ltrace(1)ltrace(1)NAMEltrace - trace inter-module procedure calls
SYNOPSIS
logfile] executable argument]
Remarks
is not available on PA-RISC systems. Currently is available only for
32-bit applications on Integrity systems.
DESCRIPTION
is a call tracing tool that traces procedure calls across different
load modules in an application (the executable on the command line).
logs trace messages to a file.
By default, logs messages to a file named which is created in the cur‐
rent working directory. Trace messages can be logged to a specified
file using the option. Subsequent invocations of append the trace mes‐
sages to the existing logfile even if the application is different. To
log messages in different files, use the option by specifying a differ‐
ent filename at each invocation.
shows the arguments in the procedure call if the load module is built
in debug mode. In addition, arguments of some commonly used routines
are shown even if the debug version of is not available.
Options
recognizes the following options:
By default creates a file named to log the trace messages.
Use this option to specify a different log file
name for logging trace messages. See
Subsequent invocations of append the trace mes‐
sages to the existing logfile even if the appli‐
cation is different. To log messages in differ‐
ent files, specify a different filename at each
invocation of the command.
Specify the argument(s) to be passed to the appli‐
cation.
Multiple arguments should be given
within quotes. See
EXTERNAL INFLUENCES
Environment Variables
uses the following environment variables to locate shared
libraries.
These environment variables can be
used to specify the directories
to be searched for
library files at run‐
time. The value is a
colon-separated list
of paths of such
directories. For
more information, see
in dld.so(5) or the
option in ld(1).
The following internationalization vari‐
ables affect the execution of
Determines the locale category for
native language, local customs,
and coded character
set in the absence of
and other environment
variables. If is not
specified or is set
to an empty string, a
default of is used
instead of (see
lang(5)).
Determines the values for all locale
categories and has
precedence over and
other environment
variables.
Determines the locale that should be
used to affect the format
and contents of diag‐
nostic messages writ‐
ten to standard
error.
Determines the locale category for
numeric formatting.
Determines the locale category for
character handling functions.
Determines the location of message
catalogs for the processing of
If any internationalization variable con‐
tains an invalid setting, behaves as if all
internationalization variables are set to
See environ(5) for more information about
environment variables.
RETURN VALUE
returns zero on success. A non-zero value
is returned in case of failure.
EXAMPLES
In the following example, creates a file
named in the current working directory,
traces procedure calls to all libraries
used by the application, and logs the mes‐
sages in
The file contains the following trace mes‐
sages:
The following invocation creates a logfile
named to log the trace messages:
The following invocation shows how to pass
the argument to the command being traced:
The following invocation shows how to pass
multiple arguments:
AUTHOR
was developed by the Hewlett-Packard Com‐
pany.
FILES
32-bit Integrity system dynamic loader
64-bit Integrity system dynamic loader
message catalog
ALSO SEE
System Tools
ldd(1) Lists dynamic depen‐
dencies of executable
files and shared
libraries.
Miscellaneous
a.out(4) assembler, compiler,
and linker output.
dld.so(5) dynamic loader.
Texts and Tutorials
Integrity Systems Onlyltrace(1)
