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File system operations

Arc has operations to manipulate files and directories. These operations do not all work on non-Unix systems. The I/O operations are closely related to MzScheme's I/O operations.

See I/O in Arc for information on reading and writing files.

Procedure ensure-dir path
Creates the specified directory, if it doesn't exist.

>(ensure-dir "newdir") nil

Foundation dir path
Returns the directory contents as a list.

>(dir "mydir") ("foo")

Predicate dir-exists path
Tests if a directory exists.

>(dir-exists "mydir") "mydir"

file-exists path
Tests if a file exists.

>(file-exists "mydir") nil

Foundation mvfile path
Moves the specified file. New in arc3.

>(mvfile "/tmp/junk" "/tmp/newjunk") nil

rmfile path
Removes the specified file.

>(rmfile "/tmp/newjunk") Error: delete-file: cannot delete file path: /tmp/newjunk system error: No such file or directory; errno=2

Foundation rmfile path
Removes the specified file.

>(rmfile "oldfile") nil

ensure-dir path Creates the specified directory, if it doesn't exist.	>(ensure-dir "newdir") nil
dir path Returns the directory contents as a list.	>(dir "mydir") ("foo")
dir-exists path Tests if a directory exists.	>(dir-exists "mydir") "mydir"
file-exists path Tests if a file exists.	>(file-exists "mydir") nil
mvfile path Moves the specified file. New in arc3.	>(mvfile "/tmp/junk" "/tmp/newjunk") nil
rmfile path Removes the specified file.	>(rmfile "/tmp/newjunk") Error: delete-file: cannot delete file path: /tmp/newjunk system error: No such file or directory; errno=2
rmfile path Removes the specified file.	>(rmfile "oldfile") nil