linux: Refresh cert_management.md

- Use modern package manager invocations for Debian and Fedora.
- Remove section about Ubuntu Jaunty, released back in 2009.
- Update URLs that talk about certutil. The Oracle blog post is gone, so
  link to the archived version instead.
- Stop talking about an NSS bug fixed 11 years ago.

Change-Id: I965bb91214faed7506d2207421cd2ed165dc505e
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3891024
Commit-Queue: Thomas Anderson <thomasanderson@chromium.org>
Auto-Submit: Raphael Kubo Da Costa <raphael.kubo.da.costa@intel.com>
Reviewed-by: Thomas Anderson <thomasanderson@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1046403}

docs/linux/cert_management.md

@@ -14,8 +14,8 @@ the
 
 ### Get the tools
 
-*   Debian/Ubuntu: `sudo apt-get install libnss3-tools`
-*   Fedora: `su -c "yum install nss-tools"`
+*   Debian/Ubuntu: `sudo apt install libnss3-tools`
+*   Fedora: `sudo dnf install nss-tools`
 *   Gentoo: `su -c  "echo 'dev-libs/nss utils' >> /etc/portage/package.use &&
     emerge dev-libs/nss"` (You need to launch all commands below with the `nss`
     prefix, e.g., `nsscertutil`.)
@@ -25,14 +25,6 @@ the
 
     certutil -d sql:$HOME/.pki/nssdb -L
 
-#### Ubuntu Jaunty error
-
-Above (and most commands) gives:
-
-    certutil: function failed: security library: invalid arguments.
-
-Package version 3.12.3.1-0ubuntu0.9.04.2
-
 ### List details of a certificate
 
     certutil -d sql:$HOME/.pki/nssdb -L -n <certificate nickname>
@@ -47,9 +39,9 @@ certutil -d sql:$HOME/.pki/nssdb -A -t <TRUSTARGS> -n <certificate nickname> \
 The TRUSTARGS are three strings of zero or more alphabetic characters, separated
 by commas. They define how the certificate should be trusted for SSL, email, and
 object signing, and are explained in the
-[certutil docs](http://www.mozilla.org/projects/security/pki/nss/tools/certutil.html#1034193)
+[certutil docs](https://firefox-source-docs.mozilla.org/security/nss/legacy/tools/nss_tools_certutil/index.html)
 or
-[Meena's blog post on trust flags](https://blogs.oracle.com/meena/entry/notes_about_trust_flags).
+[Meena's blog post on trust flags](https://web.archive.org/web/20131212024426/https://blogs.oracle.com/meena/entry/notes_about_trust_flags).
 
 For example, to trust a root CA certificate for issuing SSL server certificates,
 use
@@ -73,11 +65,6 @@ certutil -d sql:$HOME/.pki/nssdb -A -t "P,," -n <certificate nickname> \
 -i <certificate filename>
 ```
 
-This should work now, because
-[NSS bug 531160](https://bugzilla.mozilla.org/show_bug.cgi?id=531160) is claimed
-to be fixed in a related bug report.  If it doesn't work, then to work around
-the NSS bug, you have to trust it as a CA using the "C,," trust flags.
-
 #### Add a personal certificate and private key for SSL client authentication
 
 Use the command: