I’m always forgetting the syntax to make “for” loops in Bash. I know I will have to come back here to find it, so I thought I would write put up this quick example with the hope that it will be useful to others as well.
Here is a quick one line command to generate a random password from the Linux command line.
# < /dev/urandom tr -dc _A-Z-a-z-0-9 | head -c8
This will create an 8 character long password. To make it longer or shorter change c8 to c# (# being whatever number you want).
Another way to go about this is the pwgen command. Simply install pwgen and execute it and it will give you a bunch of random passwords, simply pick one out of the bunch.
Try this:
# cat /bin/cat
Behold! Your terminal looks like garbage. Everything you type looks like you’re looking into the Matrix. What do you do?
You type reset. But wait you say, typing reset is too close to typing reboot or shutdown. Your palms start to sweat—especially if you are doing this on a production machine.
Rest assured: You can do it with the confidence that no machine will be rebooted. Go ahead, do it:
# reset
Now your screen is back to normal. This is much better than closing the window and then logging in again, especially if you just went through five machines to SSH to this machine.
See this and other help tips here.
let us see how to use find command
(a) To gain lots of useful information about users and their files
(b) Monitor and enhance the security of system using find command