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Commands Reference, Volume 5

trcnm Command


Generates a kernel name list.


trcnm-a FileName ] ] | [ FileName ] | -KSymbol1 ...


The trcnm command generates a kernel name list used by the trcrpt command. A kernel name list is composed of a symbol table and a loader symbol table of an object file. The trcrpt command uses the kernel name list file to interpret addresses when formatting a report from a trace log file. For more information, see the trcrpt -n command.

If the FileName parameter is not specified, the default FileName is /unix.


-a Writes all loader symbols to standard output. The default is to write loader symbols only for system calls.
-KSymbol... Obtains the value of all command line symbols through the knlist command system call.


  1. To obtain the value of the symbols in /unix, enter:

    trcnm -K environ errno

    This command sequence displays the following:

    environ 2FF7FFF8
    errno 2FF7FFFC
  2. To print a symbol table for system calls, enter:


    A list similar to the following is generated:

    pin_obj_start    00000000
    header_offset    00000008
    ram_disk_start   0000000C
    ram_disk_end     00000010
    dbg_avail        00000014
    base_conf_start  00000018
    base_conf_end    0000001C
    base_conf_disk   00000020
    pin_com_start    00000024
    start            00000028
    ipl_cb           00000028


/var/adm/ras/trcfile Contains the default log file.
/tlo-tvl2/trcnam Contains the trcnm command.
/etc/trcfmt Contains the trace format file.

Related Information

The trcdead command, trcrpt command, trcstop command, trcupdate command.

The trace daemon.

The trcfmt file format.

Trace Facility Overview in AIX 5L Version 5.2 General Programming Concepts: Writing and Debugging Programs.

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