Thread: Regex for valid First and Last name

i have regex i'd implement , believe should working , have tested on various websites have regex testers says name invalid.

#!/bin/bash -x

echo enter users first , last name.
read name

code:

code:

if [[ "$name" =~ "^((?:[a-z](?:('|(?:[a-z]{1,3}))[a-z])?[a-z]+)|(?:[a-z]\.))(?:([ -])((?:[a-z](?:('|(?:[a-z]{1,3}))[a-z])?[a-z]+)|(?:[a-z]\.)))?$" ]]

then
echo name valid.
else
echo name invalid.
exit 1
fi


if enter jon doe should valid.

posted woodson2

i have regex i'd implement , believe should working , have tested on various websites have regex testers says name invalid.

#!/bin/bash -x

echo enter users first , last name.
read name

code:

code:

if [[ "$name" =~ "^((?:[a-z](?:('|(?:[a-z]{1,3}))[a-z])?[a-z]+)|(?:[a-z]\.))(?:([ -])((?:[a-z](?:('|(?:[a-z]{1,3}))[a-z])?[a-z]+)|(?:[a-z]\.)))?$" ]]

then
echo name valid.
else
echo name invalid.
exit 1
fi


if enter jon doe should valid.

i'm not expert on regexps bash supports, , didn't try understand long one, went other direction:

code:

#!/bin/bash -x    name="john doe"    if [[ "$name" =~ "^john doe" ]]   echo name valid.  else  echo name invalid.  exit 1  fi

not works, suggest put regexp piece piece, working pieces. can't why ^ doesn't work; mentioned in regex(7) man page.

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