coreutils (or GNU core utilities) are a set of commands inherited from Unix and implemented by the GNU project.

These commands are pretty much available on all GNU/Linux systems, no matter the distro.

The following is a table of coreutil commands. You can use man <command> or --help option to learn what each command does.

chcon      chgrp      chown      chmod      cp         dd         df        
dir        dircolors  install    ln         ls         mkdir      mkfifo    
mknod      mktemp     mv         realpath   rm         rmdir      shred     
sync       touch      truncate   vdir       b2sum      base32     base64    
basenc     cat        cksum      comm       csplit     cut        expand    
fmt        fold       head       join       md5sum     nl         numfmt    
od         paste      ptx        pr         sha1sum    sha224sum  sha256sum 
sha384sum  sha512sum  shuf       sort       split      sum        tac       
tail       tr         tsort      unexpand   uniq       wc         arch      
basename   chroot     date       dirname    du         echo       env       
expr       factor     false      groups     hostid     id         link      
logname    nice       nohup      nproc      pathchk    pinky      printenv  
printf     pwd        readlink   runcon     seq        sleep      stat      
stdbuf     stty       tee        test       timeout    true       tty       
uname      unlink     uptime     users      who        whoami     yes       
[                                                                          

• https://en.wikipedia.org/wiki/GNU_Core_Utilities