Why is the password I entered not visible?
Below is the process I took to create a user on bash in Linux.
command-line
Deleting all files in a folder except files X, Y, and Z
I have a lot of files and folders in a specific folder and I want to delete all of them; however, I wanted to keep files X, Y, and Z.
How to boot Linux to command-line mode instead of GUI?
I am using 32-bit Red Hat Linux in my VM. I want to boot it to command-line mode, not to GUI mode. I know that from there I can switch to GUI mode using startx command. How do I switch back to command-line mode?
Set Ubuntu System Proxy Settings without Restart from commandline
I am using Ubuntu 14.04 . I want to change the http proxy settings from the command line. This should be equivalent to changing in the GUI(All Settings->Network->Network Proxy) and clicking the button Apply System Wide. I don’t want to restart/logout the system as I am planning to change the settings dynamically from a script(bash).
Characters encodings supported by more, cat and less
I have a text file encoded as following according to file:
What to use when the “ls” command doesn’t work?
I tried to use the ls command and got an error:
Safe way to pass password for >1 programs in bash
I’m writing a bash script, and need to ask user for his password and pass it to openssl. Whilst openssl can read the password itself, I need for two runs of the program and don’t want to ask the user twice. Here is the script:
What is a “non-option argument”?
I am trying to understand info who but completly fail at the term »non-option argument«. Can someone please explain this term to me in simple words or an example?
Make program first read from pipe, then from keyboard
Consider the interactive program interactive. I have to run this program fairly frequently, and each time I run it the first few commands are the same. Obviously, having to type those commands over and over again is a pain. I have collected those command (separated by newlines) in the file cmd. Now I can do cat cmd | interactive to run the commands. The problem is that once cmd has been fully read, interactive recieves EOF and exits.
How can I print well formatted code
Similar to using markdown on Stack Overflow to create monospace output, how can I do that for my programs.