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Man Pages


Manual Reference Pages  -  APPLY (1)

NAME

apply - apply a command to a set of arguments

CONTENTS

Synopsis
Description
Environment
Files
Examples
History
Authors
Bugs

SYNOPSIS

apply [-a c] [-d] [-#] command argument ...

DESCRIPTION

The apply utility runs the named command on each argument argument in turn.

Character sequences of the form "%d" in command, where 'd' is a digit from 1 to 9, are replaced by the d 'th following unused argument. In this case, the largest digit number of arguments are discarded for each execution of command.

The options are as follows:
-# Normally arguments are taken singly; the optional number -# specifies the number of arguments to be passed to command. If the number is zero, command is run, without arguments, once for each argument.

If any sequences of "%d" occur in command, the -# option is ignored.

-a c The use of the character '%' as a magic character may be changed with the -a option.
-d Display the commands that would have been executed, but do not actually execute them.

ENVIRONMENT

The following environment variable affects the execution of apply:
SHELL Pathname of shell to use. If this variable is not defined, the Bourne shell is used.

FILES

/bin/sh
  default shell

EXAMPLES

apply echo *
  is similar to ls(1);
apply -2 cmp a1 b1 a2 b2 a3 b3
  compares the ‘a’ files to the ‘b’ files;
apply -0 who 1 2 3 4 5
  runs who(1) 5 times; and
apply 'ln %1 /usr/joe' *
  links all files in the current directory to the directory /usr/joe.

HISTORY

The apply command appeared in BSD 4.2 .

AUTHORS


.An Rob Pike

BUGS

Shell metacharacters in command may have bizarre effects; it is best to enclose complicated commands in single quotes (’’).

The apply utility does not recognize multibyte characters.

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