Update cheatsheets

linux/systemd-analyze

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+---
+syntax: markdown
+tags: [tldr, linux]
+source: https://github.com/tldr-pages/tldr.git
+---
+# systemd-analyze
+
+> Analyze and debug system manager.
+> Show timing details about the boot process of units (services, mount points, devices, sockets).
+> More information: <https://www.freedesktop.org/software/systemd/man/systemd-analyze.html>.
+
+- List all running units, ordered by the time they took to initialize:
+
+`systemd-analyze blame`
+
+- Print a tree of the time-critical chain of units:
+
+`systemd-analyze critical-chain`
+
+- Create an SVG file showing when each system service started, highlighting the time that they spent on initialization:
+
+`systemd-analyze plot > {{path/to/file.svg}}`
+
+- Plot a dependency graph and convert it to an SVG file:
+
+`systemd-analyze dot | dot -T{{svg}} > {{path/to/file.svg}}`
+
+- Show security scores of running units:
+
+`systemd-analyze security`