Property:trap (bashcmd)

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BoxMatrix >> Shell-Commands >> trap (bashcmd)

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Name-Collision - multiple objects in this wiki use the name trap! trap (bashcmd) Trap signals and other events. trap (bbcmd) Trap signals.

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Bash-Command

Command:	trap (bashcmd)   -   type bash	Wiki	Freetz	IPPF	whmf	AVM	Web
Location:	Shell-Commands >> Bash-Commands   -   Origin: Bash
Path:	Release: <bash> Lab+Rel: <bash>
Properties:	Size:   -   Firmware: 7.04 - 8.00
Function:	Trap signals and other events.

Goto:   GPL-Browser  -  Dependencies   -   Model-Matrix   -   Symbols   -   SMW-Browser

Details

Excerpt from:   Bash source   >>   trap command

Possible #if / #endif blocks are compile options. There is no mechanism yet on BoxMatrix to detect which of these are set per model.

trap [-lp] [[arg] signal_spec ...]

Trap signals and other events.

Defines and activates handlers to be run when the shell receives signals
or other conditions.

ARG is a command to be read and executed when the shell receives the
signal(s) SIGNAL_SPEC.  If ARG is absent (and a single SIGNAL_SPEC
is supplied) or `-', each specified signal is reset to its original
value.  If ARG is the null string each SIGNAL_SPEC is ignored by the
shell and by the commands it invokes.

If a SIGNAL_SPEC is EXIT (0) ARG is executed on exit from the shell.  If
a SIGNAL_SPEC is DEBUG, ARG is executed before every simple command.  If
a SIGNAL_SPEC is RETURN, ARG is executed each time a shell function or a
script run by the . or source builtins finishes executing.  A SIGNAL_SPEC
of ERR means to execute ARG each time a command's failure would cause the
shell to exit when the -e option is enabled.

If no arguments are supplied, trap prints the list of commands associated
with each signal.

Options:
  -l    print a list of signal names and their corresponding numbers
  -p    display the trap commands associated with each SIGNAL_SPEC

Each SIGNAL_SPEC is either a signal name in <signal.h> or a signal number.
Signal names are case insensitive and the SIG prefix is optional.  A
signal may be sent to the shell with 'kill -signal $$'.

Exit Status:
Returns success unless a SIGSPEC is invalid or an invalid option is given.

Excerpt from:   bashref.info   >>   Bourne Shell Builtins   >>   trap command

trap [-lp] [ARG] [SIGSPEC ...]

The commands in ARG are to be read and executed when the shell
receives signal SIGSPEC.  If ARG is absent (and there is a single
SIGSPEC) or equal to '-', each specified signal's disposition is
reset to the value it had when the shell was started.  If ARG is
the null string, then the signal specified by each SIGSPEC is
ignored by the shell and commands it invokes.  If ARG is not
present and '-p' has been supplied, the shell displays the trap
commands associated with each SIGSPEC.  If no arguments are
supplied, or only '-p' is given, 'trap' prints the list of commands
associated with each signal number in a form that may be reused as
shell input.  The '-l' option causes the shell to print a list of
signal names and their corresponding numbers.  Each SIGSPEC is
either a signal name or a signal number.  Signal names are case
insensitive and the 'SIG' prefix is optional.

If a SIGSPEC is '0' or 'EXIT', ARG is executed when the shell
exits.  If a SIGSPEC is 'DEBUG', the command ARG is executed before
every simple command, 'for' command, 'case' command, 'select'
command, every arithmetic 'for' command, and before the first
command executes in a shell function.  Refer to the description of
the 'extdebug' option to the 'shopt' builtin (*note The Shopt
Builtin::) for details of its effect on the 'DEBUG' trap.  If a
SIGSPEC is 'RETURN', the command ARG is executed each time a shell
function or a script executed with the '.' or 'source' builtins
finishes executing.

If a SIGSPEC is 'ERR', the command ARG is executed whenever a
pipeline (which may consist of a single simple command), a list, or
a compound command returns a non-zero exit status, subject to the
following conditions.  The 'ERR' trap is not executed if the failed
command is part of the command list immediately following an
'until' or 'while' keyword, part of the test following the 'if' or
'elif' reserved words, part of a command executed in a '&&' or '||'
list except the command following the final '&&' or '||', any
command in a pipeline but the last, or if the command's return
status is being inverted using '!'.  These are the same conditions
obeyed by the 'errexit' ('-e') option.

Signals ignored upon entry to the shell cannot be trapped or reset.
Trapped signals that are not being ignored are reset to their
original values in a subshell or subshell environment when one is
created.

The return status is zero unless a SIGSPEC does not specify a valid
signal.

GPL-Browser

Daily updated index of all trap code findings on the GPL-Browser. Last update: 2024-12-23 05:02 GMT.
The Browse column points to the Path containing the respective source code on the gpl.boxmatrix.info service.
The SoC column lists the Chip-Codenames, the Model column lists the nicks of the Box-Models.
The Diff column links the comparison of the AVM Kernel to the pristine original from Kernel.org.
The Download column links the full tarball the respective directory content is extracted from.
The presence of the source does not mean it fits the respective model and architecture. See the Model-Matrix where it's used.

Browse	Path	SoC	Arch	Model	Firmw	Diff	Download
puma7-atom-6591-750	packages/bash-4.4.18/builtins	Puma7	ATOM	6591	7.50	4.9.279	Download
puma7-atom-6670-761	packages/bash-5.1.16/builtins	Puma7	ATOM	6670	7.61	5.15.111	Download
2 directories containing trap source code

Dependencies

Daily updated index of all dependencies of this command. Last update: 2024-12-23 07:59 GMT.
A * in the Mod column marks info from Supportdata-Probes, which will always stay incomplete.

Relation	Typ	Object	Mod	Firmware	Info	Origin
0 dependencies for this command

Model-Matrix

Daily updated index of the presence, path and size of this command for each model. Last update: 2024-12-23 05:43 GMT.
Showing all models using this command. Click any column header (click-wait-click) to sort the list by the respective data.
The (main/scrpn/boot/arm/prx/atom/rtl) label in the Model column shows which CPU is meant for Multi-Linux models.
Note that this list is merged from Firmware-Probes of all known AVM firmware for a model, including Recovery.exe and Labor-Files.

Model	Firmware	Path	Size
FRITZ!Box 6591 Cable (atom)	7.04 - 8.00	<bash>
FRITZ!Box 6660 Cable (atom)	7.14 - 8.00	<bash>
FRITZ!Box 6670 Cable (atom)	7.61 - 7.90	<bash>
FRITZ!Box 6690 Cable (atom)	7.28 - 7.90	<bash>
4 models use this command

Symbols

Daily updated index of all symbols of this command. Last update: 2024-12-23 07:59 GMT.

Firmware	Symbol
0 symbols for this command

SMW-Browser

Property:trap (bashcmd)

Information is currently being retrieved from the backend.