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echo \(output\) \&\| \> \< \" \' \*


# variable substitution:
$filename.ext
$filename_ext
${filename}_ext
text${array[$subscript]}.text
text${array["string"]}.text
${!prefix*}
${!redir}
short are $_, $$, $?, ${@}, etc.
${variable//a/d}
${1:-default}


# expression subst:
$(( cd << ed + 1 ))


# command subst:
$(ls -l)
echo `cat myfile`


# file subst:
$(<$filename)
$(</path/to/myfile)

# process subst:
sort <(show_labels) | sed 's/a/bg' > my_file.txt 2>&1


# All substitutions also work in strings:
"subst ${in}side string"  'not $inside this ofcourse'
"The result is $(( $a + $b )). Thanks!"
"Your homedir contains `ls $HOME |wc -l` files."


# Escapes in strings:
p="String \` with \$ escapes \" ";


# keywords are black, builtins dark purple and common commands lighter purple
set
exit
login


# Other colorings:
error() {
	cat /usr/bin/lesspipe.sh
	runscript >& redir.bak
	exec 3>&4
}


# do - done make code blocks
while [ $p -lt $q ] 
do
	chown 0644 $file.$p
done


# braces as well
run_prog | sort -u |
{
	echo Header
	while read a b d
	do
		echo $a/$b/$c
	done
	echo Footer
}


# Any constructions can be nested:
echo "A long string with $(
	if [ $count -gt 100 ] ; then
		echo "much"
	else
		echo "not much"
	fi ) substitutions." ;


# Even the case construct is correctly folded:
test -f blaat &&
(	do_something
	case $p in
		*bak)
			do_bak $p
			;;
		*)
			dont_bak $p
			;;
	esac
) # despite the extra parentheses in the case construction.


# variable assignments:
DIR=/dev
p=`ls`
LC_ALL="nl" dcop 'kate*'
_VAR=val
ARR=(this is an array)
ARR2=([this]=too [and]="this too")
usage="$0 -- version $VERSION
Multiple lines of output
can be possible."


# Some commands expect variable names, these are colored correctly:
export PATH=/my/bin:$PATH BLAAT
export A B D
local p=3  x  y='\'
read x y z <<< $hallo
unset B
declare -a VAR1 VAR2 && exit
declare less a && b 

# options are recoqnized: