bashreadline(8) System Manager's Manual bashreadline(8)
bashreadline - Print entered bash commands system wide. Uses Linux eBPF/bcc.
bashreadline traces the return of the readline() function using uprobes, 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 eBPF/bcc and uprobes.
This makes use of a Linux 4.5 feature (bpf_perf_event_output()); for kernels older than
4.5, see the version under tools/old, which uses an older mechanism
Since this uses BPF, only the root user can use this tool.
CONFIG_BPF and bcc.
Trace bash commands system wide:
TIME Time of the command (HH:MM:SS).
PID Process ID of the bash shell.
As the rate of interactive bash commands is expected to be very low (<<100/s), the over‐
head of this program is expected to be negligible.
This is from bcc.
Also look in the bcc distribution for a companion _examples.txt file containing example
usage, output, and commentary for this tool.
Unstable - in development.
USER COMMANDS 2016-01-28 bashreadline(8)