{"id":6942,"date":"2019-10-07T11:10:37","date_gmt":"2019-10-07T11:10:37","guid":{"rendered":"https:\/\/www.devopsschool.com\/blog\/?p=6942"},"modified":"2020-05-28T07:15:52","modified_gmt":"2020-05-28T07:15:52","slug":"linux-interview-questions-and-answer-part-9","status":"publish","type":"post","link":"https:\/\/www.devopsschool.com\/blog\/linux-interview-questions-and-answer-part-9\/","title":{"rendered":"Linux Interview Questions and Answer &#8211; Part 9"},"content":{"rendered":"\n<ul class=\"wp-block-list\"><li>What is a tunnel and how you can bypass a http proxy?<\/li><li>What is the difference between IDS and IPS?<\/li><li>What shortcuts do you use on a regular basis?<\/li><li>What is the Linux Standard Base?<\/li><li>What is an atomic operation?<\/li><li>Your freshly configured http server is not running after a restart, what can you do?<\/li><li>What kind of keys are in ~\/.ssh\/authorized_keys and what it is this file used for?<\/li><li>I&#8217;ve added my public ssh key into authorized_keys but I&#8217;m still getting a password prompt, what can be wrong?<\/li><li>Did you ever create RPM&#8217;s, DEB&#8217;s or solaris pkg&#8217;s?<\/li><li>What does&nbsp;<code>:(){ :|:&amp; };:<\/code>&nbsp;do on your system?<\/li><li>How do you catch a Linux signal on a script?<\/li><li>Can you catch a SIGKILL?<\/li><li>What&#8217;s happening when the Linux kernel is starting the OOM killer and how does it choose which process to kill first?<\/li><li>Describe the linux boot process with as much detail as possible, starting from when the system is powered on and ending when you get a prompt.<\/li><li>What&#8217;s a chroot jail?<\/li><li>When trying to umount a directory it says it&#8217;s busy, how to find out which PID holds the directory?<\/li><li>What&#8217;s LD_PRELOAD and when it&#8217;s used?<\/li><li>You ran a binary and nothing happened. How would you debug this?<\/li><li>What are cgroups? Can you specify a scenario where you could use them?<\/li><li>How can you remove\/delete a file with file-name consisting of only non-printable\/non-type-able characters?<\/li><li>How can you increase or decrease the priority of a process in Linux?<\/li><\/ul>\n","protected":false},"excerpt":{"rendered":"<p>What is a tunnel and how you can bypass a http proxy? What is the difference between IDS and IPS? What shortcuts do you use on a regular basis? What&#8230; <\/p>\n","protected":false},"author":1,"featured_media":7808,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_joinchat":[],"footnotes":""},"categories":[4957],"tags":[],"class_list":["post-6942","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-linux"],"_links":{"self":[{"href":"https:\/\/www.devopsschool.com\/blog\/wp-json\/wp\/v2\/posts\/6942","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.devopsschool.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.devopsschool.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.devopsschool.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.devopsschool.com\/blog\/wp-json\/wp\/v2\/comments?post=6942"}],"version-history":[{"count":1,"href":"https:\/\/www.devopsschool.com\/blog\/wp-json\/wp\/v2\/posts\/6942\/revisions"}],"predecessor-version":[{"id":6943,"href":"https:\/\/www.devopsschool.com\/blog\/wp-json\/wp\/v2\/posts\/6942\/revisions\/6943"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.devopsschool.com\/blog\/wp-json\/wp\/v2\/media\/7808"}],"wp:attachment":[{"href":"https:\/\/www.devopsschool.com\/blog\/wp-json\/wp\/v2\/media?parent=6942"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.devopsschool.com\/blog\/wp-json\/wp\/v2\/categories?post=6942"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.devopsschool.com\/blog\/wp-json\/wp\/v2\/tags?post=6942"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}