sort
sort是一种非常简单而且非常有用的命令，它将重新排列文本文件里面的行，默认情况下的排序规则：
- 以数字开头的行将出现在以字母开头的行之前。
- 以字母表中较早出现的字母开头的行将出现在以字母表后面出现的字母开头的行之前。
- 以小写字母开头的行将出现在以大写字母开头的行之前。
语法
sort [option] filename or stdin
常用option参数：
-f：忽略大小写的差异，例如 A 与 a 视为编码相同； -b：忽略最前面的空格符部分； -M：以月份的名字来排序，例如 JAN, DEC 等等的排序方法； -n：使用『纯数字』进行排序(默认是以文字型态来排序的)； -r：反向排序； -u：就是 uniq ，相同的数据中，仅出现一行代表；
uniq
uniq可以取出文件里面的重复的行， 但是这些重复的行必须恩斯相邻的所以在进行去重之前必须对文件进行一个sort排序，以保证重复的行相邻。
语法以及常用参数
uniq [option] -i ：忽略大小写字符的不同； -c ：进行计数 -u ：只显示唯一的行
cut
cut可以从文本文件中提取出某一列
语法以及常用参数
cut -d"分隔符" -f"列数" filename -d ：后面接分隔字符。与 -f 一起使用； -f ：依据 -d 的分隔字符将一段信息分割成为数段，用 -f 取出第几段的意思；
sed
sed 可以对数据进行搜索和替换
语法
sed ‘s/要被取代的字串/新的字串/g‘
例：把"hello word"里面的每一个小写字母替换成小写字母a
echo "hello word" | sed "s/[a-z]/a/g" aaaaa aaaa
wc(words count)
统计文件里的行数，单词数，字符数
语法以及常用参数
wc [option] -l ：仅列出行； -w ：仅列出多少字(英文单字)； -m ：多少字符；
例：
wc classes.txt 441 3786 19271 classes.txt
测试用例classes.txt
BINF3010 1UGA LAB Tue 16-18 BongoK17G7 21 23 BINF6111 1UGA SEM Wed 16-18 BUS 115 0 40 BINF9010 1PGA LAB Tue 16-18 BongoK17G7 9 9 COMP1000 M11A LAB Mon 11-13 FluteME303 25 25 COMP1000 M11B LAB Mon 11-13 BongoK17G7 24 24 COMP1000 M13A LAB Mon 13-15 BongoK17G7 24 24 COMP1000 M13B LAB Mon 13-15 FluteME303 25 25 COMP1000 M15A LAB Mon 15-17 Oboe ME304 25 25 COMP1000 T09A LAB Tue 09-11 BongoK17G7 24 24 COMP1000 T09B LAB Tue 09-11 TablaK17G7 26 26 COMP1000 T13A LAB Tue 13-15 BongoK17G7 24 24 COMP1511 F09A TLB Fri 09-10 Quad 1045 24 24 COMP1511 F09B TLB Fri 09-10 Quad G032 25 25 COMP1511 F11A TLB Fri 11-12 Quad G026 24 24 COMP1511 F11B TLB Fri 11-12 Quad 1046 25 25 COMP1511 F13A TLB Fri 13-14 Newt 306 25 25 COMP1511 F15A TLB Fri 15-16 Quad 1045 24 24 COMP1511 H09A TLB Thu 09-10 Webst 252 24 24 COMP1511 H09B TLB Thu 09-10 Quad G054 24 24 COMP1511 H11A TLB Thu 11-12 Quad G044 24 24 COMP1511 H11B TLB Thu 11-12 Quad G031 25 25 COMP1511 H13A TLB Thu 13-14 Webst 302 24 24 COMP1511 H13B TLB Thu 13-14 Webst 251 25 25 COMP1511 H17A TLB Thu 17-18 Quad G054 24 24 COMP1511 T16A TLB Tue 16-17 Quad G054 24 24 COMP1511 T16B TLB Tue 16-17 Webst 302 24 24 COMP1511 T18A TLB Tue 18-19 OMB151 24 24 COMP1511 W09A TLB Wed 09-10 Quad 1046 24 24 COMP1511 W09B TLB Wed 09-10 Quad G027 25 25 COMP1511 W11A TLB Wed 11-12 Newt 306 24 24 COMP1511 W11B TLB Wed 11-12 ElecEngG04 25 25 COMP1511 W13A TLB Wed 13-14 Webst 251 24 24 COMP1511 W13B TLB Wed 13-14 Webst 252 24 24 COMP1511 W18A TLB Wed 18-19 BUS 219 25 25 COMP1511 W18B TLB Wed 18-19 BUS 118 24 24 COMP1521 F13A TLB Fri 13-14 Mat 313 24 24 COMP1521 F13B TLB Fri 13-14 Webst 250 25 25 COMP1521 F13C TLB Fri 13-14 Law 101 25 25 COMP1521 H13A TLB Thu 13-14 Gold G03 25 