syspro-0405.ppt

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1 3 4, 5 1

2 UNIX csh 2.1 bash X Window 2

3 grep l POSIX * more POSIX 3

4 UNIX. 4

5 first.sh #!bin/sh #first.sh #This file looks through all the files in the current #directory for the string yamada, and then prints those #files to the standard output. for file in * do if grep -q yamada $file then more $file fi done exit 0 /bin/sh first.sh 5

6 if, elif, for, while, until, case 6

7 FOO foo echo 7

8 bash-2.05$ salutation=hello bash-2.05$ echo $salutation bash-2.05$ salutation= Yes Dear bash-2.05$ echo $salutation bash-2.05$ salutation=7+5 bash-2.05$ echo $salutation 8

9 #!bin/sh myvar="hi there" echo $myvar echo "$myvar" echo '$myvar' echo \$myvar read echo Enter some text read myvar echo '$myvar' now equals $myvar exit 0 9

10 10

11 11

12 !/bin/sh salutation="hello" echo $salutation echo "The program $0 is now running" echo "The second parameter was $2" echo "The first parameter was $1" echo "The parameter list was $*" echo "The user's home directory is $HOME" echo "Please enter a new greeting" read salutation echo $salutation echo "The script is now complete" exit 0 12

13 test( [ ] ) [ ] test test if test -f fred.c then fi [ -f fred.c ] 13

14 test test.sh #!/bin/sh if test -f fred.c then echo "File fred.c exists." else echo "File fred.c not found." fi exit 0 14

15 test 15

16 if if condition then statements else statements fi 16

17 if if1.sh #!/bin/sh echo "Is it morning? Please answer yes or no" read timeofday if [ $timeofday = "yes" ]; then echo "Good morning" else echo "Good afternoon" fi exit 0 17

18 If if2.sh!/bin/sh echo "Is it morning? Please answer yes or no" read timeofday if [ $timeofday = "yes" ]; then echo "Good morning" elif [ $timeofday = "no" ]; then echo "Good afternoon" else echo "Sorry, $timeofday not recognized. Enter yes or no" exit 1 fi exit 0 18

19 If 3 if3.sh!/bin/sh echo "Is it morning? Please answer yes or no" read timeofday if [ $timeofday = "yes" ]; then echo "Good morning" elif [ $timeofday = "no" ]; then echo "Good afternoon" else echo "Sorry, $timeofday not recognized. Enter yes or no" exit 1 fi exit 0 19

20 for, while, case C for for variable in values do statements done 20

21 for 1 for1.sh #!bin/sh/ for name in aoki tokunaga ohzeki 43 do echo $name done exit 0 21

22 for for2.sh #!bin/sh/ for file in $(ls *.c); do echo $file done exit 0 22

23 While for 10 #!/bin/sh for foo in do echo "here we go again" done exit 0 23

24 While while while condition do statements done 24

25 while while1.sh #!bin/sh echo "Enter your password" read trythis while [ "$trythis"!= "secret" ] do echo "Sorry, try again" read trythis done echo "Login succeeded." exit 0 25

26 while2.sh #!/bin/sh i=1 while while [ "$i" -le 10 ] do echo "Loop number : $i" i=$(($i+1)) done exit 0 26

27 case case case variable in pattern pattern. ) statements1;; pattern pattern. ) statements2;;.. esac 27

28 case case1.sh 28

29 case case2.sh 29

30 case case3.sh 30

31 *.txt 31

32 And Or AND statement1 && statement2 && statement3 false Or statement1 statement2 statement3 true 32

33 And Or 33

34 function_name( ){ statements } #!bin/sh func1.sh foo(){ echo "Function foo is executing" } echo "script starting" foo echo "script ended" exit 0 34

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37 37

38 [filename] % /bin/sh judge.sh [filename] "WARNING! No such file [filename]" "Enter Filename: " % /bin/sh judge.sh Wrong number of arguments. Usage /bin/sh judge.sh filename 38

39 Enter filename: datafile.txt Enter keyword: Aoki Yoshimitsu Aoki C *.c *.c.bak 39

40 *.c C source file *.sh Shell script file *.txt Text file else 40

I117 II I117 PROGRAMMING PRACTICE II SCRIPT LANGUAGE 1 Research Center for Advanced Computing Infrastructure (RCACI) / Yasuhiro Ohara

I117 II I117 PROGRAMMING PRACTICE II SCRIPT LANGUAGE 1 Research Center for Advanced Computing Infrastructure (RCACI) / Yasuhiro Ohara yasu@jaist.ac.jp / SCHEDULE 1. 2011/06/07(Tue) / Basic of Programming