{"id":1489,"date":"2016-11-27T08:53:59","date_gmt":"2016-11-27T00:53:59","guid":{"rendered":"http:\/\/cn.hostease.com\/xueyuan\/?p=1489"},"modified":"2016-11-27T08:53:59","modified_gmt":"2016-11-27T00:53:59","slug":"shell-%e6%b5%81%e7%a8%8b%e6%8e%a7%e5%88%b6","status":"publish","type":"post","link":"https:\/\/cn.hostease.com\/xueyuan\/jishu\/shell-%e6%b5%81%e7%a8%8b%e6%8e%a7%e5%88%b6\/","title":{"rendered":"Shell \u6d41\u7a0b\u63a7\u5236"},"content":{"rendered":"
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\n

Shell \u6d41\u7a0b\u63a7\u5236<\/h1>\n

\u548cJava\u3001PHP\u7b49\u8bed\u8a00\u4e0d\u4e00\u6837\uff0csh\u7684\u6d41\u7a0b\u63a7\u5236\u4e0d\u53ef\u4e3a\u7a7a\uff0c\u5982(\u4ee5\u4e0b\u4e3aPHP\u6d41\u7a0b\u63a7\u5236\u5199\u6cd5)\uff1a<\/p>\n

<?<\/span>php\r\n<\/span>if<\/span> (<\/span>isset<\/span>(<\/span>$_GET<\/span>[<\/span>\"q\"<\/span>]))<\/span> {<\/span>\r\n    search<\/span>(<\/span>q<\/span>);<\/span>\r\n}<\/span>\r\nelse<\/span> {<\/span>\r\n    \/\/ \u4e0d\u505a\u4efb\u4f55\u4e8b\u60c5<\/span>\r\n}<\/span><\/pre>\n
\u5728sh\/bash\u91cc\u53ef\u4e0d\u80fd\u8fd9\u4e48\u5199\uff0c\u5982\u679celse\u5206\u652f\u6ca1\u6709\u8bed\u53e5\u6267\u884c\uff0c\u5c31\u4e0d\u8981\u5199\u8fd9\u4e2aelse\u3002<\/p>\n
\n
if else<\/h2>\n
if<\/h3>\n
if \u8bed\u53e5\u8bed\u6cd5\u683c\u5f0f\uff1a<\/p>\n
if<\/span> condition\r\n<\/span>then<\/span>\r\n    command1 \r\n    command2\r\n    <\/span>...<\/span>\r\n    commandN \r\n<\/span>fi<\/span><\/pre>\n
\u5199\u6210\u4e00\u884c\uff08\u9002\u7528\u4e8e\u7ec8\u7aef\u547d\u4ee4\u63d0\u793a\u7b26\uff09\uff1a<\/p>\n
if<\/span> [<\/span> $<\/span>(<\/span>ps <\/span>-<\/span>ef <\/span>|<\/span> grep <\/span>-<\/span>c <\/span>\"ssh\"<\/span>)<\/span> -<\/span>gt <\/span>1<\/span> ];<\/span> then<\/span> echo <\/span>\"true\"<\/span>;<\/span> fi<\/span><\/pre>\n
\u672b\u5c3e\u7684fi\u5c31\u662fif\u5012\u8fc7\u6765\u62fc\u5199\uff0c\u540e\u9762\u8fd8\u4f1a\u9047\u5230\u7c7b\u4f3c\u7684\u3002<\/p>\n
if else<\/h3>\n
if else \u8bed\u6cd5\u683c\u5f0f\uff1a<\/p>\n
if<\/span> condition\r\n<\/span>then<\/span>\r\n    command1 \r\n    command2\r\n    <\/span>...<\/span>\r\n    commandN\r\n<\/span>else<\/span>\r\n    command\r\n<\/span>fi<\/span><\/pre>\n
if else-if else<\/h3>\n
if else-if else \u8bed\u6cd5\u683c\u5f0f\uff1a<\/p>\n
if<\/span> condition1\r\n<\/span>then<\/span>\r\n    command1\r\n<\/span>elif<\/span> condition2 \r\n<\/span>then<\/span> \r\n    command2\r\n<\/span>else<\/span>\r\n    commandN\r\n<\/span>fi<\/span><\/pre>\n