25 COMP1521 H13B TLB Thu 13-14 Law 301 25 25 COMP1521 H15A TLB Thu 15-16 Webst 250 25 25 COMP1521 H15B TLB Thu 15-16 ElecEngG10 24 25 COMP1521 M09A TLB Mon 09-10 Gold G01 36 36 COMP1521 M09B TLB Mon 09-10 Webst 302 34 34 COMP1521 M11A TLB Mon 11-12 Gold G01 36 36 COMP1521 M11B TLB Mon 11-12 Webst 302 34 34 COMP1521 M16A TLB Mon 16-17 Law 301 25 25 COMP1521 M16B TLB Mon 16-17 ElecEngG09 24 25 COMP1521 M16C TLB Mon 16-17 ElecEngG10 25 25 COMP1521 M18A TLB Mon 18-19 Quad 1045 20 25 COMP1521 M18B TLB Mon 18-19 Gold G09 20 24 COMP1521 T09A TLB Tue 09-10 Webst 302 35 36 COMP1521 T09B TLB Tue 09-10 Webst 251 34 34 COMP1521 T11A TLB Tue 11-12 Quad 1045 25 25 COMP1521 T11B TLB Tue 11-12 Quad 1048 25 25 COMP1521 T14A TLB Tue 14-15 Law 302 25 25 COMP1521 T14B TLB Tue 14-15 Quad 1046 24 24 COMP1521 T16A TLB Tue 16-17 AinswthG01 25 25 COMP1521 T16B TLB Tue 16-17 Ainswth201 25 25 COMP1521 T18A TLB Tue 18-19 Law 276 30 36 COMP1521 W11A TLB Wed 11-12 AinswthG01 25 25 COMP1521 W11B TLB Wed 11-12 Ainswth201 25 25 COMP1521 W13A TLB Wed 13-14 ElecEngG10 25 25 COMP1521 W13B TLB Wed 13-14 Law 388 25 25 COMP1521 W18A TLB Wed 18-19 Gold G09 24 25 COMP1521 W18B TLB Wed 18-19 BUS 114 24 25 COMP2041 F09A TLB Fri 09-10 ElecEngG09 21 34 COMP2041 F09B TLB Fri 09-10 Ainswth201 21 34 COMP2041 F11A TLB Fri 11-12 Law 302 24 34 COMP2041 F11B TLB Fri 11-12 Law 301 28 34 COMP2041 F13A TLB Fri 13-14 ElecEngG10 29 34 COMP2041 F13B TLB Fri 13-14 Quad G044 32 34 COMP2041 H09A TLB Thu 09-10 ElecEngG03 20 34 COMP2041 H09B TLB Thu 09-10 Quad G045 20 34 COMP2041 H11A TLB Thu 11-12 ElecEngG09 27 34 COMP2041 H11B TLB Thu 11-12 Webst 250 14 34 COMP2041 H13A TLB Thu 13-14 AinswthG01 28 34 COMP2041 H13B TLB Thu 13-14 ElecEngG04 32 34 COMP2041 T15A TLB Tue 15-16 AinswthG01 14 34 COMP2041 W09A TLB Wed 09-10 Ainswth201 19 34 COMP2041 W09B TLB Wed 09-10 Webst 302 9 34 COMP2041 W11A TLB Wed 11-12 CivEng G6 24 34 COMP2041 W11B TLB Wed 11-12 Webst 302 20 34 COMP2041 W13A TLB Wed 13-14 ElecEngG03 31 34 COMP2041 W15A TLB Wed 15-16 Quad G031 26 34 COMP2041 W17A TLB Wed 17-18 Ainswth201 25 34 COMP2121 F09A LAB Fri 09-11 ElecEng225 12 30 COMP2121 F11A LAB Fri 11-13 ElecEng225 29 30 COMP2121 F13A LAB Fri 13-15 ElecEng225 28 30 COMP2121 F15A LAB Fri 15-17 ElecEng225 0 30 COMP2121 H10A LAB Thu 10-12 ElecEng225 29 30 COMP2121 H14A LAB Thu 14-16 ElecEng225 30 30 COMP2121 H16A LAB Thu 16-18 ElecEng225 29 30 COMP2511 F09A TLB Fri 09-10 BUS 118 21 24 COMP2511 F09B TLB Fri 09-10 BUS 114 22 26 COMP2511 F11A TLB Fri 11-12 Quad G040 23 24 COMP2511 F11B TLB Fri 11-12 Webst 302 24 26 COMP2511 F13A TLB Fri 13-14 