uniq 和sort使用

https://blog.csdn.net/jesseen/article/details/8005056?ops_request_misc=%257B%2522request%255Fid%2522%253A%2522161898869216780255223873%2522%252C%2522scm%2522%253A%252220140713.130102334..%2522%257D&request_id=161898869216780255223873&biz_id=0&utm_medium=distribute.pc_search_result.none-task-blog-2_allsobaiduend~default-1-8005056.first_rank_v2_pc_rank_v29&utm_term=uniq

https://blog.csdn.net/wade3015/article/details/92573738?ops_request_misc=%257B%2522request%255Fid%2522%253A%2522161900139716780255277315%2522%252C%2522scm%2522%253A%252220140713.130102334..%2522%257D&request_id=161900139716780255277315&biz_id=0&utm_medium=distribute.pc_search_result.none-task-blog-2_allsobaiduend~default-1-92573738.first_rank_v2_pc_rank_v29&utm_term=sort+linux