c(3) - Linux man page

Module

c - Command Interface Module

Description

The c module enables users to enter the short form of some commonly used commands.

Note:

These functions are are intended for interactive use in the Erlang shell only. The module prefix may be omitted.

Exports

bt(Pid) -> void()

Types
Pid = pid()

Stack backtrace for a process. Equivalent to erlang:process_display(Pid, backtrace).

c(File) -> {ok, Module} | error
c(File, Options) -> {ok, Module} | error

Types
File = name() -- see filename(3)
Options = [Opt] -- see compile:file/2

c/1, 2 compiles and then purges and loads the code for a file. Options defaults to []. Compilation is equivalent to: 

compile:file(File, Options ++ [report_errors, report_warnings])
Note that purging the code means that any processes lingering in old code for the module are killed without warning. See code/3 for more information.

cd(Dir) -> void()

Types
Dir = name() -- see filename(3)

Changes working directory to Dir, which may be a relative name, and then prints the name of the new working directory. 

2> cd("../erlang").
/home/ron/erlang

flush() -> void()

Flushes any messages sent to the shell.

help() -> void()

Displays help information: all valid shell internal commands, and commands in this module.

i() -> void()
ni() -> void()

i/0 displays information about the system, listing information about all processes. ni/0 does the same, but for all nodes the network.

i(X, Y, Z) -> void()

Types
X = Y = Z = int()

Displays information about a process, Equivalent to process_info(pid(X, Y, Z)), but location transparent.

l(Module) -> void()

Types
Module = atom()

Purges and loads, or reloads, a module by calling code:purge(Module) followed by code:load_file(Module).

Note that purging the code means that any processes lingering in old code for the module are killed without warning. See code/3 for more information.

lc(Files) -> ok

Types
Files = [File]
File = name() -- see filename(3)

Compiles a list of files by calling compile:file(File, [report_errors, report_warnings]) for each File in Files.

ls() -> void()

Lists files in the current directory.

ls(Dir) -> void()

Types
Dir = name() -- see filename(3)

Lists files in directory Dir.

m() -> void()

Displays information about the loaded modules, including the files from which they have been loaded.

m(Module) -> void()

Types
Module = atom()

Displays information about Module.

memory() -> [{Type, Size}]

Types
Type, Size -- see erlang:memory/0

Memory allocation information. Equivalent to erlang:memory/0.

memory(Type) -> Size
memory([Type]) -> [{Type, Size}]

Types
Type, Size -- see erlang:memory/0

Memory allocation information. Equivalent to erlang:memory/1.

nc(File) -> {ok, Module} | error
nc(File, Options) -> {ok, Module} | error

Types
File = name() -- see filename(3)
Options = [Opt] -- see compile:file/2

Compiles and then loads the code for a file on all nodes. Options defaults to []. Compilation is equivalent to: 

compile:file(File, Opts ++ [report_errors, report_warnings])

nl(Module) -> void()

Types
Module = atom()

Loads Module on all nodes.

pid(X, Y, Z) -> pid()

Types
X = Y = Z = int()

Converts X, Y, Z to the pid <X.Y.Z>. This function should only be used when debugging.

pwd() -> void()

Prints the name of the working directory.

q() -> void()

This function is shorthand for init:stop(), that is, it causes the node to stop in a controlled fashion.

regs() -> void()
nregs() -> void()

regs/0 displays information about all registered processes. nregs/0 does the same, but for all nodes in the network.

xm(ModSpec) -> void()

Types
ModSpec = Module | Filename
Module = atom()
Filename = string()

This function finds undefined functions, unused functions, and calls to deprecated functions in a module by calling xref:m/1.

y(File) -> YeccRet

Types
File = name() -- see filename(3)
YeccRet = -- see yecc:file/2

Generates an LALR-1 parser. Equivalent to: 

yecc:file(File)

y(File, Options) -> YeccRet

Types
File = name() -- see filename(3)
Options, YeccRet = -- see yecc:file/2

Generates an LALR-1 parser. Equivalent to: 

yecc:file(File, Options)

See Also

compile(3), filename(3), erlang(3), yecc(3), xref(3)

Referenced By

i.atcorr(1)