I tried to use update-alternatives to set Chromium as default web browser by the following command. Although I successfully added '/snap/bin/chromium' into --config, it didn't work.
levi#Lab-XPS:~$ sudo update-alternatives --install /usr/bin/x-www-browser x-www-browser /snap/bin/chromium 200
levi#Lab-XPS:~$ sudo update-alternatives --config x-www-browser
There are 2 choices for the alternative x-www-browser (providing /usr/bin/x-www-browser).
Selection Path Priority Status
------------------------------------------------------------
0 /snap/bin/chromium 200 auto mode
1 /snap/bin/chromium 200 manual mode
* 2 /usr/bin/firefox 40 manual mode
Press <enter> to keep the current choice[*], or type selection number: 0
update-alternatives: using /snap/bin/chromium to provide /usr/bin/x-www-browser (x-www-browser) in auto mode
levi#Lab-XPS:~$ x-www-browser google.com
error: unknown command "google.com", see 'snap help'
Then I found that /snap/bin/chromium is only a symbolic link to a LSB shared object:
levi#Lab-XPS:~$ file /snap/bin/chromium
/snap/bin/chromium: symbolic link to /usr/bin/snap
levi#Lab-XPS:~$ file /usr/bin/snap
/usr/bin/snap: ELF 64-bit LSB shared object, x86-64, version 1 (SYSV), dynamically linked, interpreter /lib64/ld-linux-x86-64.so.2, for GNU/Linux 3.2.0, BuildID[sha1]=ebc3e3ce9d2976e049f84e909f9822e878a39884, stripped
So, is there any solution to deal with the shared object and continue the setting? Or I have to give up using update-alternatives? Thanks.
You can create a wrapper script so that snap will detect that it is being run as chromium and launch the browser.
Create /opt/scripts/chromium.wrapper with contents:
#!/usr/bin/env sh
/snap/bin/chromium
Make the script executable.
sudo chmod +x /opt/scripts/chromium.wrapper
Install with update-alternatives
sudo update-alternatives --install /usr/bin/x-www-browser x-www-browser /opt/scripts/chromium.wrapper 200
Repeat for other snap-based applications.
Related
I need to run Google Chrome remotely on a virtual machine using SSH. I do not want xforwarding - I want to utilize the GPU available on the vm. When I try running google-chrome I get following error:
[19615:19615:0219/152933.751028:ERROR:browser_main_loop.cc(1512)] Unable to open X display.
I've tried to setting my DISPLAY env value to various values:
export DISPLAY=localhost:0.0
export DISPLAY=127.0.0.1:0.0
export DISPLAY=:0.0
I've also tried replacing 0.0 in abowe examples with different values.
I have ForwardX11 no in /etc/ssh/sshd_config
I tried setting up target like this:
systemctl isolate multi-user.target
When I try to run sudo lshw -C display i get folowing output:
*-display
description: VGA compatible controller
product: Hyper-V virtual VGA
vendor: Microsoft Corporation
physical id: 8
bus info: pci#0000:00:08.0
version: 00
width: 32 bits
clock: 33MHz
capabilities: vga_controller bus_master rom
configuration: driver=hyperv_fb latency=0
resources: irq:11 memory:f8000000-fbffffff
*-display UNCLAIMED
description: VGA compatible controller
product: GM204GL [Tesla M60]
vendor: NVIDIA Corporation
physical id: 1
version: a1
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress vga_controller bus_master cap_list
configuration: latency=0
resources: iomemory:f0-ef iomemory:f0-ef memory:41000000-41ffffff memory:fe0000000-fefffffff memory:ff0000000-ff1ffffff
I've tried to update my gpu drivers by:
wget https://www.nvidia.com/content/DriverDownload-March2009/confirmation.php?url=/tesla/375.66/nvidia-diag-driver-local-repo-rhel7-375.66-1.x86_64.rpm
yum -y install nvidia-diag-driver-local-repo-rhel7-375.66-1.x86_64.rpm
But after that I still see UNCLIMED next to my NVIDIA gpu.
Aby ideas?
You can try with Xvfb. it does not require additional hardware.
