Why does /etc/resolv.conf point at 127.0.0.53?
I tried to check what my DNS resolver is and I noticed this:
linux
Systemd timeout because it doesn’t detect daemon forking
I’m currently developping a systemd daemon. The problem I’m facing is that the daemon is killed 1m30s after beeing launched because the forking is not detected.
Command line to return to the GUI after Ctrl-Alt-F1?
I’m unable to return to the GUI with Ctrl-Alt-F7 (or any of the 12 function keys). I have some unsaved work and I don’t want to lose them. Are there any other key combinations that will allow me to switch back?
How to clean up unnecessary files
Please suggest me any particular unnecessary file that I can clean to back everything to normal condition(temporarily). (i.e. any log or archieve or anything ). My var/log has only 40MB and Home directory has 3GB of space(so I believe that’s not a problem). Other than that what I can clean up to make space.
How to display open file descriptors but not using lsof command
Hi I have read Here that lsof is not an accurate way of getting the number of File Descriptors that are currently open. He recommended to use this command instead
What does a dot after the file permission bits mean?
I performed an ls -la on directory on my CentOS 6.4 server here and the permissions for a given file came out as:
Does Linux perform “opportunistic swapping”, or is it a myth?
Suppose a program asks for some memory, but there is not enough free memory left. There are several different ways Linux could respond. One response is to select some other used memory, which has not been accessed recently, and move this inactive memory to swap.
recovering deleted file held open by apache?
Suppose an apache log file gets deleted but it’s held open by apache; then this is what I am doing:
Configure SELinux to allow daemons to use files in non-default locations
I have a daemon (apache/samba/vsftpd/…) running on SELinux enabled system and I need to allow it to use files in a non-default location. The standard file permissions are configured to allow access.
How do I jump to the next or previous word with CTRL + arrow keys in a console?
In terminal emulation applications, pressing CTRL + Left / Right arrows jumps from one word to the previous or next one. Is it possible to have the same functionality in a Linux console, whether it is in text or in framebuffer modes?