How to determine whether a user exists in Linux

Linux method to determine whether a user exists: 1. Save "read -p "please input a username:" username..." as test.sh; 2. Run "sh test.sh" .

The operating environment of this article: linux5.9.8 system, Dell G3 computer.

How to determine whether a user exists in Linux?

linux Determine whether a user exists:

#!/bin/bash

read -p "please input a username:" username

if id -u $username >/dev/null 2>&1; then
        echo "user exists"
else
        echo "user does not exist"
fi

Save the above memory as test.sh, and then run sh test.sh

Recommended learning: "linux video tutorial"

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