Package: procps
Version: 2:3.3.15-2
Severity: normal
File: /sbin/sysctl

Dear Maintainer,

you wrote in the 'man sysctl' for the -w option

  -w, --write
              Use this option when all arguments prescribe a key to be set.

but it's also possible to write the key without it

E.g.

sysctl kernel.domainname="example.com"

What is the function of the '-w' option? Is it optional?
The man page seems to be a little bit ambiguous.

Greetings and thanks,
Tobias
-- System Information:
Debian Release: 10.3
  APT prefers stable-updates
  APT policy: (500, 'stable-updates'), (500, 'stable')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 4.19.0-8-amd64 (SMP w/4 CPU cores)
Locale: LANG=en_US.utf8, LC_CTYPE=en_US.utf8 (charmap=UTF-8), 
LANGUAGE=en_US.utf8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages procps depends on:
ii  init-system-helpers  1.56+nmu1
ii  libc6                2.28-10
ii  libncurses6          6.1+20181013-2+deb10u2
ii  libncursesw6         6.1+20181013-2+deb10u2
ii  libprocps7           2:3.3.15-2
ii  libtinfo6            6.1+20181013-2+deb10u2
ii  lsb-base             10.2019051400

Versions of packages procps recommends:
ii  psmisc  23.2-1

procps suggests no packages.

-- no debconf information

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