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Linux Commands
Get familiar with the environment
Listing some useful ones:
• id: know yourself
• w: who is logged in (-f to find where they are logging in from)
• lsblk: list block storage devices • lscpu: display info about the CPUs
• lstopo: display hardware topology (need hwloc, hwloc-gui packages)
• free: free and used memory (try free -g)
Command Navigation
• lsb_release: distribution info (try -a)
Be nice and fly under the radar, eg.: nice -n 19 tar cvzf archive.tgz large_dir
Saving some time and hair follicles
!! repeats the last command
• !$ change command keep last argument:
• cat states.txt # file too long to fit screen • less !$ #reopen it with less
• !* change command keep all arguments:
• head states.txt | grep '^Al' #should be tail
• tail !* #no need to type the rest of the command
Find Command
Find Command Structure
Examples
Scheduling Tasks
Anatomy of crontab entry
Last modified 2yr ago