FAQ

Question: I would like to understand the basics of how to write and execute Erlang program on Linux OS. Can you explain it with a simple example? Answer: In this article, let us review very quickly how to write a basic Hello World Erlang program, Compile and execute erlang program on Linux or Unix OS. [...]

Question: Sometimes I want to repeat a command (or shell-script) frequently (every few seconds). Is there a better way to execute a unix command every n seconds (instead of keep typing the same command manually)? Answer: Using watch command you can execute a command and view it’s output every few seconds. This is very helpful [...]

Question: I’m using Sun Solaris OS. When I execute the find command, I get “find: bad option -not” as shown below. How do I fix the following error? find: bad option -not find: path-list predicate-list" in Solaris SunOS. Answer: In Linux, find command with -not option is used for inverting the match. For example: $ [...]

Question: I would like to terminate my Unix command line shell, when I don’t execute any command for N number of seconds. i.e How to automatically log out if there is no activity in a Linux shell ? Answer: TMOUT variable in bash will terminate the shell if there is no activity for N seconds [...]

As we discussed earlier in our basic ssh client commands article, when you do ssh to a machine for the 1st time (or whenever there is a key change in the remote machine), you will be prompted to say ‘yes’ for authenticity of host. This feature is controlled using StrictHostKeyChecking ssh parameter. By default StrictHostKeyChecking [...]

Question: How do I uncompress a *.7z file ( 7zip file ) in UNIX / Linux ? Can you explain with a simple example? Answer: Use 7za command to unzip a 7z file ( 7zip file ) on Unix platform as shown below. Verify whether you have 7za command on your system. # whereis 7za [...]

Question: I would like to understand the basics of how to write and execute Tcl program on UNIX / Linux OS. Can you explain it with a simple example? Answer: In this article, let us review very quickly how to write a basic Hello World Tcl program and execute tcl program on Linux or Unix [...]