c
Command interface module.
This module enables users to enter the short form of some commonly used commands.
Note!
These functions are intended for interactive use in the Erlang shell only. The module prefix can be omitted.
Functions
bt(Pid) -> ok | undefined
Pid = pid()
Stack backtrace for a process. Equivalent to
erlang:process_display(
.
c(File) -> {ok, Module} | error
File = file:name()
Module = module()
c(File, Options) -> {ok, Module} | error
File = file:name()
Options = [compile:option()]
Module = module()
Compiles and then purges and loads the code for a file.
defaults to []
. Compilation is
equivalent to:
compile:file(File ,Options ++ [report_errors, report_warnings])
Notice that purging the code means that any processes
lingering in old code for the module are killed without
warning. For more information, see code/3
.
cd(Dir) -> ok
Dir = file:name()
Changes working directory to
, which can be a
relative name, and then prints the name of the new working
directory.
Example:
2> cd("../erlang").
/home/ron/erlang
flush() -> ok
Flushes any messages sent to the shell.
help() -> ok
Displays help information: all valid shell internal commands, and commands in this module.
i() -> ok
ni() -> ok
i/0
displays system information, listing
information about all processes. ni/0
does the same,
but for all nodes the network.
i(X, Y, Z) -> [{atom(), term()}]
X = Y = Z = integer() >= 0
Displays information about a process, Equivalent to
process_info(pid(
, but location transparent.
l(Module) -> code:load_ret()
Module = module()
Purges and loads, or reloads, a module by calling
code:purge(
followed by
code:load_file(
.
Notice that purging the code means that any processes
lingering in old code for the module are killed without
warning. For more information, see code/3
.
lc(Files) -> ok
Files = [File]
File
Compiles a list of files by calling
compile:file(File, [report_errors, report_warnings])
for each
File
in Files
.
For information about File
, see
file:filename()
.
ls() -> ok
Lists files in the current directory.
m() -> ok
Displays information about the loaded modules, including the files from which they have been loaded.
m(Module) -> ok
Module = module()
Displays information about
.
memory() -> [{Type, Size}]
Type = atom()
Size = integer() >= 0
Memory allocation information. Equivalent to
erlang:memory/0
.
memory(Type) -> Size
memory(Types) -> [{Type, Size}]
Type = atom()
Size = integer() >= 0
Types = [Type]
Memory allocation information. Equivalent to
erlang:memory/1
.
nc(File) -> {ok, Module} | error
File = file:name()
Module = module()
nc(File, Options) -> {ok, Module} | error
File = file:name()
Options = [Option] | Option
Option = compile:option()
Module = module()
Compiles and then loads the code for a file on all nodes.
defaults to []
.
Compilation is equivalent to:
compile:file(File ,Options ++ [report_errors, report_warnings])
nl(Module) -> abcast | error
Module = module()
Loads
on all nodes.
pid(X, Y, Z) -> pid()
X = Y = Z = integer() >= 0
Converts
,
,
to pid <X.Y.Z>
.
This function is only to be used when debugging.
pwd() -> ok
Prints the name of the working directory.
q() -> no_return()
This function is shorthand for init:stop()
, that is,
it causes the node to stop in a controlled fashion.
regs() -> ok
nregs() -> ok
regs/0
displays information about all registered
processes. nregs/0
does the same, but for all nodes
in the network.
uptime() -> ok
Prints the node uptime (as specified by
erlang:statistics(wall_clock)
) in human-readable form.
xm(ModSpec) -> void()
ModSpec = Module | Filename
Module = atom()
Filename = string()
Finds undefined functions, unused functions,
and calls to deprecated functions in a module by calling
xref:m/1
.
y(File) -> YeccRet
File = name()
YeccRet
Generates an LALR-1 parser. Equivalent to:
yecc:file(File)
For information about File = name()
, see
filename(3)
.
For information about YeccRet
, see
yecc:file/2
.
y(File, Options) -> YeccRet
File = name()
Options, YeccRet
Generates an LALR-1 parser. Equivalent to:
yecc:file(File, Options)
For information about File = name()
, see
filename(3)
.
For information about Options
and YeccRet
, see
yecc:file/2
.