lslist directory contents,
duestimate disk usage,
nnnterminal file manager
findsearch for files and text in files, grep
curl, wgetdownload file,
rsyncremote and local file-copying tool
chownchange file owner and mode, chmod
lessview the content of a text file
aptDebian package management system,
rpmRed Hat package manager,
yumutility using RPM package manager,
dnfutility using RPM package manager
systemdsystem and service manager,
journalctlviewer of logs collected by systemd
Kernel modules, ACPIAdvanced Configuration and Power Interface (ACPI)
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