-- scripting --
[                - check file types and compare values
basename         - strip directory and suffix from filenames
dirname          - strip last component from file name
echo             - display a line of text
env              - run a program in a modified environment
expr             - evaluate expressions
false            - do nothing, unsuccessfully
nice             - run a program with modified scheduling priority
nohup            - run a command immune to hangups, with output to a non-tty
numfmt           - Convert numbers from/to human-readable strings
pathchk          - check whether file names are valid or portable
printenv         - print all or part of environment
printf           - format and print data
pwd              - print name of current/working directory
readlink         - print resolved symbolic links or canonical file names
realpath         - print the resolved path
runcon           - run command with specified security context
seq              - print a sequence of numbers
sleep            - delay for a specified amount of time
stdbuf           - Run COMMAND, with modified buffering operations for it...
stty             - change and print terminal line settings
tee              - read from standard input and write to standard output ...
test             - check file types and compare values
timeout          - run a command with a time limit
true             - do nothing, successfully
tty              - print the file name of the terminal connected to stand...
yes              - output a string repeatedly until killed

-- util --
date             - print or set the system date and time
factor           - factor numbers

-- static system info --
arch             - print machine hardware name (same as uname -m)
hostid           - print the numeric identifier for the current host
nproc            - print the number of processing units available
uname            - print system information

-- checksums --
b2sum            - compute and check BLAKE2 message digest
cksum            - compute and verify file checksums
md5sum           - compute and check MD5 message digest
md5sum.textutils - compute and check MD5 message digest
sha1sum          - compute and check SHA1 message digest
sha224sum        - compute and check SHA224 message digest
sha256sum        - compute and check SHA256 message digest
sha384sum        - compute and check SHA384 message digest
sha512sum        - compute and check SHA512 message digest
sum              - checksum and count the blocks in a file

-- file content transformation --
base32           - base32 encode/decode data and print to standard output
base64           - base64 encode/decode data and print to standard output
basenc           - Encode/decode data and print to standard output
cat              - concatenate files and print on the standard output
csplit           - split a file into sections determined by context lines
cut              - remove sections from each line of files
dd               - convert and copy a file
expand           - convert tabs to spaces
fmt              - simple optimal text formatter
fold             - wrap each input line to fit in specified width
head             - output the first part of files
join             - join lines of two files on a common field
nl               - number lines of files
od               - dump files in octal and other formats
paste            - merge lines of files
pr               - convert text files for printing
ptx              - produce a permuted index of file contents
shuf             - generate random permutations
sort             - sort lines of text files
split            - split a file into pieces
tac              - concatenate and print files in reverse
tail             - output the last part of files
tr               - translate or delete characters
tsort            - perform topological sort

-- file status operations --
chcon            - change file security context
chgrp            - change group ownership
chmod            - change file mode bits
chown            - change file owner and group
cp               - copy files and directories
install          - copy files and set attributes
link             - call the link function to create a link to a file
ln               - make links between files
mkdir            - make directories
mkfifo           - make FIFOs (named pipes)
mknod            - make block or character special files
mktemp           - create a temporary file or directory
mv               - move (rename) files
rm               - remove files or directories
rmdir            - remove empty directories
shred            - overwrite a file to hide its contents, and optionally ...
stat             - display file or file system status
sync             - Synchronize cached writes to persistent storage
touch            - change file timestamps
truncate         - shrink or extend the size of a file to the specified size
unexpand         - convert spaces to tabs
uniq             - report or omit repeated lines
unlink           - call the unlink function to remove the specified file

-- file content comparisons --
comm             - compare two sorted files line by line
wc               - print newline, word, and byte counts for each file

-- file system status --
df               - report file system space usage
dir              - list directory contents
dircolors        - color setup for ls
du               - estimate file space usage
ls               - list directory contents
vdir             - list directory contents

-- user info --
groups           - print the groups a user is in
id               - print real and effective user and group IDs
logname          - print user's login name
pinky            - lightweight finger
users            - print the user names of users currently logged in to t...
who              - show who is logged on
whoami           - print effective user name