[assign] $variable = expression[assign] $variable := command[assign] $variable [-= | += | *= | /= | %= | x= | .= | ||= | &&= ] expression[assign] $variable [-:= | +:= | *:= | /:= | %:= | x:= | .:= | ||:= | &&:= ] command

Evaluate the expression (= assignment) or command (:= assignment) on the right side of the assignment and store the result in a given variable. Optionally a Perl operator (- subtraction, + addition, * multiplication, / division, % modulo, x repeat string n-times, . concatenation, || logical OR, && logical AND) can precede the assignment, in which case the variable is assigned the result of applying given operator on its previous value and the value of the right side of the assignment.

xsh> $a=chapter/title;
xsh> $b="hallo world";
xsh> $c={ `uname` };
xsh> ls $a;

xsh> $a=5*100 # assign 500 to $a
xsh> $a += 20 # add 20 to $a
xsh> $a = (($a+5) div 10) 

xsh> $a={ 5*100 } 
xsh> $a = { join ';', split //,"hallo" } # assigns "h;a;l;l;o" to $a

xsh> $doc := open "file.xml" # open a document
xsh> $copies := xcopy //foo into //bar # copy elements and store the copies
xsh> $wrappers := wrap "wrapper" $copies # wrap each node from $copies to a new element "wrapper" and store the wrapping elements

variables