Difference between exec, execvp, execl, execv?

Summary: In your case I would recommend to use execvp. To find out the differences between the exec* functions you should read the documentation:https://linux.die.net/man/3/exechttps://linux.die.net/man/2/execve The difference between execl* and execv* is the argument passing. execl* require a list of arguments while execv* require a vector of arguments.A list of arguments is useful if you know … Read more

Pipe to/from the clipboard in a Bash script

2018 answer Use clipboard-cli. It works with macOS, Windows, Linux, OpenBSD, FreeBSD, and Android without any real issues. Install it with: Then you can do: If you want, you can alias to cb by putting the following in your .bashrc, .bash_profile, or .zshrc:

Bash export command

export is a Bash builtin, echo is an executable in your $PATH. So export is interpreted by Bash as is, without spawning a new process. You need to get Bash to interpret your command, which you can pass as a string with the -c option: ALSO: Each invocation of bash -c starts with a fresh … Read more

Wait for user input in C?

From the GNU C Library Manual: Function: char * fgets (char *s, int count, FILE *stream) The fgets function reads characters from the stream stream up to and including a newline character and stores them in the string s, adding a null character to mark the end of the string. You must supply count characters … Read more

Why does “docker attach” hang?

It does not really hang. As you can see in the comment below (You are running “/bin/bash” as command) it seems to be expected behaviour when attaching. As far as I understand you attach to the running shell and just the stdin/stdout/stderr – depending on the options you pass along with the run command – … Read more