CODEWITHSUNDEEP
linuxunix
Jean
Jean

Reputation: 22725

How do I lookup username using first and last name

How do I lookup username using first and last name?

Something which does the reverse of getent passwd <username>

finger is taking forever and doesn't display exact match. i.e it displays all logins with same first name or same last name

Upvotes: 0

Views: 189

Answers (1)

Mark Plotnick
Mark Plotnick

Reputation: 10271

For passwd entries like

pulse:x:117:124:PulseAudio daemon,,,:/var/run/pulse:/bin/false

You'd extract the 5th :-delimited field, extract the first ,-delimited field of that, and check if that equals the first name followed by a blank followed by the last name.

firstname=PulseAudio
lastname=daemon
getent passwd | awk -F: -vfirst="$firstname" -vlast="$lastname" '{
  split($5,name,",");
  if(name[1]==(first " " last)) {
    print $1;
  }
}'

If you want the check to be case-insensitive, you can add calls to tolower() on each side of the comparison.

Upvotes: 1

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