The heredoc program
heredoc runs a command with a certain string fed to a file descriptor.
Interface
heredoc [ -d ] fd string prog...
- heredoc execs into prog... with string available on the fd file descriptor.
- string must not contain a null character.
Options
- -d : run the process feeding string to fd as a grandchild of heredoc. This is meant to prevent a zombie from hanging around if prog... has read string and fails to wait for its children.
Notes
- heredoc is meant to be used in place of the shell << construct, which includes here-documents into scripts.