NAME

       bashreadline.bt - Print bash commands system wide. Uses bpftrace/eBPF.

SYNOPSIS

       bashreadline.bt

DESCRIPTION

       bashreadline  traces  the  return  of the readline() function using uretprobes, to show the bash commands
       that were entered interactively, system wide. The entered command may fail: this is just showing what was
       entered.

       This program is also a basic example of bpftrace and uretprobes.

       Since this uses BPF, only the root user can use this tool.

REQUIREMENTS

       CONFIG_BPF and bpftrace.

EXAMPLES

       Trace bash commands system wide:
              # bashreadline.bt

FIELDS

       TIME   A timestamp on the output, in "HH:MM:SS" format.

       PID    The process ID for bash.

       COMMAND
              Entered command.

OVERHEAD

       As the rate of interactive bash commands is expected to be very  low  (<<100/s),  the  overhead  of  this
       program is expected to be negligible.

SOURCE

       This is from bpftrace.

              https://github.com/iovisor/bpftrace

       Also  look  in  the  bpftrace  distribution  for a companion _examples.txt file containing example usage,
       output, and commentary for this tool.

       This is a bpftrace version of the bcc tool of the same name. The bcc tool may provide  more  options  and
       customizations.

              https://github.com/iovisor/bcc

OS

       Linux

STABILITY

       Unstable - in development.

AUTHOR

       Brendan Gregg

SEE ALSO

       opensnoop.bt(8)

USER COMMANDS                                      2018-09-06                                 bashreadline.bt(8)