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Homework and Emergencies Homework & Coursework Questions Create script to add user and create directory Post 302509430 by m1xram on Wednesday 30th of March 2011 08:20:07 PM
Old 03-30-2011
Code:
egrep -q "^$username:" /etc/passwd
if [ $? -eq 0 ]; then
    echo "found"
fi

I don't understand your question about the carat character. '^' can be inserted like any other character. In VI you hit 'i' to insert and then <shift 6> on a US keyboard.

I added ':' character to the end of the match to make sure it is an exact match. For instance "^Joe" can match "Joe", "Joe2", or "Joe_38933". "^Joe:" will only match user "Joe".
This User Gave Thanks to m1xram For This Post:
 

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IMAP_RFC822_PARSE_ADRLIST(3)						 1					      IMAP_RFC822_PARSE_ADRLIST(3)

imap_rfc822_parse_adrlist - Parses an address string

SYNOPSIS
array imap_rfc822_parse_adrlist (string $address, string $default_host) DESCRIPTION
Parses the address string as defined in RFC2822 and for each address. PARAMETERS
o $address - A string containing addresses o $default_host - The default host name RETURN VALUES
Returns an array of objects. The objects properties are: o mailbox - the mailbox name (username) o host - the host name o personal - the personal name o adl - at domain source route EXAMPLES
Example #1 imap_rfc822_parse_adrlist(3) example <?php $address_string = "Joe Doe <doe@example.com>, postmaster@example.com, root"; $address_array = imap_rfc822_parse_adrlist($address_string, "example.com"); if (!is_array($address_array) || count($address_array) < 1) { die("something is wrong "); } foreach ($address_array as $id => $val) { echo "# $id "; echo " mailbox : " . $val->mailbox . " "; echo " host : " . $val->host . " "; echo " personal: " . $val->personal . " "; echo " adl : " . $val->adl . " "; } ?> The above example will output: # 0 mailbox : doe host : example.com personal: Joe Doe adl : # 1 mailbox : postmaster host : example.com personal: adl : # 2 mailbox : root host : example.com personal: adl : SEE ALSO
imap_rfc822_parse_headers(3). PHP Documentation Group IMAP_RFC822_PARSE_ADRLIST(3)
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