NAME

sh_flowinfo.d - snoop Bourne shell flow with additional info.

SYNOPSIS

sh_flowinfo.d

DESCRIPTION

This traces shell activity from all Bourne shells on the system that are running with sh provider support.

This watches shell function entries and returns, and indents child function calls. Shell builtins and external commands are also printed.

OS

Any

STABILITY

Evolving - uses the DTrace Shell provider, which may change as additional features are introduced. Check Shell/Readme to see what version these scripts are based on.

EXAMPLES

Default output,: # sh_flowinfo.d

FIELDS

C: CPU-id
PID: Process ID
DELTA(us): Elapsed time from previous line to this line
FILE: Filename of the shell script
LINE: Line number of filename
TYPE: Type of call (func/builtin/cmd/subsh)
NAME: Shell function, builtin or command name

WARNING

Watch the first column carefully, it prints the CPU-id. If it changes, then it is very likely that the output has been shuffled.

DOCUMENTATION

See the DTraceToolkit for further documentation under the Examples, Notes and Docs directories. The example files may be especially useful as they aim to demonstrate how to interpret the output.

EXIT

sh_flowinfo.d will run until Ctrl-C is hit.

AUTHOR

Brendan Gregg [CA, USA]