Description: Simple shell interpreter to achieve, to achieve the pipes, redirection, you can perform a small number of internal commands can run in the background, clear notes.
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File list (Check if you may need any files):
lexForShell\lex.yy.c
...........\lexForShell.l
...........\makefile
...........\myLex
...........\project1报告.docx
...........\tags
lexForShell