tail

Operator

  tail — copy trailing values of input sequence

Synopsis

tail [ <const-expr> ]

Description

The tail operator copies the last N from its input to its output and ends the sequence thereafter. N is given by <const-expr>, a compile-time constant expression that evaluates to a positive integer. If <const-expr> is not provided, the value of N defaults to 1.

Examples

Grab last two values of arbitrary sequence

echo '1 "foo" [1,2,3]' | super -z -c 'tail 2' -

=>

"foo"
[1,2,3]

Grab last two values of arbitrary sequence, using a different representation of two

echo '1 "foo" [1,2,3]' | super -z -c 'tail 1+1' -

=>

"foo"
[1,2,3]

Grab the last record of a record sequence

echo '{a:"hello"}{b:"world"}' | super -z -c tail -

=>

{b:"world"}