命令介绍cal命令用于显示当前日历或指定日期的日历。语法cal[month][year][-mmonth][-yyear][-h][-3][-1][-Anum][-Bnum][-dYYYY-MM][-j][-N]选项说明-l#显示单月输出-3#显示接下来三个月的日历-s#使用星期日作为该月的第一天-m#使用星期一作为该月的第一天-j#Display"julian"date-y#显示当年日历应用示例[root@centos7~]#calJanuary2021SuMoTuWeThFrSa1234567891011121314151617202122232425262728293031[root@centeros7~]#Cal-S2021年1月SuMoTuWeThFRSa12345910111314151611222223242223242528627293031[root@CentOS7~]#Cal-mJanuary2021MOTUWeThFRSASU134561011121314161712223242526282828282828282828293031[root@CentOS7~]#Cal-3December2020January2021February2021SuMoTuWeThFRSASuMoTuWeThFRSAMOTUWeThFRSa1234512334566789101112345678978910111213131415161718191011121313141516161616171617181920202122232324252617181920212222232123212222232323242526272728293031242626272829302831[root@centos7?]＃cal-20211月1月2月3月，我们thfrsasasasasasasasasasasasasasasasasasasasasasaafrsa121234561234563456789789101112137891011121310111213111213131415161516151617181920201415161718192017181920212223212223232426272122232324262724262724262728293028282928293031314月5月6月6月sumothsumothfrsasasasasasasasasasasasasasasasasasasasasasasasasasasasasasasasasasasasasasasasasasumotuWeThFrSaSuMoTuWeFreeMp3下载THFRSA12345456789102345678910111211121317910111213141516171819181920212224161720819192223242526252829302324252728293031JulyAugustSeptemberSeptSASUMATUWETHFRSASUMUWETHFRSA1234567124567891011121314567891011111213141617171717181920211213131415181819202122232324262819202122212223232323242529292929292929303031262727282930OctoberNovemberDecemberSuMotuwethfrSaSuMotuwefrataSuMotuwefrata12123456123456789910121356101110111121314151617181920121314151516171817181922222122232426272222222326272828282930262829303131每天学一个linux命令(54):weverydaytolearneverydayaLinuxcommand(55):id学一个Linux命令每天(56)：su/sudo