Law 163 19 24 COMP2511 F13B TLB Fri 13-14 Law 201 20 26 COMP2511 H11A TLB Thu 11-12 Col LG02 24 24 COMP2511 H11B TLB Thu 11-12 Gold G05 22 24 COMP2511 H13A TLB Thu 13-14 Law 275 24 24 COMP2511 H13B TLB Thu 13-14 Law 202 25 25 COMP2511 H15A TLB Thu 15-16 Sqhouse205 24 24 COMP2511 H15B TLB Thu 15-16 Sqhouse215 24 24 COMP2511 T18A TLB Tue 18-19 Quad G046 24 24 COMP2511 W09A TLB Wed 09-10 BUS 114 21 24 COMP2511 W09B TLB Wed 09-10 ElecEngG10 24 26 COMP2511 W11A TLB Wed 11-12 SEB B24 24 24 COMP2511 W11B TLB Wed 11-12 Law 301 26 26 COMP2511 W13A TLB Wed 13-14 Law 303 24 24 COMP2511 W13B TLB Wed 13-14 Col LG02 26 26 COMP2511 W15A TLB Wed 15-16 Quad 1047 24 24 COMP2511 W15B TLB Wed 15-16 RedC M010 25 26 COMP2521 F09A TLB Fri 09-10 Webst 252 24 24 COMP2521 F09B TLB Fri 09-10 Ainswth101 24 25 COMP2521 F11A TLB Fri 11-12 Quad 1047 25 25 COMP2521 F11B TLB Fri 11-12 Quad 1048 24 25 COMP2521 H09A TLB Thu 09-10 Quad 1046 25 25 COMP2521 H09B TLB Thu 09-10 Quad 1047 24 25 COMP2521 H15A TLB Thu 15-16 Newt 307 23 24 COMP2521 H15B TLB Thu 15-16 Sqhouse214 24 24 COMP2521 M11A TLB Mon 11-12 Quad G032 24 24 COMP2521 M13A TLB Mon 13-14 Webst 250 24 24 COMP2521 M15A TLB Mon 15-16 Newt 307 0 24 COMP2521 T09A TLB Tue 09-10 Newt 307 23 24 COMP2521 T09B TLB Tue 09-10 Gold G05 23 24 COMP2521 T11A TLB Tue 11-12 Newt 307 23 24 COMP2521 T11B TLB Tue 11-12 RedC 4037 25 25 COMP2521 T13A TLB Tue 13-14 Quad G053 36 36 COMP2521 T13B TLB Tue 13-14 Webst 250 34 34 COMP2521 W09A TLB Wed 09-10 RedC 3037 20 25 COMP2521 W09B TLB Wed 09-10 Quad G052 24 25 COMP3151 H12A TUT Thu 12-14 Quad G045 18 20 COMP3151 H14A TUT Thu 14-16 Quad 1042 8 20 COMP3151 H16A TUT Thu 16-18 Quad 1042 6 20 COMP3331 F09A LAB Fri 09-11 Drum K17B8 14 24 COMP3331 H10A LAB Thu 10-12 BongoK17G7 8 24 COMP3331 H10B LAB Thu 10-12 TablaK17G7 11 24 COMP3331 H12A LAB Thu 12-14 FluteME303 5 24 COMP3331 H12B LAB Thu 12-14 Oboe ME304 0 24 COMP3331 H16A LAB Thu 16-18 StringsME3 3 24 COMP3331 H16B LAB Thu 16-18 BrassME305 1 24 COMP3331 M18A LAB Mon 18-20 BongoK17G7 14 24 COMP3331 M18B LAB Mon 18-20 TablaK17G7 16 24 COMP3331 T10A LAB Tue 10-12 FluteME303 14 24 COMP3331 T10B LAB Tue 10-12 Oboe ME304 14 25 COMP3331 T12A LAB Tue 12-14 StringsME3 22 24 COMP3331 T12B LAB Tue 12-14 BrassME305 21 34 COMP3331 T14A LAB Tue 14-16 SitarME306 7 24 COMP3331 T14B LAB Tue 14-16 KoraME307 8 24 COMP3331 W16A LAB Wed 16-18 SitarME306 2 24 COMP3331 W16B LAB Wed 16-18 KoraME307 7 24 COMP3331 W18A LAB Wed 18-20 BongoK17G7 4 24 COMP3331 W18B LAB Wed 18-20 TablaK17G7 9 26 COMP3411 H14A TUT Thu 14-15 Quad 1049 7 20 COMP3411 H15A TUT Thu 15-16 Quad 