Failed to start mongod.service: Unit mongod.service not found
Most probably unit mongodb.service is masked. Use following command to unmask it. sudo systemctl unmask mongod and re-run sudo service mongod start
ubuntu
using pip3: module “importlib._bootstrap” has no attribute “SourceFileLoader”
Faced the same problem. I think this is because python3.6 and pip3 were installed from different sources. I suggest using python’s inbuilt facility to install pip i.e This should install pip3 and pip3.x where x in python3.x. Same works for python2 also.
After installing with pip, “jupyter: command not found”
you did not log out and log in ? It should be on your path to execute. If not, pip installed executables in .local, so in a terminal: should start notebook
Ubuntu: OpenJDK 8 – Unable to locate package
UPDATE: installation without root privileges below I advise you to not install packages manually on ubuntu system if there is already a (semi-official) repository able to solve your problem. Further, use Oracle JDK for development, just to avoid (very sporadic) compatibility issues (i’ve tried many years ago, it’s surely better now). Add the webupd8 repo to your … Read more
How to restart remote MySQL server running on Ubuntu linux?
SSH into the machine. Using the proper credentials and ip address, ssh [email protected]. This should provide you with shell access to the Ubuntu server. Restart the mySQL service. sudo service mysql restart should do the job. If your mySQL service is named something else like mysqld you may have to change the command accordingly or try this: sudo /etc/init.d/mysql restart
localhost/phpinfo.php
I had a similar problem but the reason was because I had just restored my files into www from a Windows NTFS backup drive. Naturally, with NTFS we don’t have the same permissions of Ubuntu or any other Linux system. Looking at the folders using nautilus showed incorrect owners and permissions. How I fixed it… … Read more
“sed” command in bash
sed is the Stream EDitor. It can do a whole pile of really cool things, but the most common is text replacement. The s,%,$,g part of the command line is the sed command to execute. The s stands for substitute, the , characters are delimiters (other characters can be used; /, : and @ are popular). The % is the pattern to match (here a literal percent sign) and the $ is the second pattern … Read more
How to install “make” in ubuntu?
I have no idea what linux distribution “ubuntu centOS” is. Ubuntu and CentOS are two different distributions. To answer the question in the header: To install make in ubuntu you have to install build-essentials
“E: Unable to locate package python-pip” on Ubuntu 18.04 [duplicate]
Try following command sequence on Ubuntu terminal:
How to solve “Kernel panic – not syncing – Attempted to kill init” — without erasing any user data
I was trying to update libc in our Ubuntu server but it failed and now when I reboot the server I get a error message: Kernel panic – not syncing – Attempted to kill init! and it just hangs. What is the solution to this problem? The server is used by 10 people so I … Read more