opareting system - Read For Learn

Python subprocess.Popen “OSError: [Errno 12] Cannot allocate memory”

As a general rule (i.e. in vanilla kernels), fork/clone failures with ENOMEM occur specifically because of either an honest to God out-of-memory condition (dup_mm, dup_task_struct, alloc_pid, mpol_dup, mm_init etc. croak), or because security_vm_enough_memory_mm failed you while enforcing the overcommit policy. Start by checking the vmsize of the process that failed to fork, at the time of the fork attempt, and then compare to the amount of free memory (physical and swap) as it … Read more

WSL – GEDIT Unable to init server: Could not connect: Connection refused

You need an X server to run graphical applications like gedit. I use VcXsrv or Xming on my Windows desktops, both are very small and easy to install, but there exist other servers like Cygwin/X. Short instructions for VcXsrv/Xming: download and install the Windows package start XLaunch or Xming export the DISPLAY variable in your WSL terminal and start geditexport DISPLAY=0:0 … Read more

Command Prompt “Net View System Error 6118”

6118 means The list of servers for this workgroup is not currently available, mostly it is due to the firewall protection blocks the SMB. You can check as following steps first check each pc is in the same workgroup. disable the firewall and virus protect in each PC. Ping PC2 from PC1 to ensure the … Read more

How to run a makefile in Windows?

If you have Visual Studio, run the Visual Studio Command prompt from the Start menu, change to the directory containing Makefile.win and type this: You can also use the normal command prompt and run vsvars32.bat (c:\Program Files (x86)\Microsoft Visual Studio 9.0\Common7\Tools for VS2008). This will set up the environment to run nmake and find the compiler tools.

X11 forwarding request failed on channel 0

Adding the -v option to ssh when trying to log in will give a lot of debug information which might give a clue to exactly what the problem is, like for instance which in my case installing xauth on the server fixed the issue.

tar removing leading ‘/’ from member names

The “good” version is also displaying the same message you’ve just missed it. If you don’t like the behaviour, search for “leading”, in manual. First hit:

Wix Toolset RegistrySearch is not saving a registry key

If you want to persist property values from user choices it may be easier to just let WiX do it with the “remember property” pattern. It’s not clear how you are saving these values and retrieving them, because there is no indication if you are saving them in 32-bit or 64-bit location, or if you … Read more

Pseudo-terminal will not be allocated because stdin is not a terminal

Try ssh -t -t(or ssh -tt for short) to force pseudo-tty allocation even if stdin isn’t a terminal. See also: Terminating SSH session executed by bash script From ssh manpage:

Need a good hex editor for Linux

Bless is a high quality, full featured hex editor. It is written in mono/Gtk# and its primary platform is GNU/Linux. However it should be able to run without problems on every platform that mono and Gtk# run. Bless currently provides the following features: Efficient editing of large data files and block devices. Multilevel undo – redo … Read more

Docker can’t connect to docker daemon

After I update my Docker version to 0.8.0, I get an error message while entering sudo docker version: And I’ve followed the instructions and entered command sudo docker -d, and I got this: How do I solve the problem?

+ More