am a new Unix system admin. How do I find ouw who has recently use the Linux or Unix-like server? Which terminals they used, and when they logged in and out of the my server?
I am a new Linux and Unix-like system command line user. How do I find and locate the binary, source, and manual page files for a given command?
have four Apache backend servers in front of nginx reverse proxy server
. How do I make sure nginx reverse proxy load balancer always send specific client IP address (say IP 22.214.171.124) request to http://apachereadwrite/ backend and rest to http://apachereadonly/ backend?
am a new Python user. I would like to delay execution for five seconds in a Python script. How do I add a time delay in Python on Unix/Linux? Is there a sleep command in python like the Unix/Linux sleep utility to suspend execution
of a bash script?
pache has status page that can provide data about Apache. How do I enable and display such page using nginx server? How do I enable nginx status page on Linux or Unix-like operating systems?
recently learned that “wget” can continue getting a partially-downloaded (resume download) file
. I am unable to find wget command on Mac OS X. How do I install install wget on Mac OS X (Mountain Lion/ Mavericks / Snow Leopard)? How can I install wget in Mac OS X without 3rd-party repo such as Homebrew or MacPorts?
y MySQL database installation has been corrupted. I would like to delete old mysql server. How do I reinstall MySQL database server version 5.x on Linux or Unix-like oses? A software upgrade broke my system. How can I uninstall and re-install mysql again to get fresh full mysql again?