The command line arguments given to the process. The first element is the command name used to invoke the program. The following elements are the command-line arguments given to the program.
For all of the following functions, ?follow_symlinks defaults to true.
file_exists ~follow_symlinks path
Test whether the file in path exists on the file system.
If follow_symlinks is true and path is a symlink the result concerns
the target of the symlink.
`Unknown is returned for files for which we cannot successfully determine
whether they are on the system or not (e.g. files in directories to which we
do not have read permission).
Same as file_exists but blows up on `Unknown
Returns `Yes if the file exists and is a directory
Returns `Yes if the file exists and is a regular file
Rename a file. The first argument is the old name and the second is the new
name. If there is already another file under the new name, rename may
replace it, or raise an exception, depending on your operating system.
Return the value associated to a variable in the process environment. Return None
if the variable is unbound.
Execute the given shell command and return its exit code.
command_exn command runs command and then raises an exception if it
returns with nonzero exit status.
command_exn command runs command and then raises an exception if it
returns with nonzero exit status.
Return the names of all files present in the given directory. Names
denoting the current directory and the parent directory ("." and ".." in
Unix) are not returned. Each string in the result is a file name rather
than a complete path. There is no guarantee that the name strings in the
resulting array will appear in any specific order; they are not, in
particular, guaranteed to appear in alphabetical order.
This reference is initially set to false in standalone programs and to
true if the code is being executed under the interactive toplevel system
ocaml.
Operating system currently executing the Caml program. One of
"Unix" (for all Unix versions, including Linux and Mac OS X),"Win32" (for MS-Windows, OCaml compiled with MSVC++ or Mingw),"Cygwin" (for MS-Windows, OCaml compiled with Cygwin).Size of one word on the machine currently executing the Caml program, in bits: 32 or 64.
Warning: this function clobbers the Signal.int (SIGINT) handler. SIGINT is the signal that's sent to your program when you hit CTRL-C.
Warning: catch_break uses deep ocaml runtime magic to raise Sys.Break inside of the main execution context. Consider explicitly handling Signal.int instead. If all you want to do is terminate on CTRL-C you don't have to do any special setup, that's the default behavior.
catch_break governs whether interactive interrupt (ctrl-C) terminates the
program or raises the Break exception. Call catch_break true to enable
raising Break, and catch_break false to let the system terminate the
program on user interrupt.
ocaml_version is the version of Objective Caml. It is a string of the form
"major.minor[.patchlevel][+additional-info]", where major, minor, and
patchlevel are integers, and additional-info is an arbitrary string. The
[.patchlevel] and [+additional-info] parts may be absent.
execution_mode tests whether the code being executed was compiled natively
or to bytecode.
last_accessed path returns the time path was last accessed.
For files, the access time is updated whenever the file is read or executed.
Note that some filesystems do not implement access time updates, or may allow
mounting with access time updates disabled.
last_modify path returns the time the file at path was last modified.
For files, the modify time is updated whenever path is written to, or if
its status attributes are updated.
last_changed path returns the time path last had its status changed.
This is not the same as last modified, as the last status change will also
be updated if path's ownership or permissions change.