Write a shell script that displays the date of the day to find if a given user is working in the system. If he is in the

plasma

Write a shell script that displays the date of the day to find if a given user is working in the system. If he is in the system, send him a greeting

keeraw

date '+% Y% m% d
if
  who | grep "^ $ 1"
then
  write $ 1 <<!
hello
!
fi

godxuli

The first line upstairs is missing a single quote, ha ha

疾风骑士

[code=C/C++]
    +1 #FileName:Hello.sh
    +2 #! /dev/sh -x
    +3 date'+%Y%m%d'
    +4 echo "Please enter the access user Default: NULL"
    +5 read Username
    +6 w|grep ${Username}&&write ${Username}
    +7 hello
    +8 ![/code]

littledick

[code=Python]
#!/bin/bash
IS_USER_FOUND=0
date +%F

if who | grep "^$1 "; then
IS_USER_FOUND=1;
    write $1 <<Limitstring
hello
Limitstring
fi

if [$IS_USER_FOUND -eq "0"]
then
echo "user $1 not found."
fi
[/code]