\u4ee5\u4e0b\u5b9e\u4f8b\u5224\u65ad\u4e24\u4e2a\u53d8\u91cf\u662f\u5426\u76f8\u7b49\uff1a<\/p>\n
a<\/span>=<\/span>10<\/span>\r\nb<\/span>=<\/span>20<\/span>\r\nif<\/span> [<\/span> $a <\/span>==<\/span> $b <\/span>]<\/span>\r\nthen<\/span>\r\n   echo <\/span>\"a \u7b49\u4e8e b\"<\/span>\r\nelif<\/span> [<\/span> $a <\/span>-<\/span>gt $b <\/span>]<\/span>\r\nthen<\/span>\r\n   echo <\/span>\"a \u5927\u4e8e b\"<\/span>\r\nelif<\/span> [<\/span> $a <\/span>-<\/span>lt $b <\/span>]<\/span>\r\nthen<\/span>\r\n   echo <\/span>\"a \u5c0f\u4e8e b\"<\/span>\r\nelse<\/span>\r\n   echo <\/span>\"\u6ca1\u6709\u7b26\u5408\u7684\u6761\u4ef6\"<\/span>\r\nfi<\/span><\/pre>\n
\u8f93\u51fa\u7ed3\u679c\uff1a<\/p>\n
a <\/span>\u5c0f\u4e8e<\/span> b<\/span><\/pre>\n
if else\u8bed\u53e5\u7ecf\u5e38\u4e0etest\u547d\u4ee4\u7ed3\u5408\u4f7f\u7528\uff0c\u5982\u4e0b\u6240\u793a\uff1a<\/p>\n
num1<\/span>=<\/span>$<\/span>[<\/span>2<\/span>*<\/span>3<\/span>]<\/span>\r\nnum2<\/span>=<\/span>$<\/span>[<\/span>1<\/span>+<\/span>5<\/span>]<\/span>\r\nif<\/span> test $<\/span>[<\/span>num1<\/span>]<\/span> -<\/span>eq $<\/span>[<\/span>num2<\/span>]<\/span>\r\nthen<\/span>\r\n    echo <\/span>'\u4e24\u4e2a\u6570\u5b57\u76f8\u7b49!'<\/span>\r\nelse<\/span>\r\n    echo <\/span>'\u4e24\u4e2a\u6570\u5b57\u4e0d\u76f8\u7b49!'<\/span>\r\nfi<\/span><\/pre>\n
\u8f93\u51fa\u7ed3\u679c\uff1a<\/p>\n
\u4e24\u4e2a\u6570\u5b57\u76f8\u7b49!<\/span><\/pre>\n
\n
for \u5faa\u73af<\/h2>\n
\u4e0e\u5176\u4ed6\u7f16\u7a0b\u8bed\u8a00\u7c7b\u4f3c\uff0cShell\u652f\u6301for\u5faa\u73af\u3002<\/p>\n
for\u5faa\u73af\u4e00\u822c\u683c\u5f0f\u4e3a\uff1a<\/p>\n
for<\/span> var<\/span> in<\/span> item1 item2 <\/span>...<\/span> itemN\r\n<\/span>do<\/span>\r\n    command1\r\n    command2\r\n    <\/span>...<\/span>\r\n    commandN\r\n<\/span>done<\/span><\/pre>\n
\u5199\u6210\u4e00\u884c\uff1a<\/p>\n
for<\/span> var<\/span> in<\/span> item1 item2 <\/span>...<\/span> itemN<\/span>;<\/span> do<\/span> command1<\/span>;<\/span> command2<\/span>\u2026<\/span> done<\/span>;<\/span><\/pre>\n
\u5f53\u53d8\u91cf\u503c\u5728\u5217\u8868\u91cc\uff0cfor\u5faa\u73af\u5373\u6267\u884c\u4e00\u6b21\u6240\u6709\u547d\u4ee4\uff0c\u4f7f\u7528\u53d8\u91cf\u540d\u83b7\u53d6\u5217\u8868\u4e2d\u7684\u5f53\u524d\u53d6\u503c\u3002\u547d\u4ee4\u53ef\u4e3a\u4efb\u4f55\u6709\u6548\u7684shell\u547d\u4ee4\u548c\u8bed\u53e5\u3002in\u5217\u8868\u53ef\u4ee5\u5305\u542b\u66ff\u6362\u3001\u5b57\u7b26\u4e32\u548c\u6587\u4ef6\u540d\u3002<\/p>\n
