Tomáš Pospíšek
  • Member for 4 years, 2 months
  • Last seen more than a month ago
Cron not working, although the command works
6 votes

Are you sure cron is not working? If you add a line like */1 * * * * touch /tmp/foobar123 to your crontab, then does the file appear in /tmp? If that file won't appear after a minute or so, then ...

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Unable to install anything on Ubuntu server 16.04.3 (openssh for example)
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6 votes

You need to tell apt where to look for updates (on the net). That means you need to add sources to your /etc/apt/sources.list. You can have that file generated by this site here, f.ex.; https://...

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Unable to unmount partition from live USB
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3 votes

/dev/sda1 is apparently your swap partition. A swap partition doesn't get "mounted" so, as unmount is correctly telling you above: "/dev/sda1: not mounted". Maybe you want to issue a mount on the ...

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How do you know the manpages name for a given package?
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2 votes

If the manpage is contained in the package, then you should be able to see it when you list the contents of the package: $ dpkg -L python3-requests | grep /usr/share/man What you're possibly looking ...

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How can I check RAM of my laptop?
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2 votes

On the command line you can use: free to check your (free/available) RAM. Also do: man free

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Fingerprint Reader Power Consumption
1 votes

strangely enough this seems to have fixed it for me: echo on > /sys/bus/usb/devices/1-1.2/power/control replace above with the correct USB device ID as necessary. You should be able to find the ...

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Upgraded the VMWare and now I can not run a guess machine
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1 votes

The OP was able to work around the problem via sudo mokutil --disable-validation

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Copying files from my /home in a rescue boot shell on VirtualBox
1 votes

When you get to the prompt do: cd /home ls what do you see? Also: lsblk and fdisk -l This should give you similar listings of available block devices and their partitions. Does any of those ...

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Chinese characters don't display in Firefox 57.0
1 votes

It could be, that some fonts to which firefox or respectively the font renderer is mapping to do not contain the required glyphs for the chinese characters. Thus maybe you could try to change the font ...

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How to change hardware for my Ubuntu server 16.04
1 votes

If you don't want to use a tool like clonezilla, then what you can do is: take a live or rescue disk or USB stick boot from that partition the disk of your new computer (maybe take a hint from the ...

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Connect to postfix from two different servers with two different user/pass combinations
0 votes

On smtp.domainthree.com: you set up authenticated SMTP sessions for posfix you add (with adduser) two users you set their passwords (with passwd) On each of your VPS servers: you configure ...

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Only auto-shutown if PC is not working/training AI
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0 votes

You can write a cron job that checks whether there's a process of yours running (pgrep -u $YOUR_LOGIN_HERE) every five minutes and then calls suspend or such. You'll need to log out though for this ...

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/usr/bin/ld: warning: libinference_engine.so, needed by /opt/intel/computer_vision_sdk_2018.2.319/opencv/lib/libopencv_dnn.so.3.4.2, not found
0 votes

Please start your application like this: LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/opt/intel/computer_vision_sdk_2018.2.319/deployment_tools/inference_engine/lib/ubuntu_16.04/intel64 your_application_here

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Setup multiple domains on one sever
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0 votes

When the system is telling you that it didn't find something: env: apache2ctl: No such file or directory then you can use this web page to search for it: https://packages.ubuntu.com/search?searchon=...

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Wifi works from one boot drive, but disappeared from the other
0 votes

Might be that USB on your system is flaky. F.ex. the controller not running cleanly. The wiring not being clean any more. One of the connectors having a loose or cold contact. I had a similar ...

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Xubuntu 16.04 installer hangs at "Configuring system locales..." on VirtualBox
0 votes

You should be able to find out what's going on by pressing CTRL-ALT-F1 inside the VM. That should bring you into a console. Try out ALT-F(any of the function keys) inside the console. There should be ...

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16.04 GUI crashes with mouse use
0 votes

If you want to go on fixing the problem without a GUI, but only on the command line, then you can press CTRL-ALT-F1, which will bring you to a text-only console. There you can log in and you should be ...

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Upgrading network-manager crashes sudo
0 votes

In that case (unless you want to remove NetworkManager and replace it by something else) you'll need to fix NetworkManager. For one thing, you could have a look at journalctl -xe does it show you ...

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Memory full, mostly taken by "shared", GUI unresponsive
0 votes

You need to find out what fills your computer's memory. The first thing that comes to my mind is the browser. Modern browsers use insane amounts of memory. You can find out what uses what amount of ...

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How to get my wirleless adapter to work with Ubuntu 17.04
0 votes

How are you going about installing packages? With apt-get? This here: The exact error I am getting for install for example. E: Package git has no installation candidate. looks like you need to ...

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sharing swap partition on network
0 votes

No you can not share a swap partition (or a swap file) between different active hosts. Linux' paging is not programmed in a way that expects that the swap partition is accessed concurrently from ...

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Does deleting desktop environment(Unity) also remove core application such as file manager and other tools like calenders e.t.c?
0 votes

I can tell you how you find out by using apt-get/apt/aptitude. If you use one of these tools to remove Unity, then the tool will tell you which applications depend on Unity when removing it and (in ...

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Installing over a messed up update
0 votes

You should be able to install Ubuntu on the disk partition just like you did install it on the USB stick. Depending on whether you want or do not want to keep your data on the disk partition you ...

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