1049 4 20 COMP3411 H16A TUT Thu 16-17 Quad 1049 4 20 COMP3411 M16A TUT Mon 16-17 Quad 1043 6 25 COMP3411 M17A TUT Mon 17-18 Quad 1043 3 25 COMP3411 T12A TUT Tue 12-13 Quad 1042 13 22 COMP3411 T13A TUT Tue 13-14 Quad 1042 10 22 COMP3411 T14A TUT Tue 14-15 Quad 1042 0 22 COMP3411 T15A TUT Tue 15-16 Quad 1042 10 22 COMP3411 T16A TUT Tue 16-17 Quad 1042 5 22 COMP3411 W12A TUT Wed 12-13 Quad 1042 10 22 COMP3411 W13A TUT Wed 13-14 Quad 1042 0 22 COMP3411 W14A TUT Wed 14-15 Quad 1042 14 22 COMP3411 W15A TUT Wed 15-16 Quad 1042 4 22 COMP3411 W16A TUT Wed 16-17 Quad 1042 4 22 COMP3421 M14A TUT Mon 14-15 Gold G05 18 24 COMP3421 M15A TUT Mon 15-16 Gold G05 0 24 COMP3421 M16A TUT Mon 16-17 Gold G01 15 30 COMP3421 M17A TUT Mon 17-18 Gold G01 0 30 COMP3421 M18A TUT Mon 18-19 Gold G01 0 30 COMP3421 M19A TUT Mon 19-20 Gold G01 0 30 COMP3421 T13A TUT Tue 13-14 Quad G054 0 24 COMP3421 T14A TUT Tue 14-15 Quad G045 26 30 COMP3421 T18A TUT Tue 18-19 Quad G054 21 24 COMP3421 W16A TUT Wed 16-17 Quad G031 21 24 COMP3421 W17A TUT Wed 17-18 Webst 252 0 24 COMP3421 W18A TUT Wed 18-19 Webst 251 0 30 COMP3900 F11A LAB Fri 11-13 Drum K17B8 8 20 COMP3900 F13A LAB Fri 13-15 Drum K17B8 9 20 COMP3900 M11A LAB Mon 11-13 Drum K17B8 4 20 COMP3900 M13A LAB Mon 13-15 Drum K17B8 6 20 COMP3900 M15A LAB Mon 15-17 Drum K17B8 8 20 COMP3900 T09A LAB Tue 09-11 Drum K17B8 4 20 COMP3900 T11A LAB Tue 11-13 Drum K17B8 12 20 COMP3900 T13A LAB Tue 13-15 Drum K17B8 7 20 COMP3900 W09A LAB Wed 09-11 Drum K17B8 6 20 COMP3900 W11A LAB Wed 11-13 Drum K17B8 12 20 COMP4336 F14A LAB Fri 14-16 LyreK17G12 6 20 COMP4336 F16A LAB Fri 16-18 LyreK17G12 0 18 COMP4336 H14A LAB Thu 14-16 LyreK17G12 6 20 COMP4336 H16A LAB Thu 16-18 LyreK17G12 5 20 COMP4336 M16A LAB Mon 16-18 LyreK17G12 7 20 COMP4336 T14A LAB Tue 14-16 LyreK17G12 5 20 COMP4336 T16A LAB Tue 16-18 LyreK17G12 2 20 COMP4336 W14A LAB Wed 14-16 LyreK17G12 3 20 COMP4511 M14A LAB Mon 14-17 CHIK17G13 0 10 COMP4511 T14A LAB Tue 14-17 TBA 0 10 COMP6441 F09A LAB Fri 09-11 CybSK17G11 3 20 COMP6441 F11A LAB Fri 11-13 CybSK17G11 4 20 COMP6441 F13A LAB Fri 13-15 CybSK17G11 1 20 COMP6441 F14A LAB Fri 14-16 ElecEngG09 0 30 COMP6441 F15A LAB Fri 15-17 CybSK17G11 0 20 COMP6441 H09A LAB Thu 09-11 CybSK17G11 2 20 COMP6441 H11A LAB Thu 11-13 CybSK17G11 3 20 COMP6441 H13A LAB Thu 13-15 CybSK17G11 0 20 COMP6441 H15A LAB Thu 15-17 CybSK17G11 2 20 COMP6441 H15B LAB Thu 15-17 OMB151 0 20 COMP6441 H17A LAB Thu 17-19 CybSK17G11 1 20 COMP6441 W09B LAB Wed 09-11 RedC 4034 0 24 COMP6441 W09C LAB Wed 09-11 RedC 1041 0 24 COMP6441 W11A LAB Wed 11-13 CybSK17G11 2 20 COMP6441 W13A