Typical Unix/Linux programs accept the command line inputs as an argument count (int argc) and an argument vector (char *argv[]). The first element of argv is the program name – followed by the actual arguments.
There is a shell command that allows you to measure how fast the data goes through it, so you can measure the speed of output of commands in a pipe. So instead of:
The xargs command always confuses me. Is there a general rule for it?
How can I perform two commands on one input, without typing that input twice?
In Bash, suppose I visit a directory, and then another directory. I would like to copy a file from the first directory to the second directory, but without specifying the long pathnames of them. Is it possible?
From the bash manual, on the $? variable:
I’d like to know if there is a way that I could cat file like php.ini and remove all lines starting with ;
Today I happened to press ' after ls
So the command is ls'
I have this setup where I have computer with ssh and a display where I have a user logged in to terminal. What I want to do is send commands like I was using that local session with keyboard. I tried to echo to /dev/tty1 but it just shows what I typed instead executing it. Which makes sense. The system only has bash so no GUI or anything like that.