Text processing and scripting command for UNIX

Text Processing and Scripting Commands

Command	Description
awk	The awk general-purpose text processing language
basename	Strips extensions and directories from filenames
cat	Displays and concatenates files
cmp	Compares binary files
cut	Extracts columns of lines
diff	Compares text files
dirname	Extracts the directory from a filename
echo	Prints text
ed	A classic line-based text editor
egrep	Extended grep
ex	A newer line-based text editor
expr	Evaluates a mathematical expression
false	Returns a nonzero exit code
fmt	Breaks long lines and reformats text
grep	Searches for lines matching a regular expression
groff	A multi-purpose typesetting utility
head	Displays the first lines of a file
ispell	A spelling checker
less	Displays a text file
more	Displays a text file
nroff	Formats roff documents for text display
patch	Incorporates changes into files; the opposite of diff
perl	A general-purpose scripting language
sed	A stream editor
sort	Sorts lines in a file
split	Chops a file into pieces
tail	Displays the last lines of a file
tee	Duplicates a file stream
test	([) Checks a condition
tr	Translates (or substitutes) characters
true	Returns an exit code of 0 (true)
uniq	Removes duplicate adjacent lines
vi	A visual full-screen editor
wc	Counts words, lines, and characters in a file
xargs	Executes a command repeatedly with arguments from the input stream