LAB Wed 13-15 CybSK17G11 1 20 COMP6441 W13B LAB Wed 13-15 AinswthG01 0 24 COMP6441 W15A LAB Wed 15-17 CybSK17G11 4 20 COMP6441 W16A LAB Wed 16-18 Ainswth101 0 50 COMP6441 W17A LAB Wed 17-19 CybSK17G11 3 20 COMP6441 W09A LAB Wed 09-11 CybSK17G11 17 20 COMP6447 M14A LAB Mon 14-16 CybSK17G11 0 10 COMP6447 M16A LAB Mon 16-18 CybSK17G11 0 10 COMP6447 T10A LAB Tue 10-12 CybSK17G11 0 10 COMP6447 T12A LAB Tue 12-14 CybSK17G11 1 10 COMP6447 T14A LAB Tue 14-16 CybSK17G11 0 10 COMP6447 T16A SEM Tue 16-17 Quad G042 1 10 COMP6447 T17A SEM Tue 17-18 Quad G042 0 10 COMP6447 W12A SEM Wed 12-13 Quad G042 0 10 COMP6447 W13A SEM Wed 13-14 Quad G042 0 10 COMP6447 W14A SEM Wed 14-15 Quad G042 0 10 COMP6771 F10A TUT Fri 10-11 OMB151 9 30 COMP6771 F11A TUT Fri 11-12 Quad G045 6 30 COMP6771 F14A TUT Fri 14-15 Quad G042 6 22 COMP6771 F15A TUT Fri 15-16 Quad G042 0 22 COMP6771 F16A TUT Fri 16-17 Quad G027 9 30 COMP6771 F17A TUT Fri 17-18 OMB151 14 30 COMP6771 H10A TUT Thu 10-11 Webst 252 10 24 COMP6771 H11A TUT Thu 11-12 Webst 252 5 24 COMP6771 H12A TUT Thu 12-13 Quad G044 8 24 COMP6771 H13A TUT Thu 13-14 Webst 252 4 24 COMP6771 H14A TUT Thu 14-15 Mat 309 19 30 COMP6771 H15A TUT Thu 15-16 Quad G055 11 22 COMP6771 H16A TUT Thu 16-17 Quad G055 9 22 COMP6771 H17A TUT Thu 17-18 Quad G055 11 22 COMP6771 W16A TUT Wed 16-17 Quad G042 12 22 COMP6771 W17A TUT Wed 17-18 Quad G026 12 30 COMP6841 F09A LAB Fri 09-11 CybSK17G11 0 10 COMP6841 F11A LAB Fri 11-13 CybSK17G11 0 10 COMP6841 F13A LAB Fri 13-15 CybSK17G11 0 10 COMP6841 F14A LAB Fri 14-16 ElecEngG09 0 30 COMP6841 F15A LAB Fri 15-17 CybSK17G11 1 10 COMP6841 H09A LAB Thu 09-11 CybSK17G11 1 10 COMP6841 H11A LAB Thu 11-13 CybSK17G11 0 10 COMP6841 H13A LAB Thu 13-15 CybSK17G11 0 10 COMP6841 H15A LAB Thu 15-17 CybSK17G11 0 10 COMP6841 H15B LAB Thu 15-17 OMB151 0 30 COMP6841 H17A LAB Thu 17-19 CybSK17G11 1 10 COMP6841 W09A LAB Wed 09-11 CybSK17G11 1 10 COMP6841 W09B LAB Wed 09-11 RedC 4034 0 32 COMP6841 W09C LAB Wed 09-11 RedC 1041 0 38 COMP6841 W11A LAB Wed 11-13 CybSK17G11 1 10 COMP6841 W13A LAB Wed 13-15 CybSK17G11 1 10 COMP6841 W13B LAB Wed 13-15 AinswthG01 0 38 COMP6841 W15A LAB Wed 15-17 CybSK17G11 2 10 COMP6841 W16A LAB Wed 16-18 Ainswth101 0 38 COMP6841 W17A LAB Wed 17-19 CybSK17G11 0 10 COMP9044 F09A TLB Fri 09-10 ElecEngG09 6 34 COMP9044 F09B TLB Fri 09-10 Ainswth201 4 34 COMP9044 F11A TLB Fri 11-12 Law 302 1 34 COMP9044 F11B TLB Fri 11-12 Law 301 5 34 COMP9044 F13A TLB Fri 13-14 ElecEngG10 4 34 COMP9044 F13B TLB Fri 13-14 Quad G044 2 34 COMP9044 H09A TLB Thu 09-10 ElecEngG03 8 34 COMP9044 H09B TLB Thu 09-10 Quad G045 