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- What does `exec $@` do? - Unix Linux Stack Exchange
The exec will replace the current process with the process resulting from executing its argument In short, exec "$@" will run the command given by the command line parameters in such a way that the current process is replaced by it (if the exec is able to execute the command at all)
- bash - What does an exec command do? - Ask Ubuntu
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 does set -e and exec $@ do for docker entrypoint scripts?
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 above example would run as another pid, and after it exits, you would return to your shell script With a shell in pid 1, a SIGTERM will be ignored by
- c - Differences between fork and exec - Stack Overflow
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 terms process or program, which you can define as: a process is an "engine of execution", something within the operating system which is capable of running a program; and a program is a specific piece of code
- understanding bash exec 1 gt; 2 command - Stack Overflow
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 stderr Is this some sort of fixed behaviour of exec one needs to know by heart or is there some good explanation behind this? I mean as I understand, exec in Bash script just invokes a command taking the same PID
- Difference between system and exec in Linux? - Stack Overflow
What is the difference between system and exec family commands? Especially I want to know which one of them creates child process to work?
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