sudo – nixCraft

How to append text to a file when using sudo command on Linux or Unix

May 30, 2017May 30, 2017in BASH Shell, Linux, UNIX last updated May 30, 2017

I am trying to add entry to /etc/hosts file using ‘sudo echo '192.168.1.254 router' >> /etc/hosts‘ but getting an error that read as, -bash: /etc/hosts: Permission denied. How do I insert or append text to a file when running sudo command on Linux or Unix-like system?

Google Chrome: Clear or flush the DNS cache

May 28, 2017May 28, 2017in Linux, Mac OS X, UNIX, Windows last updated May 28, 2017

I think Google has its own dns caching system. I am getting the same old dns entry in my Google Chrome browser on both Linux and Apple OS X. How do I flush or clear the DNS cache in Google Chrome browser without compete shutting down?

How to run multiple commands in sudo under Linux or Unix

May 2, 2017in BASH Shell, CentOS, Debian / Ubuntu, FreeBSD, Linux, Suse, Ubuntu Linux, UNIX last updated May 2, 2017

I am a new Linux user. How do I run two commands from a bash shell? I need to run apt-get update and apt-get -y upgrade without typing sudo command two times from a command line on Ubuntu Linux AWS cloud server. How can I two commands in sudo ‘command1 && command2’?

How to run sudo command without a password on a Linux or Unix

May 17, 2015April 18, 2017in BASH Shell, CentOS, Debian / Ubuntu, FreeBSD, Linux, Suse, UNIX last updated April 18, 2017

I‘m a new Unix system user. How do I use sudo command without a password on a Linux or Unix-like systems? I log in as [email protected] and disabled root login for ssh. After login, I need to run some commands as root user. I am the only sysadmin using my server. How do I run or execute sudo command without a password for a user named Tom under Debian/Ubuntu/CentOS Linux cloud server?

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Tag: sudo

How to append text to a file when using sudo command on Linux or Unix

Google Chrome: Clear or flush the DNS cache

How to run multiple commands in sudo under Linux or Unix

How to run sudo command without a password on a Linux or Unix

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