6 34 COMP9044 H11A TLB Thu 11-12 ElecEngG09 6 34 COMP9044 H11B TLB Thu 11-12 Webst 250 4 34 COMP9044 H13A TLB Thu 13-14 AinswthG01 6 34 COMP9044 H13B TLB Thu 13-14 ElecEngG04 2 34 COMP9044 T15A TLB Tue 15-16 AinswthG01 20 34 COMP9044 W09A TLB Wed 09-10 Ainswth201 10 34 COMP9044 W09B TLB Wed 09-10 Webst 302 12 34 COMP9044 W11A TLB Wed 11-12 CivEng G6 9 34 COMP9044 W11B TLB Wed 11-12 Webst 302 4 34 COMP9044 W13A TLB Wed 13-14 ElecEngG03 3 34 COMP9044 W15A TLB Wed 15-16 Quad G031 8 34 COMP9044 W17A TLB Wed 17-18 Ainswth201 9 34 COMP9154 H12A TUT Thu 12-14 Quad G045 1 10 COMP9154 H14A TUT Thu 14-16 Quad 1042 1 10 COMP9154 H16A TUT Thu 16-18 Quad 1042 0 10 COMP9311 H09A LAB Thu 09-11 Drum K17B8 10 24 COMP9311 H11A LAB Thu 11-13 Drum K17B8 12 24 COMP9311 M15A LAB Mon 15-17 FluteME303 21 24 COMP9311 M17A LAB Mon 17-19 Drum K17B8 15 24 COMP9311 T11A LAB Tue 11-13 BongoK17G7 21 24 COMP9311 T11B LAB Tue 11-13 TablaK17G7 17 24 COMP9311 T13A LAB Tue 13-15 TablaK17G7 24 24 COMP9313 H13A LAB Thu 13-15 Drum K17B8 7 24 COMP9313 H18A LAB Thu 18-20 SitarME306 1 25 COMP9313 H18B LAB Thu 18-20 KoraME307 6 24 COMP9313 M14A LAB Mon 14-16 ViolaME302 5 18 COMP9313 M14B LAB Mon 14-16 CelloME302 4 18 COMP9313 M16A LAB Mon 16-18 ViolaME302 2 18 COMP9313 M16B LAB Mon 16-18 CelloME302 3 18 COMP9313 M16C LAB Mon 16-18 BugleME305 0 18 COMP9313 M18A LAB Mon 18-20 KoraME307 3 18 COMP9313 T17A LAB Tue 17-19 Drum K17B8 1 24 COMP9313 W16A LAB Wed 16-18 FluteME303 1 25 COMP9313 W16B LAB Wed 16-18 Oboe ME304 0 25 COMP9313 W18A LAB Wed 18-20 Drum K17B8 1 24 COMP9319 H13A TUT Thu 13-14 Gold G04 3 18 COMP9319 H14A TUT Thu 14-15 Gold G04 9 18 COMP9319 H15A TUT Thu 15-16 Gold G04 0 18 COMP9319 H16A TUT Thu 16-17 Gold G04 0 18 COMP9319 H17A TUT Thu 17-18 Gold G04 9 18 COMP9319 T16A TUT Tue 16-17 Gold G04 14 18 COMP9319 T17A TUT Tue 17-18 Gold G04 11 18 COMP9319 W12A TUT Wed 12-13 Gold G04 6 18 COMP9319 W13A TUT Wed 13-14 Gold G04 0 18 COMP9319 W14A TUT Wed 14-15 Gold G04 0 18 COMP9319 W15A TUT Wed 15-16 Gold G04 14 18 COMP9319 W16A TUT Wed 16-17 Gold G04 7 18 COMP9319 W17A TUT Wed 17-18 Gold G04 10 18 COMP9322 M13A LAB Mon 13-14 TablaK17G7 0 24 COMP9322 M14A LAB Mon 14-15 Oboe ME304 9 24 COMP9322 M15A LAB Mon 15-16 TablaK17G7 0 24 COMP9322 M16A LAB Mon 16-17 SitarME306 10 24 COMP9322 H15A TUT Thu 15-16 Mat 107 10 25 COMP9322 H16A TUT Thu 16-17 Mat 107 0 25 COMP9322 H17A TUT Thu 17-18 Mat 102 9 25 COMP9331 F09A LAB Fri 09-11 Drum K17B8 8 24 COMP9331 H10A LAB Thu 10-12 BongoK17G7 15 24 COMP9331 H10B LAB Thu 10-12 TablaK17G7 11 24 COMP9331 H12A LAB Thu 12-14 FluteME303 19 24 COMP9331 