Nov 21, 2019 · With cat < file.txt the shell will perform dup2() syscall to make stdin into a copy of file descriptor (typically next available one, e.g. 3) corresponding to file.txt and close that file …

cat is (intentionally) an extremely simple command that just reads one file stream and dumps it to another (with a few basic formatting options). It'd be fairly easy to create a utility based on cat …

Aug 15, 2015 · If you're going to just cat a newest file in one command you don't really need -l option. On Linux and Cygwin you can use -1 option and make parsing much easier: $ cat "$(ls …

Jan 21, 2018 · cat > target_file Now you're typing to cat and cat writes to target_file. Once you finish typing, hit once more Enter, and then on empty line hit Ctrl+D to end. What you've typed …

The part following cat "$NGINX_CONF" serves to copy the file from the $NGINX_CONF variable to the remote machine using ssh and perform other actions.

Mar 22, 2019 · A simple test: select a file in file manager, press Ctrl-C, open a text editor, press Ctrl-V. The result is not file's contents but its full path. In reality the situation is a bit more …

Sep 17, 2017 · $ cat .lesskey . next-file , prev-file #env LESS = iMRj5X Run lesskey to "compile" it into a ~/.less. This probably mattered more 20 years ago, but less reads that binary file instead …

If you want to show a short file, that fits on one terminal screen, and what is changing is possibly the whole file, you could use watch: watch cat example.txt. Every 2.0s: cat example.txt Sun …

Oct 24, 2017 · You can leverage cat's ability to read from stdin combined with it's ability to read multiple files to achieve this. ~$ cat file.txt Hello from file.txt ~$ echo "My final line" | cat file.txt …

That's why echo "$(cat /etc/passwd)" works. Additionally, one should be aware, that command substitution by POSIX specifications removes trailing newlines: $ echo "$(printf …