User`s guide

Creating and Removing dbx Aliases

The “p” alias takes four arguments and prints them surrounded by vertical

bars (|). For example:

(dbx) p(1,2,3,4)

|1|2|3|4|

(dbx) p( first, second, 3rd,4)

| first| second| 3rd|4|

In the previous example, dbx retains any spaces that you enter when calling

an alias.

You can also omit arguments when calling an alias as long as you include the

commas as argument separators in the alias call:

(dbx) p(a,,b,c)

|a||b|c|

(dbx) p(,first missing, preceding space,)

||first missing| preceding space||

(dbx) delete

delete

Removing Command Aliases

The unalias command removes the alias you provide as an argument. For

example, to remove the “pa” alias deﬁned in the previous section, enter:

(dbx) unalias pa

You can remove any of the predeﬁned dbx aliases; however, these aliases are

restored the next time you start dbx.

Alias Example

An easy way to follow linked lists is to use aliases and casts. This example

shows how to construct an alias that follows a simple linked list with

members deﬁned by the following structure:

struct list { struct list *next; int value; };

In this example, a dbx variable called $p is used as a pointer to a member of

the linked list. You can deﬁne an alias called “foll” to print the contents of the

list member to which $p currently points and then advance to the next list