Package: systemd
Version: 237-4
Severity: normal
journalctl(1) says:
-g, --grep=
Filter output to entries where the MESSAGE= field matches the
specified regular expression. PERL-compatible regular expressions
are used, see pcre2pattern(3) for a detailed description of the
syntax.
If the pattern is all lowercase, matching is case insensitive.
Otherwise, matching is case sensitive. This can be overridden with
the --case-sensitive option, see below.
however:
0 dkg@alice:~$ journalctl --grep=hello
Compiled without pattern matching support
0 dkg@alice:~$ journalctl -g hello
journalctl: invalid option -- 'g'
1 dkg@alice:~$
note that --grep=hello returns 0 and provides a user-comprehensible
warning about why it didn't work.
but -g hello returns 1 and just gives an incomprehensible error
message that doesn't indicate why it's failing.
I think the right approach would be to return a non-zero error code in
both cases, and to print the same reasonable explanation in both
cases.
--dkg
-- Package-specific info:
-- System Information:
Debian Release: buster/sid
APT prefers testing-debug
APT policy: (500, 'testing-debug'), (500, 'testing'), (500, 'oldstable'),
(200, 'unstable-debug'), (200, 'unstable'), (1, 'experimental-debug'), (1,
'experimental')
Architecture: amd64 (x86_64)
Foreign Architectures: i386
Kernel: Linux 4.14.0-3-amd64 (SMP w/4 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8),
LANGUAGE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)
Versions of packages systemd depends on:
ii adduser 3.117
ii libacl1 2.2.52-3+b1
ii libapparmor1 2.12-3
ii libaudit1 1:2.8.2-1
ii libblkid1 2.31.1-0.4
ii libc6 2.27-1
ii libcap2 1:2.25-1.2
ii libcryptsetup12 2:2.0.1-1
ii libgcrypt20 1.8.1-4
ii libgpg-error0 1.27-6
ii libidn11 1.33-2.1
ii libip4tc0 1.6.2-1
ii libkmod2 25-1
ii liblz4-1 0.0~r131-2+b1
ii liblzma5 5.2.2-1.3
ii libmount1 2.31.1-0.4
ii libpam0g 1.1.8-3.7
ii libseccomp2 2.3.1-2.1
ii libselinux1 2.7-2+b1
ii libsystemd0 237-4
ii mount 2.31.1-0.4
ii procps 2:3.3.12-4
ii util-linux 2.31.1-0.4
Versions of packages systemd recommends:
ii dbus 1.12.6-2
ii libpam-systemd 237-4
Versions of packages systemd suggests:
ii policykit-1 0.105-18
ii systemd-container 237-4
Versions of packages systemd is related to:
ii dracut 047-2
pn initramfs-tools <none>
ii udev 237-4
-- Configuration Files:
/etc/systemd/resolved.conf changed [not included]
-- no debconf information
