How do I check for existing username
45300
How to prevent duplicate usernames when people register?
108790
Wiping out default text when user will enter a username
134993
My name includes space - How do I enter my username when typing command?
40229
How do I check if a variable exists?
136282
What characters should I use or not use in usernames on Linux?
105134
Why isn't the username obfuscated as one of the close-voters once the user is deleted?
5473
Check if user is logged in using JQuery
24316
Usernames vs. Real Names
68314
How can I list all user names and/or home directories?
73204
Renaming user name
71580
Change default username from "Unknown" to "User{number}"
66101
How to check which package created a user?
18745
`who am i` after `su` not showing new user id?
112077
How to check if a value already exists to avoid duplicates?
27134
Is there a way to recover my username in Kali Linux?
4949
Admin login returns 'Sorry, unrecognized username or password.'
102231
Get the HTTP Basic Auth username from javascript?