SWI-Prolog 7.7.1

shell.pl -- Elementary shell commands

This library provides some basic shell commands from Prolog, such as pwd, ls for situations where there is no shell available or the shell output cannot be captured.

It is developed on the ST-MINIX version. MINIX did not have a vfork() call, and thus only allows shell/[0,1,2] if Prolog uses less than half the amount of available memory.

Execute an interactive shell. The executed shell is defined by the environment SHELL or comspec (Windows). If neither is defined, /bin/sh is used.

Change working directory

pushd(+Dir)

Manage the directory stack:

pushd/1 is as cd/1, pushing th old directory on a stack
pushd/0 swaps the current directory with the top of the stack
popd/0 pops to the top of the stack
dirs/0 lists the current directory and the stack.

Print current working directory

ls(+Pattern)

Listing similar to Unix =ls -F=, flagging directories with =/=.

mv(+From, +To) is det

Move (Rename) a file. If To is a directory, From is moved into the directory.

rm(+File) is det

Remove (unlink) a file

Change working directory

pushd(+Dir)

Manage the directory stack:

pushd/1 is as cd/1, pushing th old directory on a stack
pushd/0 swaps the current directory with the top of the stack
popd/0 pops to the top of the stack
dirs/0 lists the current directory and the stack.

pushd(+Dir)

Manage the directory stack:

pushd/1 is as cd/1, pushing th old directory on a stack
pushd/0 swaps the current directory with the top of the stack
popd/0 pops to the top of the stack
dirs/0 lists the current directory and the stack.

pushd(+Dir)

Manage the directory stack:

pushd/1 is as cd/1, pushing th old directory on a stack
pushd/0 swaps the current directory with the top of the stack
popd/0 pops to the top of the stack
dirs/0 lists the current directory and the stack.

ls(+Pattern)

Listing similar to Unix =ls -F=, flagging directories with =/=.