H12B LAB Thu 12-14 Oboe ME304 22 24 COMP9331 H16A LAB Thu 16-18 StringsME3 20 24 COMP9331 H16B LAB Thu 16-18 BrassME305 21 24 COMP9331 M18A LAB Mon 18-20 BongoK17G7 7 24 COMP9331 M18B LAB Mon 18-20 TablaK17G7 5 24 COMP9331 T10A LAB Tue 10-12 FluteME303 9 24 COMP9331 T10B LAB Tue 10-12 Oboe ME304 3 24 COMP9331 T12A LAB Tue 12-14 StringsME3 8 24 COMP9331 T12B LAB Tue 12-14 BrassME305 10 24 COMP9331 T14A LAB Tue 14-16 SitarME306 16 24 COMP9331 T14B LAB Tue 14-16 KoraME307 15 24 COMP9331 W16A LAB Wed 16-18 SitarME306 22 24 COMP9331 W16B LAB Wed 16-18 KoraME307 17 24 COMP9331 W18A LAB Wed 18-20 BongoK17G7 19 24 COMP9331 W18B LAB Wed 18-20 TablaK17G7 13 24 COMP9332 M14A LAB Mon 14-16 Horn ME305 9 10 COMP9332 M16A LAB Mon 16-18 TablaK17G7 6 9 COMP9336 F14A LAB Fri 14-16 LyreK17G12 13 20 COMP9336 F16A LAB Fri 16-18 LyreK17G12 0 18 COMP9336 H14A LAB Thu 14-16 LyreK17G12 13 20 COMP9336 H16A LAB Thu 16-18 LyreK17G12 12 20 COMP9336 M16A LAB Mon 16-18 LyreK17G12 9 20 COMP9336 T14A LAB Tue 14-16 LyreK17G12 11 20 COMP9336 T16A LAB Tue 16-18 LyreK17G12 14 20 COMP9336 W14A LAB Wed 14-16 LyreK17G12 13 20 COMP9414 H14A TUT Thu 14-15 Quad 1049 13 20 COMP9414 H15A TUT Thu 15-16 Quad 1049 16 20 COMP9414 H16A TUT Thu 16-17 Quad 1049 16 20 COMP9414 M16A TUT Mon 16-17 Quad 1043 22 26 COMP9414 M17A TUT Mon 17-18 Quad 1043 24 26 COMP9414 T12A TUT Tue 12-13 Quad 1042 8 22 COMP9414 T13A TUT Tue 13-14 Quad 1042 12 22 COMP9414 T14A TUT Tue 14-15 Quad 1042 0 22 COMP9414 T15A TUT Tue 15-16 Quad 1042 12 22 COMP9414 T16A TUT Tue 16-17 Quad 1042 17 22 COMP9414 W12A TUT Wed 12-13 Quad 1042 12 22 COMP9414 W13A TUT Wed 13-14 Quad 1042 0 22 COMP9414 W14A TUT Wed 14-15 Quad 1042 8 22 COMP9414 W15A TUT Wed 15-16 Quad 1042 18 22 COMP9414 W16A TUT Wed 16-17 Quad 1042 18 22 COMP9415 M14A TUT Mon 14-15 Gold G05 6 24 COMP9415 M15A TUT Mon 15-16 Gold G05 0 24 COMP9415 M16A TUT Mon 16-17 Gold G01 10 30 COMP9415 M17A TUT Mon 17-18 Gold G01 0 30 COMP9415 M18A TUT Mon 18-19 Gold G01 0 30 COMP9415 M19A TUT Mon 19-20 Gold G01 0 30 COMP9415 T13A TUT Tue 13-14 Quad G054 0 24 COMP9415 T14A TUT Tue 14-15 Quad G045 4 30 COMP9415 T18A TUT Tue 18-19 Quad G054 3 24 COMP9415 W16A TUT Wed 16-17 Quad G031 3 30 COMP9415 W17A TUT Wed 17-18 Webst 252 0 24 COMP9415 W18A TUT Wed 18-19 Webst 251 0 30 COMP9417 F10A TUT Fri 10-11 ElecEngG04 5 35 COMP9417 F10B TUT Fri 10-11 BUS 118 9 28 COMP9417 F11A TUT Fri 11-12 Quad 1042 9 22 COMP9417 F11B TUT Fri 11-12 BUS 118 10 28 COMP9417 F12A TUT Fri 12-13 Quad 1042 9 22 COMP9417 F12B TUT Fri 12-13 BUS 118 5 28 COMP9417 F13A TUT Fri 13-14 ElecEngG04 12 30 COMP9417 F13B