How do I trim leading and trailing whitespace from each line of some output?
I would like to remove all leading and trailing spaces and tabs from each line in an output.
pipe
What are the advantages of using named pipe over unnamed pipe?
I was reviewing a set of interview questions that are asked from a unix admin; I found a topic called “named pipe”.
How to download an archive and extract it without saving the archive to disk?
I’d like to download, and extract an archive under a given directory. Here is how I’ve been doing it so far:
Difference between 2>&1 > output.log and 2>&1 | tee output.log
I wanted to know the difference between the following two commands
Piping data to a process’s stdin without causing EOF afterward
I have an executable that starts a user-interactive shell. I would like to, upon launch of the shell, inject a few commands first, then allow the user to have their interactive session. I can do this easily using echo:
Direct output to pipe and stdout
Is there a way to pipe the output of a command and direct it to the stdout as well?
What’s a good example of piping commands together?
If you were helping someone to learn the concept of pipes on the command line what example would you use? The example that actually came up was as follows:
Shell Script mktemp, what’s the best method to create temporary named pipe?
I’m aware its best to create temporary files with mktemp, but what about named pipes?
How do I pipe ls to grep, and delete the files filtered by grep?
I wanted to delete some package in my home file, but the filename was too long (google-chrome-stable_current_i386.deb). So, I decided to use the command ls|grep chrome|rm to pipe the files to grep to filter out the chrome file, and then remove it. It didn’t work, so I would like to see how I can do this.
How to filter out lines of a command output that occur in a text file?
Let’s say we have a text file of forbidden lines forbidden.txt. What is a short way to filter all lines of a command output that exist in the text file?