Unix how long does it take

Good luck! EDIT: Whoawhoawhoa, sorry! I missed another big ticket topic in Linux: privileges. Understand what drwx-rw-rw- means, or -rwx-wx-wx, or any of those variants. Also learn about chmod which you use to set privileges , su , and sudo. Know what root is. These are also incredibly important to understanding Linux commands. It's also nice to know about variables and path great examples of the text-centric nature of Linux.

Now I'm at least missing less. That was a great post, except you did miss one of the commands I use the most: less! The reason for the name? Because less is more! Haha nice segue! I actually mean to implicitly include that under the section where I mention cat. You just made me realize I forgot to add "etc. You need to be a member in order to leave a comment. Sign up for a new account in our community.

It's easy! Already have an account? Sign in here. By using this site, you agree to our Terms of Use and Privacy Policy. How long will it take to learn Unix commands? I dont get it, what are the comments for?

I'm with j0h -- how do you actually use this? You've shown how to invoke it, but not how to acquire the result. Experimentally, I've determined that the result is printed to stdout if the command has no output of its own, but what if it does? And what are the meanings of --getsomecoffee and --callmom? Does this somehow label the thing being timed? This answer needs improvement.

And yes, I'm aware two years have gone by. Hence, as Michael said, if the file already exists perhaps because you started this earlier and then cancelled it , make sure you remove it first. If you do this inside a for loop, each pass through the loop will destroy what you put in the file last time through. The short answer is, probably an hour or so.

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Visit chat. Related Hot Network Questions. Question feed. Stack Overflow works best with JavaScript enabled. Here is an easy two-step process to identify process IDs in Unix systems and then determine how long they've been running for.

Like 7. Join the DZone community and get the full member experience. Join For Free. Linux Commands to Find Process Runtimes As I said, there is no single command, which can tell us that from how long a process is running. Step 2: Find the Runtime or Start Time of a Process Once you have the PID, you can look into proc directory for that process and check the creation date, which is when the process was started.