‘m a new Unix system user. How do I use sudo command without a password on a Linux or Unix-like systems? [click to continue…] Sysadmin because even developers need heroes!!!
here are certain files in Ubuntu Linux (or Unix-like systems) that only root user access or edit. How can I edit and/or open files that requires admin (root) access on a Ubuntu Linux? [click to continue…]
‘m a new Ubuntu Linux user. In Linux, Apple OS X or Unix-like systems, how do I reissue or repeat a long command without retying it? [click to continue…]
have a Linux DD-WRT router DHCP server running on my network. How can I force my FreeBSD based dhcp client to get a new lease from this Linux based router? What is the command in FreeBSD equivalent to Windows’ “ipconfig /renew
” command? [click to continue…]
‘m using CentOS 7 server. I need to run a command when I logout using ssh or bash shell
. So in Linux and Unix-like systems, how can I run a command to execute when I log out my session? [click to continue…]
‘m a new Linux, OS X or Unix-like system users. I’m using bash shell. I made changes to my $HOME/.profile ($HOME/.bash_profile) file. How can I restart my session without doing logout and login again? [click to continue…]
‘m a new Linux / Unix system user. How can I set encrypted tunnel between my desktop/laptop computer and server in a remote data center to bypass the limits in a network? How do I create a reverse SSH tunnel on Unix-like systems? [click to continue…]
am a new Ubuntu Linux and bash shell user. I also know how to redirect output from display/screen to a file using the following syntax:
cmd > file
ls > file
However, some time errors are displayed on screen. How do I store and redirect output from the computer screen to a file on a Linux or Unix-like systems?
[click to continue…]
‘m a new Linux system user. I need to cleanup in a download directory i.e. delete all files from ~/Downloads/ folders except the following types:
*.iso – All iso images files.
*.zip – All zip files.
How do I delete all file except some in bash shell on a Linux, OS X or Unix-like systems?
[click to continue…]
am a new Linux user and student who used to write C or C++ programs on MS-Windows. Now, I am using Ubuntu Linux. How can I compile a C or C++ program on Linux operating systems using bash Terminal application? [click to continue…]