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Fri, 05 Sep 2025 15:00:10 -0700 (PDT) Message-ID: Subject: Re: [PATCH bpf-next v7] selftests/bpf: add BPF program dump in veristat From: Eduard Zingerman To: Andrii Nakryiko Cc: Mykyta Yatsenko , bpf@vger.kernel.org, ast@kernel.org, andrii@kernel.org, daniel@iogearbox.net, kafai@meta.com, kernel-team@meta.com, Mykyta Yatsenko Date: Fri, 05 Sep 2025 15:00:07 -0700 In-Reply-To: References: <20250905140835.1416179-1-mykyta.yatsenko5@gmail.com> <84b34c685418234c21bb3c127bb966d5744efc59.camel@gmail.com> Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable User-Agent: Evolution 3.56.2 (3.56.2-1.fc42) Precedence: bulk X-Mailing-List: bpf@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 On Fri, 2025-09-05 at 14:51 -0700, Andrii Nakryiko wrote: [...] > > Yes, but looks like it's a separate binary, not a command: > >=20 > > $ strace command -v ls 2>&1 | grep command > > execve("/usr/bin/command", ["command", "-v", "ls"], 0x7ffffeaef7b0 /*= 65 vars */) =3D 0 > >=20 > > (Not that it changes much). >=20 > You nerd sniped me here :) You get that execve("/usr/bin/command") > because strace forces the command to be resolved as binary. If you run > something like execsnoop in background and execute `command -v blah` > you won't see this execve. =C2=AF\_(=E3=83=84)_/=C2=AF Interesting, so I should have done this: $ strace bash -c 'command -v ls' 2>&1 | grep command So, it's like 'time' vs '/usr/bin/time' :)