tr












1, grammar,









2. List of options






























































































































3, the instance,






cat 1.c






Tr -d hello < 1.c // Prints the contents of 1.c to tr, then deletes the characters that appear









tr -s a-z A-Z < 1.c


      HELO WORLD, I AM DAVID. I LOVE LINUX, LOVE CODE.



Made a Linux learning platform, currently out a prototype, you can refer to use links: pan.baidu.com/s/1GOLVU2Cb… Password: n7bk