Software Usage Function
vim vim [options] -q [errorfile] Vi IMproved, a programmers text editor
date date [-u|--utc|--universal] [MMDDhhmm[[CC]YY][.ss]] print or set the system date and time
id id [OPTION]... [USERNAME] print real and effective user and group IDs
pkill pkill [options] pattern look up or signal processes based on name and otherattributes
killall killall [-Z,--context pattern] [-e,--exact] [-g,--process-group] [-i,--interactive] [-q,--quiet] [-r,--regexp] [-s,--signal signal] [-u,--user user] [-v,--verbose] [-w,--wait] [-I,--ignore-case] [-V,--version] [--] name ... kill processes by name
pidof pidof [-s] [-c] [-x] [-m] [-o omitpid] [-o omitpid..] program [program..] find the process ID of a running program.
netstat netstat {--route|-r} [address_family_options] [--extend|-e[--extend|-e]] [--verbose|-v] [--numeric|-n] [--numeric-hosts][--numeric-ports] [--numeric-ports] [--continuous|-c] [delay] Print network connections, routing tables, interface statis-tics, masquerade connections, and multicast memberships
yes yes [STRING]... output a string repeatedly until killed
kill kill [-s signal|-p] [--] pid... terminate a process
cksum cksum [FILE]... checksum and count the bytes in a file
talk talk address [terminal] talk to another user
tail tail [OPTION]... [FILE]... output the last part of files
cp cp [OPTION]... -t DIRECTORY SOURCE... copy files and directories
tput tput [-Ttype] longname initialize a terminal or query terminfo database
atq atq [-V] [-q queue] queue, examine or delete jobs for later execu-tion
wall wall [-n] [ message ] Write a message to all users
chown chown [OPTION]... [OWNER][:[GROUP]] FILE... change file owner and group
file file [-bchikLNnprsvz0] [--apple] [--mime-encoding] [--mime-type] [-e testname] [-F separator] [-f namefile] [-m magicfiles] file ... determine file type
info info [OPTION]... [MENU-ITEM...] read Info documents
expr expr EXPRESSION evaluate expressions