Miscellaneous Unix Commands

type two commands at a time	cmd1 ; cmd2
spell check a file	cat filename | spell
Reset terminal: if mistakenly viewed a binary file with cat	stty sane
append results of a command onto an existing file	cmd>>file.ext
write results of a command to a file	cmd>file.ext
logout	[Ctrl]+D or exit
ftp file to host1 from host2	ftp host1
search files for a string -# = display '#' lines on both sides -c = display a count -v = display non-matching lines -i = ignore case	grep string filename

System Information

list current shell	echo $SHELL
show your group	grep yourid /etc/passwd
show all groups	more /etc/group
system information	uname -a
who's logged in	finger

Grep

match any character	.	grep l..n filename	finds 'lynn' or 'loan'
match only if at the beginning of a line	^	grep ^day filename	finds 'day into night'but not 'Some day'
match only if at the end of the line	$	grep day$ filename	finds 'One fine day'but not 'Monday is good'
search for '.' or '^' or '$' in a file	\	grep \* filename	finds '*****1.05'
search for a set of names	[]	grep [dog,dil]bert filename	finds 'dogbert' and 'dilbert'
find all lines that start with an alphabetic character in upper or lower case	^[]	grep ^[A-Z,a-z] filename