TUT Fri 13-14 BUS 118 9 28 COMP9417 F16A TUT Fri 16-17 ElecEngG09 0 20 COMP9417 F16B TUT Fri 16-17 Quad G048 0 20 COMP9417 F17A TUT Fri 17-18 ElecEngG09 3 20 COMP9417 F17B TUT Fri 17-18 Quad G027 1 20 COMP9417 H10A TUT Thu 10-11 Quad G045 10 30 COMP9417 H11A TUT Thu 11-12 Quad G045 6 30 COMP9417 H14A TUT Thu 14-15 ElecEngG10 0 24 COMP9417 H15A TUT Thu 15-16 Quad 1048 0 30 COMP9417 H16A TUT Thu 16-17 Quad 1048 10 30 COMP9417 H17A TUT Thu 17-18 Quad G027 7 20 COMP9417 T10A TUT Tue 10-11 Quad 1049 0 20 COMP9417 T11A TUT Tue 11-12 Quad 1049 13 20 COMP9417 T12A TUT Tue 12-13 Quad G032 10 20 COMP9417 T13A TUT Tue 13-14 Quad 1049 10 20 COMP9417 T14A TUT Tue 14-15 Quad 1049 11 20 COMP9417 T15A TUT Tue 15-16 Quad 1049 8 20 COMP9417 T16A TUT Tue 16-17 Quad 1049 5 20 COMP9417 W12A TUT Wed 12-13 Quad G055 7 22 COMP9417 W13A TUT Wed 13-14 ElecEngG09 17 30 COMP9417 W14A TUT Wed 14-15 Quad G046 7 22 COMP9417 W15A TUT Wed 15-16 Quad G055 1 22 COMP9417 W16A TUT Wed 16-17 Quad G055 4 22 COMP9900 F11A LAB Fri 11-13 Drum K17B8 12 15 COMP9900 F13A LAB Fri 13-15 Drum K17B8 8 15 COMP9900 M11A LAB Mon 11-13 Drum K17B8 3 15 COMP9900 M13A LAB Mon 13-15 Drum K17B8 14 15 COMP9900 M15A LAB Mon 15-17 Drum K17B8 8 15 COMP9900 T09A LAB Tue 09-11 Drum K17B8 15 15 COMP9900 T11A LAB Tue 11-13 Drum K17B8 8 15 COMP9900 T13A LAB Tue 13-15 Drum K17B8 6 15 COMP9900 W09A LAB Wed 09-11 Drum K17B8 14 15 COMP9900 W11A LAB Wed 11-13 Drum K17B8 4 15 ENGG1811 F11A LAB Fri 11-13 OrganPhysU 16 20 ENGG1811 F11B LAB Fri 11-13 ClavierPhU 15 20 ENGG1811 F13A LAB Fri 13-15 OrganPhysU 20 20 ENGG1811 F13B LAB Fri 13-15 ClavierPhU 20 20 ENGG1811 H09A LAB Thu 09-11 OrganPhysU 19 20 ENGG1811 H09B LAB Thu 09-11 ClavierPhU 18 20 ENGG1811 H11A LAB Thu 11-13 OrganPhysU 20 20 ENGG1811 H11B LAB Thu 11-13 ClavierPhU 20 20 ENGG1811 H13A LAB Thu 13-15 OrganPhysU 20 20 ENGG1811 H13B LAB Thu 13-15 ClavierPhU 19 20 ENGG1811 H15A LAB Thu 15-17 OrganPhysU 20 20 ENGG1811 H15B LAB Thu 15-17 ClavierPhU 19 20 ENGG1811 W15A LAB Wed 15-17 OrganPhysU 20 20 ENGG1811 W15B LAB Wed 15-17 ClavierPhU 20 20
Q1:计算有多少门课程
cut -f1 classes.txt | wc -l
441
Q2:计算有多少门不同的课程
cut -f1 classes.txt | sort | uniq | wc -l
35
Q3:计算出现次数最多的课程并计算出现了多少次
cut -f1 classes.txt | sort | uniq -c | sort -n | tail -1 31 COMP1521
Q4:计算以"COMP"开头的课程使用最多的教室(不计算LAB教室)并计算使用次数
egrep ‘COMP‘ classes.txt | egrep -v ‘LAB‘ | cut -f5 | sort |uniq -c | sort -nr| head -n1 26 Quad 1042
Q5:计算哪一天的哪一个时间(以开始时间为标准)课程最多
cut -f4 classes.txt | cut -d"-" -f1 | sort | uniq -c| sort -n | tail -1 20 Fri 11
原文地址：https://www.cnblogs.com/dxh1015/p/11041868.html
时间： 2024-11-12 02:15:19