Install Xvfb if you didn't install it yet and do the following steps.
sudo apt-get install -y xvfb
Dependencies to make "headless" chrome/selenium work:
sudo apt-get -y install xorg xvfb gtk2-engines-pixbuf
sudo apt-get -y install dbus-x11 xfonts-base xfonts-100dpi xfonts-75dpi xfonts-cyrillic xfonts-scalable
Optional but nifty: For capturing screenshots of Xvfb display:
sudo apt-get -y install imagemagick x11-apps
Make sure that Xvfb starts every time the box/vm is booted:
Xvfb -ac :99 -screen 0 1280x1024x16 &
export DISPLAY=:99
Run Google Chrome
google-chrome
Okay guys. I found my problem after 2 hours of going crazy. My box was configured correctly. What you can NOT do, is ssh from one box, to another box, to this box and expect X11 forwarding to play nicely. Without tearing apart the entire network, I found that if I shelled over from the MAIN box to this box ( no double or triple ssh'ing) chrome comes right up as a regular user using CLI. So it was a matter of multiple shells from multiple boxes that made the display say it was set to NOTHING! Setting the display manually only complicates the problems. Once I shelled directly over to this box from the main outside box, my display was set to 10:0, which is first instance in my configuration. Don't make this mistake, you will waste valuable time.
FWIW, I ran into this when using SSH to log into a Selenium chrome node in a Docker compose stack. Chrome would launch if I invoked it as root with sudo -u seluser google-chrome, but not if I logged in as seluser. The trick turned out to be that root had DISPLAY set to :99:0, and seluser didn't have it set at all. If I set it explicitly (either from a seluser shell or from the docker compose exec command line) it worked.
$ docker-compose exec -u seluser \
selenium-chrome \ # or whatever your service is called
/bin/bash
seluser#c02cda62b751:/$ export DISPLAY=:99:0
seluser#c02cda62b751:/$ google-chrome http://app.test:3000/home
or
$ docker-compose exec -u seluser -e DISPLAY=:99:0 \
selenium-chrome \
google-chrome http://app.test:3000/home
That :99.0 is undocumented, though, so if this isn't working, you might try checking root's DISPLAY value with:
docker-compose exec -u root selenium-chrome bash -c 'echo "${DISPLAY}"'
I faced the same issue with WSL and Ubuntu. I have unininstalled/Reset the ubuntu. After that, I have executed the below command
wsl --set-default-version 2
then I installed again the Ubuntu, I didn't get --no-sandbox issue or any issue.
Hope this will use for someone.
I'm trying to get gnome-terminal to work in codelite under
setting > preferences > terminal
I tried
gnome-terminal -x '$(CMD)'
but it gives me the following error
Failed to execute child process "/bin/sh -f /usr/lib/codelite/codelite_exec ./program" (No such file or directory)
I'm running Linux Mint 18.
Solution is to run
sudo update-alternatives --config x-terminal-emulator
from a terminal and select
/usr/bin/gnome-terminal.wrapper
as default terminal.
CodeLite uses x-terminal-emulator. So as long as you define x-terminal-emulator to point to the correct terminal it will work.
See this post for more information
I just came across this problem after upgrading to CodeLite 10.0 from the CodeLite repository. The problem occurs because CodeLite is now installing things in different directories - namely codelite_xterm and codelite_exec, which are now installed to /usr/bin/.
For me, on Ubuntu 16.10, I found the easiest solution was to change Settings > Preferences > Terminal to:
/usr/bin/codelite_xterm '$(TITLE)' '$(CMD)'
You can then run:
sudo update-alternatives --config x-terminal-emulator
to select the terminal you wish to use (the default on Ubuntu 16.10 is gnome-terminal, so you won't have to run the last command if you're happy with gnome-terminal).
I have Arch Linux on /dev/sdb1 and NetBSD-7.0 on /dev/sdb2.
On Arch Linux when I run sudo grub-mkconfig -o /boot/grub/grub.cfg I get a message like Found unknown Linux distribution on /dev/sdb2 but when I reboot, there is no grub option for that unknown Linux distribution which I know it is NetBSD-7.0.
How can I add NetBSD-7.0 to my grub menu option when rebooting.
There is a similar post, currently looking into it.
UPDATE: I mounted NetBSD partition with sudo mount -t ufs -o ro,ufstype=ufs2 /dev/sdb2 /mnt/ (ufstype=44bsd did not work) and then ran grub-mkconfig -o /boot/grub/grub.cfg but yet the issue persists.
