alarm(3p),  To run an executable file or a shell script from the command line it is often not necessary to use exec at all, just prefix the filename with ./ system(3p),  EXEC(1P) POSIX Programmer's Manual EXEC(1P), IEEE/The Open Group 2013 EXEC(1P), Options-c, --container="" Container name. signal(3p),  kubectl-exec - Man Page. aio_return(3p),  wordexp(3p),  seteuid(3p),  nohup - Run a command immune to hangups. or Execute a command in a container Synopsis. Any typographical or formatting errors that appear in this page are most likely to have been introduced during the conversion of the source files to man page format. c99(1p),  (adsbygoogle = window.adsbygoogle || []).push({}). setpgid(3p),  nice(3p),  fcntl(3p),  DESCRIPTION. .source Example 1: Example 2: close(3p),  The standard error shall be used only for diagnostic messages. To execute a program/script in the current working directory use: ./file_name Linux/UNIX system programming training courses -l Place a dash at the beginning of the zeroth arg passed to command. The functions described in this manual page are front-ends for execve(2) . globfree(3p),  getppid(3p),  aio_error(3p),  to $PATH but this is widely considered to be bad practice for security reasons. opterr(3p),  if - Conditionally perform a command. open(3p),  mmap(3p),  getitimer(3p),  awk(1p),  mlock(3p),  Run a bash script Redirection affects the current shell execution environment. In order to use this feature, you must load the header file. kubectl exec Description. getsid(3p),  exec. mlockall(3p),  (This is POSIX.1-2008 with the 2013 Technical Corrigendum 1 applied.) pthread_atfork(3p),  fstatvfs(3p),  (This is what the login program does.) PROLOG | NAME | SYNOPSIS | DESCRIPTION | OPTIONS | OPERANDS | STDIN | INPUT FILES | ENVIRONMENT VARIABLES | ASYNCHRONOUS EVENTS | STDOUT | STDERR | OUTPUT FILES | EXTENDED DESCRIPTION | EXIT STATUS | CONSEQUENCES OF ERRORS | APPLICATION USAGE | EXAMPLES | RATIONALE | FUTURE DIRECTIONS | SEE ALSO | COPYRIGHT, Pages that refer to this page: If there are no redirection errors, the return status is zero; otherwise the return status is non-zero. by Michael Kerrisk, execve(2), a system call directly to the kernel, usually just called exec; To wait for a child process to finish: wait(2), a system call directly to the kernel; To run a program in a shell in a child process and wait for it to finish: system(3), a library function; To get the man pages for all of the above: $ man 2 fork execve wait $ man 3 system su - Run a command with substitute user and group id. setuid(3p),  If command is specified, exec shall not return to the shell; rather, the exit status of the process shall be the exit status of the program implementing command, which overlaid the shell. setenv(3p),  make(1p),  mknod(3p),  newgrp(1p),  The exec utility shall open, close, and/or copy file descriptors as specified by any redirections as part of the command. mknodat(3p),  ulimit(3p),  getpgrp(3p),  (See the manual page for execve(2) for further details about the replacement of the current process image.) The exec utility shall open, close, and/or copy file descriptors as specified by any redirections as part of the command. To report such errors, see . lio_listio(3p),  pthread_sigmask(3p),  posix_spawn(3p),  getpgid(3p),  Open readfile as file descriptor 3 for reading: Most historical implementations were not conformant in that: Portions of this text are reprinted and reproduced in electronic form from IEEE Std 1003.1, 2013 Edition, Standard for Information Technology -- Portable Operating System Interface (POSIX), The Open Group Base Specifications Issue 7, Copyright (C) 2013 by the Institute of Electrical and Electronics Engineers, Inc and The Open Group. wordfree(3p). type - Describe a command. exit - Exit the shell. sigaltstack(3p),  The exec utility shall open, close, and/or copy file descriptors as specified by any redirections as part of the command. that I teach, look here. fexecve(3p),  getpid(3p),  Each system call is the word exec followed by either l or v and then possibly followed by either e or p. The first three have are of the form execl and accept a variable number of arguments. setregid(3p),  >_ exec -a [process_name] [command -with -flags], Replace with the specified command using the current environment variables, Replace with the specified command, clearing environment variables, Replace with the specified command and login using the default shell, Replace with the specified command and change the process name. The exec() family of functions creates a new process image from a regular, executable file. The exec command can be used in two modes: Exec with a command as an argument: In the first mode, the exec tries to execute it as a command passing the remaining arguments, if any, to that command and managing the redirections, if any.

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