,ro diskimage.iso /mnt/iso
Here’s an example of what happens when you try to mount a type UDF ISO as type ISO9660. Note that the case of the file names changes to all lower case when mounting as iso9660, which in this case causes subtle errors to occur within the software.
[~]$ blkid /srv/isos/specsfs/SPECsfs2014-1.0.iso /srv/isos/specsfs/SPECsfs2014-1.0.iso: UUID="2014-10-22-15-52-41-00" LABEL="SPEC_SFS2014" TYPE="udf" [~]$ mount -t iso9660 -o loop,ro /srv/isos/specsfs/SPECsfs2014-1.0.iso /mnt/iso [~]$ cd /mnt/iso [/mnt/iso]$ ls benchmarks.xml netmist_modify redistributable_sources binaries netmist_modify.c sfs2014result.css copyright.txt netmist_monitor sfs_ext_mon docs netmist_monitor.c sfsmanager import.c netmist_pro.in sfs_rc license.txt netmist_proj spec_license.txt makefile netmist.sln specreport map_share_script notice submission_template.xml mempool.c pdsm token_config_file mix_table.c pdsmlib.c win32lib netmist.c rcschangelog.txt workload.c netmist.h readme.txt [/mnt/iso]$ cd [~]$ umount /mnt/iso [~]$ mount -o loop,ro /srv/isos/specsfs/SPECsfs2014-1.0.iso /mnt/iso [~]$ cd /mnt/iso [/mnt/iso]$ ls benchmarks.xml netmist_modify redistributable_sources binaries netmist_modify.c sfs2014result.css copyright.txt netmist_monitor sfs_ext_mon docs netmist_monitor.c SfsManager import.c netmist_pro.in sfs_rc license.txt netmist_proj SPEC_LICENSE.txt makefile netmist.sln SpecReport Map_share_script NOTICE submission_template.xml mempool.c pdsm token_config_file mix_table.c pdsmlib.c win32lib netmist.c rcschangelog.txt workload.c netmist.h README.txt