Terminal Emulator is a command line interface on iOS. Run Linux commands in sandbox and find command documents. Great way to start your Linux-like shell command journey.

Commands
awk - text pattern scanning and processing.
bc - implement an arbitrary precision calculator.
cat - concatenate files and print on the standard output.
cd - change the working directory.
chflags - he chflags utility modifies the file flags of the listed files as specified by the flags operation.
chgrp - change group ownership.
chmod - change file mode bits.
clear - clear the terminal screen.
compress — compress data by using adaptive Lempel-Ziv coding.
cp - copy files and directories.
curl - curl is a tool to transfer data from or to a server.
date - print or set the system date and time.
dc - desk calculator.
df - report file system disk space usage.
diff - compare files line by line.
dig - DNS lookup utility.
du - estimate file space usage.
echo - display a line of text.
env - run a program in a modified environment.
exit - exit the current tab.
grep - grep searches lines containing a match to the given PATTERN.
gzip, gunzip - compression/decompression tool using Lempel-Ziv.
head - output the first part of files.
host - DNS lookup utility.
ifconfig - ifconfig displays the status of the currently active interfaces.
link - make a new name for a file.
ln - make links between files.
ls - list directory contents.
lstat - retrieve information about the file pointed to by pathname.
md5 - calculate a message-digest checksum.
mkdir - make directories.
mv - move or rename files.
nc - arbitrary TCP and UDP connections and listens.
nslookup - query Internet name servers interactively.
ping - send ICMP ECHO_REQUEST to network hosts.
printenv - print all or part of environment.
pwd - print name of current/working directory.
readlink - print resolved symbolic links or canonical file names.
rlogin - remote login.
rm - remove files or directories.
rmdir - delete a directory.
say - convert text to audible speech.
sed - stream editor for filtering and transforming text.
setenv - change or add an environment variable.
sftp - OpenSSH secure file transfer.
sh - shell, the standard command language interpreter.
sort - sort lines of text files.
ssh-keygen - OpenSSH authentication key utility.
ssh - OpenSSH remote login client.
sum - checksum and count the blocks in a file.
tail - output the last part of files.
tar - store multiple files in an archive, and to manipulate such archives.
tee - read from standard input and write to standard output and files.
telnet - user interface to the TELNET protocol.
touch - change file timestamps.
tr - translate or delete characters.
uname - get termianl emulator basic information.
uncompress - expand compressed data.
uniq - report or omit repeated lines.
unlink - delete a name and possibly the file it refers to.
unsetenv - remove an environment variable.
uptime - Tell how long the system has been running.
wc - print newline, word, and byte counts for each file.
whois - Internet domain name and network number directory service.
xargs - build and execute command lines from standard input.