in\u5217\u8868\u662f\u53ef\u9009\u7684\uff0c\u5982\u679c\u4e0d\u7528\u5b83\uff0cfor\u5faa\u73af\u4f7f\u7528\u547d\u4ee4\u884c\u7684\u4f4d\u7f6e\u53c2\u6570\u3002<\/p>\n
\u4f8b\u5982\uff0c\u987a\u5e8f\u8f93\u51fa\u5f53\u524d\u5217\u8868\u4e2d\u7684\u6570\u5b57\uff1a<\/p>\n
for<\/span> loop <\/span>in<\/span> 1<\/span> 2<\/span> 3<\/span> 4<\/span> 5<\/span>\r\ndo<\/span>\r\n    echo <\/span>\"The value is: $loop\"<\/span>\r\ndone<\/span><\/pre>\n
\u8f93\u51fa\u7ed3\u679c\uff1a<\/p>\n
The<\/span> value <\/span>is<\/span>:<\/span> 1<\/span>\r\nThe<\/span> value <\/span>is<\/span>:<\/span> 2<\/span>\r\nThe<\/span> value <\/span>is<\/span>:<\/span> 3<\/span>\r\nThe<\/span> value <\/span>is<\/span>:<\/span> 4<\/span>\r\nThe<\/span> value <\/span>is<\/span>:<\/span> 5<\/span><\/pre>\n
\u987a\u5e8f\u8f93\u51fa\u5b57\u7b26\u4e32\u4e2d\u7684\u5b57\u7b26\uff1a<\/p>\n
for<\/span> str <\/span>in<\/span> 'This is a string'<\/span>\r\ndo<\/span>\r\n    echo $str\r\n<\/span>done<\/span><\/pre>\n
\u8f93\u51fa\u7ed3\u679c\uff1a<\/p>\n
This<\/span> is<\/span> a <\/span>string<\/span><\/pre>\n
\n
while \u8bed\u53e5<\/h2>\n
while\u5faa\u73af\u7528\u4e8e\u4e0d\u65ad\u6267\u884c\u4e00\u7cfb\u5217\u547d\u4ee4\uff0c\u4e5f\u7528\u4e8e\u4ece\u8f93\u5165\u6587\u4ef6\u4e2d\u8bfb\u53d6\u6570\u636e\uff1b\u547d\u4ee4\u901a\u5e38\u4e3a\u6d4b\u8bd5\u6761\u4ef6\u3002\u5176\u683c\u5f0f\u4e3a\uff1a<\/p>\n
while<\/span> condition\r\n<\/span>do<\/span>\r\n    command\r\n<\/span>done<\/span><\/pre>\n
\u4ee5\u4e0b\u662f\u4e00\u4e2a\u57fa\u672c\u7684while\u5faa\u73af\uff0c\u6d4b\u8bd5\u6761\u4ef6\u662f\uff1a\u5982\u679cint\u5c0f\u4e8e\u7b49\u4e8e5\uff0c\u90a3\u4e48\u6761\u4ef6\u8fd4\u56de\u771f\u3002int\u4ece0\u5f00\u59cb\uff0c\u6bcf\u6b21\u5faa\u73af\u5904\u7406\u65f6\uff0cint\u52a01\u3002\u8fd0\u884c\u4e0a\u8ff0\u811a\u672c\uff0c\u8fd4\u56de\u6570\u5b571\u52305\uff0c\u7136\u540e\u7ec8\u6b62\u3002<\/p>\n
#!\/bin\/sh<\/span>\r\nint<\/span>=<\/span>1<\/span>\r\nwhile<\/span>((<\/span> $int<\/span><=<\/span>5<\/span> ))<\/span>\r\ndo<\/span>\r\n        echo $int\r\n        <\/span>let<\/span> \"int++\"<\/span>\r\ndone<\/span><\/pre>\n
\u8fd0\u884c\u811a\u672c\uff0c\u8f93\u51fa\uff1a<\/p>\n
1<\/span>\r\n2<\/span>\r\n3<\/span>\r\n4<\/span>\r\n5<\/span><\/pre>\n
\u4f7f\u7528\u4e2d\u4f7f\u7528\u4e86 Bash let \u547d\u4ee4\uff0c\u5b83\u7528\u4e8e\u6267\u884c\u4e00\u4e2a\u6216\u591a\u4e2a\u8868\u8fbe\u5f0f\uff0c\u53d8\u91cf\u8ba1\u7b97\u4e2d\u4e0d\u9700\u8981\u52a0\u4e0a $ \u6765\u8868\u793a\u53d8\u91cf\uff0c\u5177\u4f53\u53ef\u67e5\u9605\uff1aBash let \u547d\u4ee4<\/a><\/p>\n
