linux-echo-printf

Apr 4, 2020

 linux-shell  cat  tac  echo  printf

printf

printf "%-5s %-5s %-5s\n" No Name Score
printf "%-5s %-5s %-5s\n" 1  John 120

echo

# 彩色输出
echo -n -e "\e[1;32mUsage: $0 start|stop\e[0m"