UPDATE: Rebooted and pressed c to get the grub command line. Following commands booted the NetBSD-7.0:
ls
Ran ls to see the correct name of disks and partitions, /dev/sdb2 on Linux was (hd0,gpt2) on Grub. Then ran the following:
insmod ufs2
set root=(hd0,gpt2)
knetbsd /netbsd
boot
And NetBSD-7.0 booted.
To add NetBSD option to Grub menu, modified file /etc/grub/40_custom on Arch Linux like below:
menuentry "NetBSD-7.0"{
insmod ufs2
set root=(hd0,gpt2)
knetbsd /netbsd
}
However, after modifying 40_custom like above, NetBSD option does not appear on Grub menu. I don't know why.
Unless you have a typo, it looks like the 40_custom file is in the wrong directory. it should be located at /etc/grub.d/40_custom, notice the .d.
If your /boot is located on a separate partition, make sure that it is mounted with mount /boot before generating the grub.cfg. Otherwise your new grub.cfg won't be used.
Check which partition grub is loading the configuration from by running echo ${prefix} within the grub command line. It's possible that grub is loading the configuration from a partition that you don't expect.
Verify that netbsd was added to the config with grep -i netbsd /boot/grub/grub.cfg before rebooting to avoid some frustration after generating grub.cfg
Most (all?) information online is outdated since ECW (Hexagon Geospatial/Intergraph) has recently released new versions with breaking changes (5.0, 5.1 and 5.2).
Most instructions result in errors like:
checking for libNCSEcw.so or libecwj2... configure: error: not found in /usr/local/lib or /usr/local/bin
This works for GDAL 1.11.2, but it should work back to 1.10.0.
Download the latest version of the ECW library from here (currently 5.5):
https://download.hexagongeospatial.com
Instructions for v5.2.1, but should be similar for the latest version:
$ unzip erdas-ecwjp2sdk-v5.2.1-linux.zip
$ chmod +x ERDAS_ECWJP2_SDK-5.2.1.bin
$ ./ERDAS_ECWJP2_SDK-5.2.1.bin
Choose Desktop Read-Only and accept the license. A directory named hexagon is extracted. Copy that to /usr/local.
$ sudo cp -r hexagon/ERDAS-ECW_JPEG_2000_SDK-5.2.1/Desktop_Read-Only /usr/local/hexagon
Link the .so library for the correct architecture:
$ sudo ln -s /usr/local/hexagon/lib/(x64|x86)/release/libNCSEcw.so /usr/local/lib/libNCSEcw.so
Then configure GDAL with this command:
$ ./configure --with-ecw=/usr/local/hexagon
Before I could see ECW support in gdalinfo --formats | grep -i ecw
I also had to run sudo ldconfig.
That was in Ubuntu 14.04 Linux.
I am trying to install Apache HTTP server locally in my box as a regular user (non-root).
I have downloaded Apache 2.4.1 version of Apache HTTP server [http://httpd.apache.org/download.cgi]. However when I am trying to build and install locally in my box I am getting below error:
httpd/httpd-2.4.1 1059> ./configure
checking for chosen layout... Apache
checking for working mkdir -p... yes
checking for grep that handles long lines and -e... /bin/grep
checking for egrep... /bin/grep -E
checking build system type... x86_64-unknown-linux-gnu
checking host system type... x86_64-unknown-linux-gnu
checking target system type... x86_64-unknown-linux-gnu
Configuring Apache Portable Runtime library ...
checking for APR... no
configure: error: APR not found. Please read the documentation.
I am not sure what dependency it is looking for - I mean the download package does not contains it? What I need to do to build / deploy Apache HTTP server?
When it tells you Please read documentation it means that you should go read Apache documentation ( http://httpd.apache.org/docs/2.4/install.html ) which tells you to
download the latest versions of both APR and APR-Util from Apache APR,
unpack them into ./srclib/apr and ./srclib/apr-util (be sure the
domain names do not have version numbers; for example, the APR
distribution must be under ./srclib/apr/)
then do
./configure --with-included-apr
For Ubuntu 11.10 this option seems to be working well:
# APR
wget http://mirrors.axint.net/apache//apr/apr-1.4.6.tar.gz
tar -xvzf apr-1.4.6.tar.gz
cd apr-1.4.6/
./configure
make
make install
cd ..
