How to read an IP address backwards?
If we have this string (IP address): 192.168.1.1
Unix & Linux
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 ssh to remote server using a private key?
I have two servers. Both servers are in CentOS 5.6. I want to SSH from Server 1 to Server 2 using a private key I have (OpenSSH SSH-2 Private Key).
Process with weird random name consuming significant network and CPU resources. Is someone hacking me?
In a VM on a cloud provider, I’m seeing a process with weird random name. It consumes significant network and CPU resources.
Understanding Unix file name encoding
I have a hard time understanding how the file name encoding works. On unix.SE
I find contradicting explanations.
Hard link permissions behavior different between CentOS 6 and CentOS 7
I’m getting a permissions error in CentOS 7 when I try to create a hard link. With the same permissions set in CentOS 6 I do not get the error. The issue centers on group permissions. I’m not sure which OS version is right and which is wrong.
yum installs kernel-devel different from my kernel version
I am attempting to install the VMWare player in Fedora 19. I am running into the problem that multiple users have had where VMware player cannot find the kernel headers. I have installed the kernel-headers and kernel-devel packages through yum and the file that appears in /usr/src/kernels is:
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