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Perl in a Nutshell

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Function Reference
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Retrieves the next line from the /etc/passwd file (or its equivalent coming from some server somewhere). Returns null at the end of the file. The return value in list context is:

Some machines may use the quota and comment fields for other purposes, but the remaining fields will always be the same. To set up a hash for translating login names to uids, do this:
while (($name, $passwd, $uid) = getpwent) {
    $uid{$name} = $uid;
In scalar context, getpwent returns only the username.

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