# APR Utils
wget http://mirrors.axint.net/apache//apr/apr-util-1.4.1.tar.gz
tar -xvzf apr-util-1.4.1.tar.gz
cd apr-util-1.4.1
./configure --with-apr=/usr/local/apr
make
make install
cd ..
# Apache
wget http://apache.petsads.us//httpd/httpd-2.4.1.tar.gz
tar -xvzf httpd-2.4.1.tar.gz
cd httpd-2.4.1
./configure --enable-file-cache --enable-cache --enable-disk-cache --enable-mem-cache --enable-deflate --enable-expires --enable-headers --enable-usertrack --enable-ssl --enable-cgi --enable-vhost-alias --enable-rewrite --enable-so --with-apr=/usr/local/apr/
make
make install
cd ..
You can find more about it below
Source: VaporCreations.com
If you have Debian/Ubuntu you can just:
apt-get install libapr1-dev libaprutil1-dev
Then ./configure
Done
Here are the steps of how I installed apache-httpd on a non-root users:
Download and extract apache-httpd-2.4.2 (but before ./configuring,
making and installing it, follow the steps below:)
Download and extract APR & APR-UTIL into "./srclib/apr" &
"./srclib/apr-util" folders. This requires ./configure
--with-apr=./apache/httpd-2.4.2/srclib/apr (and) --with-included-apr (options).
Download, extract, ./configure (with) --prefix=localURL, make and
make install PCRE into "./pcre" folder. This requires ./configure
--with-pcre=/home/username/apache/pcre (option).
Configure apache-httpd by entring following command (I like to
enable certain options as written in the command below):
./configure --enable-file-cache --enable-cache --enable-disk-cache
--enable-mem-cache --enable-deflate --enable-expires --enable-headers --enable-usertrack --enable-cgi --enable-vhost-alias --enable-rewrite --enable-so --with-apr=/home/username/apache/httpd-2.4.2/srclib/apr --prefix=/home/username/apache/httpd-2.4.2/ --with-included-apr --with-pcre=/home/username/apache/pcre
Note: When configuring apache-httpd, use option "--enable-ssl" ONLY if OpenSSL is installed otherwise DON'T enable it.
Now on the command-line, enter 'make' and 'make install' command.
Open and configure the 'httpd.conf' file e.g.:
"vi /home/eddie_kumar/apache/httpd-2.4.2/conf/httpd.conf"
IMPORTANT: don't forget to change the default port from 80 to something else e.g. 8080, this is especially important for non-root
user. (How to? open httpd.conf -> search "Listen 80" -> change it
to "Listen 8080".
And that's it, now open your browser enter "localhost:8080", it should display "It works!".
If you are using fedora, you can use yum to install APR, APR-Util and PCRE. You'll also need to download apr-devel, apr-util-devel and pcre-devel.
That being said, you can just run the following command on your terminal and no more "configure: error: APR not found.. ..APR-Util and PCRE" errors.
yum -y install arp apr-devel apr-util apr-util-devel pcre pcre-devel
I'm using fedora 17 and planning on using a shell script to setup apache 2.4.3. So yum works pretty slick instead of manually downloading apr, apr-util, and pcre.
1, You need APR (apache portable runtime), which is core component of apache web server
2, If you wnat to do make install, you may need root account
3, Even if not, apache can not start to listen on unprivileged port (lower then 1024) without root account
4, gain root or ask someone with root to install apache from official repo(I don;t know which distro you run) like using yum, apt-get, etc...
Apr or pcre related errors require the source to be downloaded and Apache HTTPD "configure" process needs to be made aware of these source locations on your file system. For instance: if you downloaded the source for APR at ./srclib (relative to apache httpd) then you would use
--with-included-apr
as the configure option.
On the other hand if you want to not build but install APR / APR-UTIL, then you need the following on CentOS / RedHat:
yum install apr-util-devel apr-devel
However it might so happen that the APR version provided by yum does not match what is expected by this version of Apache httpd. In that case you could download APR and APR-UTIL and use the --with-included-apr option.
You could also build PCRE utilizing the same "configure, make, make install" process and then continue where you left off building Apache httpd.
