Xing's Blog

ping - test if a host is reachable on a network by sending ICMP ECHO_REQUEST to network host.

xxd - create hexadecimal representation(hexdump) for a file. use it to view files in binary or hexadecimal.

ln - create hard link or symbolic(soft) link to files and directories.

free - Display amount of free and used memory in the system.

xargs can be used to process the files return from find command.

tr - Translate characters.

sort - Sort lines of text files.

file - determine file type.

awk is often used to process text files.

du - list the sizes of a folder and any subfolders

sed - stream editor for filtering and transforming text. The most well-known use case for sed is substituting text.

echo - Print given arguments.

df - report file system disk space usage.

lsb_release v2.0 prints certain LSB (Linux Standard Base) and Distribution information.

uname - short for unix name, print system information. Note: use lsb_release for more info about the distribution.