\u3002while\u5faa\u73af\u53ef\u7528\u4e8e\u8bfb\u53d6\u952e\u76d8\u4fe1\u606f\u3002\u4e0b\u9762\u7684\u4f8b\u5b50\u4e2d\uff0c\u8f93\u5165\u4fe1\u606f\u88ab\u8bbe\u7f6e\u4e3a\u53d8\u91cfFILM\uff0c\u6309<Ctrl-D>\u7ed3\u675f\u5faa\u73af\u3002<\/p>\n
echo <\/span>'\u6309\u4e0b <CTRL-D> \u9000\u51fa'<\/span>\r\necho <\/span>-<\/span>n <\/span>'\u8f93\u5165\u4f60\u6700\u559c\u6b22\u7684\u7535\u5f71\u540d: '<\/span>\r\nwhile<\/span> read FILM\r\n<\/span>do<\/span>\r\n    echo <\/span>\"\u662f\u7684\uff01$FILM \u662f\u4e00\u90e8\u597d\u7535\u5f71\"<\/span>\r\ndone<\/span><\/pre>\n
\u8fd0\u884c\u811a\u672c\uff0c\u8f93\u51fa\u7c7b\u4f3c\u4e0b\u9762\uff1a<\/p>\n
\u6309\u4e0b<\/span> <<\/span>CTRL<\/span>-<\/span>D<\/span>><\/span> \u9000\u51fa<\/span>\r\n\u8f93\u5165\u4f60\u6700\u559c\u6b22\u7684\u7535\u5f71\u540d:<\/span> w3cschool<\/span>\u83dc\u9e1f\u6559\u7a0b<\/span>\r\n\u662f\u7684\uff01<\/span>w3cschool<\/span>\u83dc\u9e1f\u6559\u7a0b<\/span> \u662f\u4e00\u90e8\u597d\u7535\u5f71<\/span><\/pre>\n
\u65e0\u9650\u5faa\u73af<\/h3>\n
\u65e0\u9650\u5faa\u73af\u8bed\u6cd5\u683c\u5f0f\uff1a<\/p>\n
while<\/span> :<\/span>\r\ndo<\/span>\r\n    command\r\n<\/span>done<\/span><\/pre>\n
\u6216\u8005<\/p>\n
while<\/span> true<\/span>\r\ndo<\/span>\r\n    command\r\n<\/span>done<\/span><\/pre>\n
\u6216\u8005<\/p>\n
for<\/span> ((<\/span> ;<\/span> ;<\/span> ))<\/span><\/pre>\n
\n
until \u5faa\u73af<\/h2>\n
until\u5faa\u73af\u6267\u884c\u4e00\u7cfb\u5217\u547d\u4ee4\u76f4\u81f3\u6761\u4ef6\u4e3a\u771f\u65f6\u505c\u6b62\u3002<\/p>\n
until\u5faa\u73af\u4e0ewhile\u5faa\u73af\u5728\u5904\u7406\u65b9\u5f0f\u4e0a\u521a\u597d\u76f8\u53cd\u3002<\/p>\n
\u4e00\u822cwhile\u5faa\u73af\u4f18\u4e8euntil\u5faa\u73af\uff0c\u4f46\u5728\u67d0\u4e9b\u65f6\u5019\u2014\u4e5f\u53ea\u662f\u6781\u5c11\u6570\u60c5\u51b5\u4e0b\uff0cuntil\u5faa\u73af\u66f4\u52a0\u6709\u7528\u3002<\/p>\n
until \u8bed\u6cd5\u683c\u5f0f:<\/p>\n
until<\/span> condition\r\n<\/span>do<\/span>\r\n    command\r\n<\/span>done<\/span><\/pre>\n
\u6761\u4ef6\u53ef\u4e3a\u4efb\u610f\u6d4b\u8bd5\u6761\u4ef6\uff0c\u6d4b\u8bd5\u53d1\u751f\u5728\u5faa\u73af\u672b\u5c3e\uff0c\u56e0\u6b64\u5faa\u73af\u81f3\u5c11\u6267\u884c\u4e00\u6b21\u2014\u8bf7\u6ce8\u610f\u8fd9\u4e00\u70b9\u3002<\/p>\n
\n
case<\/h2>\n
Shell case\u8bed\u53e5\u4e3a\u591a\u9009\u62e9\u8bed\u53e5\u3002\u53ef\u4ee5\u7528case\u8bed\u53e5\u5339\u914d\u4e00\u4e2a\u503c\u4e0e\u4e00\u4e2a\u6a21\u5f0f\uff0c\u5982\u679c\u5339\u914d\u6210\u529f\uff0c\u6267\u884c\u76f8\u5339\u914d\u7684\u547d\u4ee4\u3002case\u8bed\u53e5\u683c\u5f0f\u5982\u4e0b\uff1a<\/p>\n
