Related case actions for Shell commands

Case 1: variables, functions, judgments, comparisons

test.sh

[JavaScript]View PlainCopy

2. #!/bin/bash
4. Echo ======================== This is a bash demo========================
6. printf "%s is%d years old \ n" Zhengjinwei
10. DECLARE count=10
12. DECLARE fruit=apple
16. Declare strnormal="We have $count ${fruit} ' s"
18. Declare strspecial="We have $count ${fruit}"
26. function Printstr ()
28. {
30. if [$count-gt 1]; Then
32. echo "$strNormal"
34. Else
36. echo "$strSpecial"
38. Fi
40. }
44. Printstr
48. echo $ (uname)
52. #########################################
54. DECLARE num=1000
56. function Printnum ()
58. {
60. Local num=10
61. 2. Let num+=10
    4. Echo $num
    6. }
    10. Echo "The global num is: $num"
    14. ECHO-E "Call Printnum Function:"
    16. Printnum
    26. o "==================this is if else fi .... Test demo====================="
    28. If [-F "test.sh"]; Then
    30. echo "named Test.sh is a file:"
    32. Else
    34. echo "named test.sh is not a file:"
    36. Fi
    40. function Checkvariablehavenum ()
    42. {
    44. if [-N '];
    46. echo "This variable has value"
    48. Else
    50. echo "This variable has not value"
    52. Fi
    54. }
    58. DECLARE g_num=10
    60. Checkvariablehavenum $g _num
    64. function Checkvariableequal ()
    66. {
    67. 2. If ["$"-eq "$" ]; Then
        4. printf "%d = =%d" $
        6. elif [ "$"-ne "$"]; Then
        8. printf "%d! =%d" $ A
        10. elif [ "$"-ge "$"]; Then
        12. printf "%d >=%d" $
        14. elif [ "$"-gt "$"]; Then
        16. printf "%d >%d" $
        18. elif [ "$"-lt "$"]; Then
        20. printf "%d <%d" $
        22. Else
        24. printf "%d <=%d" $
        26. Fi
        28. }
        32. Checkvariableequal 2 4
        34. Checkvariableequal 4 2
        36. Checkvariableequal 2 2

    68. Case 2: String manipulation (take substring)

        [JavaScript]View PlainCopy
        2. echo "-------------------------------------"
        4. ####### #this is String opt################################
        6. #get string ' s length
        8. DECLARE strname="Zhengjinwei"
        10. DECLARE strnamelength=${#strName}
        12. printf "The length of%s is%d \ n" $strName $strNameLength
        18. function getchildstring ()
        20. {
        22. Local strresourse=$1
        24. Local nparamcount=$2
        26. Local nstartpos=$3
        28. Local nendpos=$4
        32. if [[$nParamCount-lt 3]]; Then
        34. echo "param less than 3 is err"
        36. elif [[$nParamCount-GT 4]]; Then
        38. echo "param more than 4 is err"
        40. Else
        44. if [[$nParamCount-eq 3]]; Then
        46. Let nendpos=${#StrResourse}
        48. Else
        50. Let nendpos=$4
        52. Fi
        54. Fi
        58. Local strresult=${strresourse: $nStartPos: $nEndPos}
        2. printf "The child string in%s from position%d to%d is%s: \n\n\n" $StrResourse $nStartPos $nEndPos $strResult
        4. }
        6. Getchildstring "Zhengjinwei" 4 2 6
        8. Getchildstring "Zhengjinwei" 3 2

        63. Case 3: Iterations, arrays

            [JavaScript]View PlainCopy
            2. ###########################################################
            4. <span style="FONT-SIZE:24PX;" ># This is array test demo
            6. Declare array_int= (1 2 3 4 5 6 7)
            10. printf "The int value in Array_int which index was%d is%d\n\n" 0 ${array_int["0"}
            14. echo "=============for loop=============================="
            16. DECLARE array_int_len=${#array_int [*]}
            18. For ((i=0;i<"$array _int_len"; i++))
            20. Do
            22. Echo-e ${array_int[$i]}
            24. Done
            28. echo ""
            30. echo "============for iterator loop================================"
            34. For value in ${array_int[@]}
            36. Do
            38. ECHO-E $value
            40. Done
            46. echo ""
            48. echo "==========while loop=================================="
            52. DECLARE i=0
            54. while (($i < $array _int_len))
            56. Do
            58. Echo-e ${array_int[$i]}
            60. Let I=i+1
            62. Done
            66. ########################################################</span>

            Case 4: Time action

            [JavaScript]View PlainCopy
            2. function Getnowtime ()
            4. {
            6. Local _date=$ (date +%y-%m-%d:%h-%m-%s:%a)
            8. Echo $_date
            10. }
            14. function Getcosttime ()
            16. {
            18. Local _start=$ (date +%s)
            20. Sleep 2
            22. Local _end=$ (date +%s)
            24. Local _cost=$ ((_end-_start))
            26. Echo $_cost
            28. }
            32. function Getdifftimebetweeninseconds ()
            34. {
            36. Local _start=$ (date +%s-d ' 2010-09-01 17:00:00 ')
            38. Local _end=$ (date +%s-d ' 2011-09-01 18:40:40 ')
            40. tep=$ (($_end-$_start))
            42. tep2=$ ((3600*24))
            44. result=$ (($tep/$tep 2))
            48. extra=$[$tep% $tep 2]
            52. DECLARE _hours=0
            54. DECLARE _seconds=0
            56. if [$extra-ge 3600]; Then
            58. _hours=$ (($extra/3600))
            60. _seconds=$ (($extra%3600))
            62. Else
            64. 1. _hours=0
                2. _seconds= $extra
                3. Fi
                5. printf "%d days---%d hours----%d seconds \ n" $result $_hours $_seconds
                6. }
                7. Getnowtime
                8. Getcosttime
                9. Getdifftimebetweeninseconds

Related case actions for Shell commands