linux sleep with exec /bin/sleep

The command "exec /bin/sleep" in C language on Linux is used to replace the current process image with a new process image of the "/bin/sleep" program. The "exec" function loads the new program into the current process's memory space and starts its execution. The "/bin/sleep" program is a command-line utility that suspends the execution of the current process for a specified number of seconds. This can be used to introduce a delay in the program's execution. The "exec" function replaces the current process with the "/bin/sleep" program, effectively causing the original program to terminate and the "/bin/sleep" program to take over.