It's under your control.

렉스 파일 : test.l 데이터 파일 : test.dat yum install -y flex yum install -y bison [root@localhost ~]$ lex-bash: lex: command not found [root@localhost ~]# yum install -y flex ...... [root@localhost ~]# lex test.l [root@localhost ~]$ ll total 8 -rw-rw-r--. 1 root root 43 Jan 18 12:52 test.da t-rw-rw-r--. 1 root root 1084 Jan 18 12:58 test.l [root@localhost ~]$ lex test.l [root@localhost ~]$ ll total 56 -..