Or you could install pcre:
yum install pcre-devel
If while building PCRE: you see "compile: unrecognized option" then perhaps you would need other dependencies as well: Please see the details at:
http://khanna111.com/wordPressBlog/2012/09/11/94087-2/
It also covers "mod_deflate" and "zlib" as well.
Basic steps
tar -xvf httpd-2.4.1-customized.tar -C ../
#Balancer folder will be created
tar -xvzf openssl-1.0.1.tar.gz -C /balancer/
cd ->/balancer/openssl-1.0.1
./config --prefix=/usr/local/ssl/ shared zlib-dynamic enable-camellia
make depend
make
make install
tar -xvzf pcre-8.30.tar.gz -C ../balancer/
/balancer/pcre-8.30
./configure --prefix=/usr/local/pcre/
make
make install
remove pcre and openssl
Installing and compiling the Apache server on Ubuntu machine
step 1:Install the Java JDK
sudo apt install openjdk-11-jdk
sudo gedit /etc/environment
JAVA_HOME="/usr/lib/jvm/openjdk-11"
source /etc/environment
echo $JAVA_HOME
verify the java version
javac --version
**** install Other required packages:**
sudo apt-get install apache2-dev -y
sudo apt-get install libpcre3 libpcre3-dev
Step 2 :To Install Apache HTTP Server
#1 For ubuntu ,install development tools including the C compiler:
sudo apt-get install build-essential checkinstall
#2 Download and Extract the required files
assuming that all the files have been downloaded into the ~/Downloads directory
Download the Apache HTTP Server httpd-2.4.41.tar.gz from Apache download page (https://httpd.apache.org/download.cgi)
and following required libraries for compiling the apache HTTP server:
apr-1.7.0.tar.gz(http://apr.apache.org/download.cgi)
apr-util-1.6.1.tar.gz(http://apr.apache.org/download.cgi)
pcre2-10.34.tar.gz (ftp://ftp.pcre.org/pub/pcre/) http://pcre.org/
****Read Requirements Section(http://httpd.apache.org/docs/2.4/install.html)***
#3 Extract the tar files
tar -xvf httpd-2.4.41.tar.gz
tar -xvf apr-1.7.0.tar.gz
tar -xvf apr-util-1.6.1.tar.gz
tar -xvf pcre2-10.34.tar.gz
after extraction you should see following list of directories in ~/Downloads
httpd-2.4.41
apr-1.7.0
apr-util-1.6.1
pcre2-10.34
#4 Create a directory for the apache HTTP Server
*make sure to give all rights to this directory so that while compiling files can be read/written
sudo mkdir /home{your username here}/apache
To give all permissions to a apache directory :
sudo chmod -R 777 /home{your username here}/apache
#5 copy the arp and arp-util directory into the ~/Downloads/httpd-2.4.41/srclib/
cd ~/Downloads
mv apr-util-1.6.1 ~/Downloads/httpd-2.4.41/srclib/apr-util
mv apr-1.7.0 ~/Downloads/httpd-2.4.41/srclib/apr
#6 Configure the sources for compilation.
The --prefix option can be used to install the Web server in a location where you can write files.
cd ~/Downloads/httpd-2.4.41/
./configure --prefix=/home/{username here}/apache --with-pcre=~/Downloads/pcre2-10.34
NOTE:
If you have some problems while running above command,you can also try
insallting pcre in /usr/local/pcre, using
./configure --prefix=/usr/local/pcre
make
sudo make install
commands and then by running folllowing commands:
cd ~/Downloads/httpd-2.4.41/
./configure --prefix=/home/{username here}/apache --with-pcre=/usr/local/pcre
make
sudo make install
If you still face some problems ,make sure that ~/apache and its nested directory have read/write permissions. if not run **sudo chmod -R 777 /home{your username here}/apache** command again.
#7 Compile Apache HTTP Server.
cd ~/Downloads/httpd-2.2.25
sudo make
#8 Install Apache HTTP Server.
cd ~/Downloads/httpd-2.2.25
sudo make install
Optional
#9 To Prepare Your Hosts File
sudo gedit /etc/hosts
27.0.0.1 localhost www.example.com
sudo gedit /home/{your username here}/apache/conf/httpd.conf
and copy:
Listen 8000
ServerName www.example.com:8000
#10 Test the installation to ensure Apache HTTP Server is working.
/home/{your username here}//apache/bin/apachectl -k start