Linux
Linux
Linux
Linux CLI view octal file permissions
Your regular ls -l output on a Linux machine will show a bunch of information including the file permissions displayed as following: -rwxr-xr-x. 1 root root 4096 Jun 11 10:44 example.txt r = readable (=4); w = […]
Linux
VIM text editor color syntax highlighting
Did you know that you can easily turn on color syntax highlighting and switch to another color schemes in the vim text editor? Start Vim and press [esc] followed by the commands: :syntax on and […]
Linux
Create bootable Linux Debian USB drive in Apple OS X
Creating a bootable Linux Debian USB stick from Apple OS X is fairly easy 🙂 Download the latest stable Linux Debian ISO from cdimage.debian.org; Insert your USB drive; Start the Terminal app; enter sudo diskutil […]
Linux
Restrict shell user to run only limited set of commands
Issue Need to restrict the normal users to run only limited set of commands assigned to him/her and all other commands for which normal user have permission to execute by-default, shall not be executed. E.g: […]
Firewalls
Failed to send 300 byte long packet over fallback interface
While reviewing the SysLog messages on my Linux Debian (v8 Jessie) server I noticed that the following error is flooding my logs: dhclient.c:2243: Failed to send 300 byte long packet over fallback interface. send_packet: Operation […]
