BashBeginner
Check inode utilization
Report inode availability when small-file counts can exhaust capacity before disk bytes.
Linux & Bash
25 practical automations
Linux & Bash
Command-line recipes for Linux environments. Each guide includes full code, usage instructions, and ideas for making it your own.
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Describe CPU topology
Read architecture, threads, cores, sockets, NUMA, and virtualization metadata.
Linux & Bash
BashBeginner
Find deleted files still held open
Report unlinked files whose blocks may remain allocated because a process holds them open.
Linux & Bash
BashBeginner
Inspect active login sessions
Show active login sessions with idle duration and process activity.
Linux & Bash
BashBeginner
Inspect active swap
List active swap devices and files with size, usage, and priority.
Linux & Bash
BashBeginner
Inspect block devices
Display disks, partitions, filesystem types, and mount points without repairing anything.
Linux & Bash
BashBeginner
Inspect cached package updates
Report updates from existing APT or DNF metadata without refreshing or installing.
Linux & Bash
BashBeginner
Inspect command resolution
Find Bash builtins and PATH matches for command names without executing those commands.
Linux & Bash
BashBeginner
Inspect local listening sockets
List local TCP and UDP listeners and visible process information.
Linux & Bash
BashBeginner
Inspect mount options
Display the filesystem source, type, and options for a selected path.
Linux & Bash
BashBeginner
Inspect resolver settings
Show systemd resolver configuration or fall back to resolv.conf without sending queries.
Linux & Bash
BashBeginner
Inspect SSH file modes
Display owners and permission modes for a selected SSH directory without printing key contents.
Linux & Bash
BashBeginner
Inventory PCI devices
List PCI hardware identifiers and kernel driver bindings.
Linux & Bash
BashBeginner
Inventory USB devices
List locally connected USB devices with numeric vendor and product IDs.
Linux & Bash
BashBeginner
List failed systemd services
Show service units currently failed without restarting them.
Linux & Bash
BashBeginner
Rank service startup durations
Read systemd service activation durations from this boot.
Linux & Bash
BashBeginner
Read interface packet counters
Inspect byte, packet, error, and drop counters for network interfaces.
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BashBeginner
Read kernel warnings
Show the last 100 warning and error messages retained in the kernel ring buffer.
Linux & Bash
BashBeginner
Read recent journal errors
Show a bounded window of error-level systemd journal records.
Linux & Bash
BashBeginner
Read the current user crontab
Inspect scheduled cron commands for the current account without changing jobs.
Linux & Bash
BashBeginner
Report filesystem capacity
Show filesystem sizes and utilization for one local path.
Linux & Bash
BashBeginner
Report local routes
Read IPv4 and IPv6 routing tables without sending traffic.
Linux & Bash
BashBeginner
Review boot and shutdown history
Display a bounded list of reboot and shutdown records from wtmp.
Linux & Bash
BashBeginner
Summarize immediate directory sizes
Measure used disk blocks for a directory and its children without crossing filesystems.
Linux & Bash
BashBeginner
Take virtual-memory samples
Combine memory totals with three timed vmstat interval samples.
Linux & Bash