What does `exec "$@"` do? - Unix & Linux Stack Exchange
Sep 5, 2018 · The exec will replace the current process with the process resulting from executing its argument. In short, exec "$@" will run the command given by the command line parameters in such …
Please explain the exec () function and its family
May 21, 2020 · What is the exec() function and its family? Why is this function used and how does its work? Please anyone explain these functions.
bash - What does an "exec" command do? - Ask Ubuntu
Sep 18, 2014 · I have seen exec command used inside scripts to redirect all output to a file (as seen in this). But in simple words, what does it do?
What are the uses of the exec command in shell scripts?
The exec built-in command mirrors functions in the kernel, there are a family of them based on execve, which is usually called from C. exec replaces the current program in the current process, without fork …
Difference between exec, execvp, execl, execv? - Stack Overflow
Apr 18, 2019 · Possible duplicate of What are the different versions of exec used for in C and C++?, What is the difference between the functions of the exec family of system calls like exec and …
c - Differences between fork and exec - Stack Overflow
Oct 31, 2009 · The use of fork and exec exemplifies the spirit of UNIX in that it provides a very simple way to start new tasks. Note the use of the word task here, I have deliberately avoided using the …
What does set -e and exec "$@" do for docker entrypoint scripts?
Jan 4, 2018 · At the exec line entrypoint.sh, the shell running as pid 1 will replace itself with the command server start. This is critical for signal handling. Without using exec, the server start in the …
command line - What does 'exec' do? - Ask Ubuntu
The exec you have executed is a shell built-in : $ type -a exec exec is a shell builtin Now from help exec : Replace the shell with the given command. Execute COMMAND, replacing this shell with the …
understanding bash "exec 1>&2" command - Stack Overflow
Oct 1, 2012 · function example() { exec 1>&2 cat <<EOT Script requires at least one parameter. EOT exit 1 } As I understand, exec 1>&2 means that everything from this point one will be directed to …
What are the different versions of exec used for in C and C++?
Apr 24, 2011 · These are all the versions of exec that can be used in C (and C++) execl execle execlp execv execve execvp What's the difference between them? How do you know which one to use?