Dell Acceleration Appliances for Databases Guide de l'utilisateur télécharger pdf (Page 18)

Piping Output

You can also pipe the text output of one command into another, using the piping symbol (“|”).

For example,

config:config | more will page through the configuration one screen at a time.

A convenient pipe command is

grep, which allows searching for values. For example:

luns -dt | grep some_volume

Filtering Output

The CLI enables a number of useful forms of filtering. Here are some sample expressions that can

guide your use:

• Get port objects and store them:

> p=(ports -o) // grab port objects and store

• Return a list of the modes of the ports:

> each $p {$1 mode} // get mode property

• Return a list of booleans indicating which ports are not management ports:

> each $p {$1 . mode . neq Management}

• Filter the ports, returning the ones that are management ports:

> each $p -w { $1 . mode . eq Management}

• Filter the ports, returning a list of the IDs of the ones that are management ports:

> each $p -w { $1 . mode . eq Management} {$1 id}

Using Closures and Subcommands

A closure is created by surrounding statement(s) with braces. This forms a function, which can be

used directly or assigned to a variable. Within a closure you can refer to any positional argument

by $n, where n is the number of the argument, starting with 1. $args refers to all the arguments

passed to the function.

admin@url> each (volumes) {volume:get $1}

vol1

vol2

...

You can use closures to create functions, by assigning the closure to a variable name. Once

created you can refer to the closure value by using the $ symbol, or can invoke the closure by

referring to the variable without the $ sign.

1 2 ... 13 14 15 16 17 18 19 20 21 22 23 ... 155 156

Pas de commentaire

Dell Acceleration Appliances for Databases Guide de l'utilisateur Page 18