MacOS support

[amebru]

The other PRs with MacOS support have been dead for over a year, so I made a new one for my work.

Changelog

1. /etc/os-release - replaced with sw_vers
2. lscpu - replaced with sysctl
3. /proc/cpuinfo and /proc/meminfo - linux virtual filesystems; replaced with macOS equivalents using sysctl and vm_stat
4. lastlog - replaced with last
5. uptime -p - macOS uptime doesn't support -p flag; manually calculated from boot time

These changes were intended to fix these errors that I got upon running the original version of the script:

/Users/amelia/.local/bin/machine_report.sh: line 235: /etc/os-release: No such file or directory
/Users/amelia/.local/bin/machine_report.sh: line 236: ${ID^} ${VERSION} ${VERSION_CODENAME^}: bad substitution
/Users/amelia/.local/bin/machine_report.sh: line 257: lscpu: command not found
/Users/amelia/.local/bin/machine_report.sh: line 258: lscpu: command not found
/Users/amelia/.local/bin/machine_report.sh: line 264: lscpu: command not found
/Users/amelia/.local/bin/machine_report.sh: line 265: lscpu: command not found
grep: /proc/cpuinfo: No such file or directory
grep: /proc/meminfo: No such file or directory
grep: /proc/meminfo: No such file or directory
awk: division by zero
 source line number 1
/Users/amelia/.local/bin/machine_report.sh: line 302: lastlog: command not found
uptime: illegal option -- p
usage: uptime

Output

┌┬┬┬┬┬┬┬┬┬┬┬┬┬┬┬┬┬┬┬┬┬┬┬┬┬┬┬┬┬┬┬┬┬┬┬┬┬┬┬┬┬┬┬┬┬┬┬┬┬┬┐
├┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┤
│          UNITED STATES GRAPHICS COMPANY          │
│              TR-100 MACHINE REPORT               │
├───────────────┬──────────────────────────────────┤
│ OS            │ macOS 15.7.1                     │
│ KERNEL        │ Darwin 24.6.0                    │
├───────────────┼──────────────────────────────────┤
│ HOSTNAME      │ MacBookAir                       │
│ MACHINE IP    │ 192.168.0.195                    │
│ CLIENT  IP    │ 20:40                            │
│ DNS  IP 1     │ 192.168.0.1                      │
│ DNS  IP 2     │ 2a02:8109:a391:3a00:10:18ff:f... │
│ USER          │ amelia                           │
├───────────────┼──────────────────────────────────┤
│ PROCESSOR     │ Intel(R) Core(TM) i3-1000NG4 CPU │
│ CORES         │ 4 vCPU(s) / 1 Socket(s)          │
│ HYPERVISOR    │ Bare Metal                       │
│ CPU FREQ      │ 1.10 GHz                         │
│ LOAD  1m      │ ██████████████████░░░░░░░░░░░░░░ │
│ LOAD  5m      │ ████████████████████████████████ │
│ LOAD 15m      │ ████████████████████████████████ │
├───────────────┼──────────────────────────────────┤
│ VOLUME        │ 10.00/233.00 GB [4.29%]          │
│ DISK USAGE    │ █░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░ │
├───────────────┼──────────────────────────────────┤
│ MEMORY        │ 10.81/16.00 GiB [67.54%]         │
│ USAGE         │ █████████████████████░░░░░░░░░░░ │
├───────────────┼──────────────────────────────────┤
│ LAST LOGIN    │ Nov 6 20:46 -                    │
│ UPTIME        │ 6d 1m                            │
└───────────────┴──────────────────────────────────┘