case<\/span> \u503c<\/span> in<\/span>\r\n\u6a21\u5f0f<\/span>1<\/span>)<\/span>\r\n    command1\r\n    command2\r\n    <\/span>...<\/span>\r\n    commandN\r\n    <\/span>;;<\/span>\r\n\u6a21\u5f0f<\/span>2<\/span>\uff09<\/span>\r\n    command1\r\n    command2\r\n    <\/span>...<\/span>\r\n    commandN\r\n    <\/span>;;<\/span>\r\nesac<\/span><\/pre>\n
case\u5de5\u4f5c\u65b9\u5f0f\u5982\u4e0a\u6240\u793a\u3002\u53d6\u503c\u540e\u9762\u5fc5\u987b\u4e3a\u5355\u8bcdin\uff0c\u6bcf\u4e00\u6a21\u5f0f\u5fc5\u987b\u4ee5\u53f3\u62ec\u53f7\u7ed3\u675f\u3002\u53d6\u503c\u53ef\u4ee5\u4e3a\u53d8\u91cf\u6216\u5e38\u6570\u3002\u5339\u914d\u53d1\u73b0\u53d6\u503c\u7b26\u5408\u67d0\u4e00\u6a21\u5f0f\u540e\uff0c\u5176\u95f4\u6240\u6709\u547d\u4ee4\u5f00\u59cb\u6267\u884c\u76f4\u81f3 ;;\u3002<\/p>\n
\u53d6\u503c\u5c06\u68c0\u6d4b\u5339\u914d\u7684\u6bcf\u4e00\u4e2a\u6a21\u5f0f\u3002\u4e00\u65e6\u6a21\u5f0f\u5339\u914d\uff0c\u5219\u6267\u884c\u5b8c\u5339\u914d\u6a21\u5f0f\u76f8\u5e94\u547d\u4ee4\u540e\u4e0d\u518d\u7ee7\u7eed\u5176\u4ed6\u6a21\u5f0f\u3002\u5982\u679c\u65e0\u4e00\u5339\u914d\u6a21\u5f0f\uff0c\u4f7f\u7528\u661f\u53f7 * \u6355\u83b7\u8be5\u503c\uff0c\u518d\u6267\u884c\u540e\u9762\u7684\u547d\u4ee4\u3002<\/p>\n
\u4e0b\u9762\u7684\u811a\u672c\u63d0\u793a\u8f93\u51651\u52304\uff0c\u4e0e\u6bcf\u4e00\u79cd\u6a21\u5f0f\u8fdb\u884c\u5339\u914d\uff1a<\/p>\n
echo <\/span>'\u8f93\u5165 1 \u5230 4 \u4e4b\u95f4\u7684\u6570\u5b57:'<\/span>\r\necho <\/span>'\u4f60\u8f93\u5165\u7684\u6570\u5b57\u4e3a:'<\/span>\r\nread aNum\r\n<\/span>case<\/span> $aNum <\/span>in<\/span>\r\n    1<\/span>)<\/span>  echo <\/span>'\u4f60\u9009\u62e9\u4e86 1'<\/span>\r\n    ;;<\/span>\r\n    2<\/span>)<\/span>  echo <\/span>'\u4f60\u9009\u62e9\u4e86 2'<\/span>\r\n    ;;<\/span>\r\n    3<\/span>)<\/span>  echo <\/span>'\u4f60\u9009\u62e9\u4e86 3'<\/span>\r\n    ;;<\/span>\r\n    4<\/span>)<\/span>  echo <\/span>'\u4f60\u9009\u62e9\u4e86 4'<\/span>\r\n    ;;<\/span>\r\n    *)<\/span>  echo <\/span>'\u4f60\u6ca1\u6709\u8f93\u5165 1 \u5230 4 \u4e4b\u95f4\u7684\u6570\u5b57'<\/span>\r\n    ;;<\/span>\r\nesac<\/span><\/pre>\n
\u8f93\u5165\u4e0d\u540c\u7684\u5185\u5bb9\uff0c\u4f1a\u6709\u4e0d\u540c\u7684\u7ed3\u679c\uff0c\u4f8b\u5982\uff1a<\/p>\n
\u8f93\u5165<\/span> 1<\/span> \u5230<\/span> 4<\/span> \u4e4b\u95f4\u7684\u6570\u5b57:<\/span>\r\n\u4f60\u8f93\u5165\u7684\u6570\u5b57\u4e3a:<\/span>\r\n3<\/span>\r\n\u4f60\u9009\u62e9\u4e86<\/span> 3<\/span><\/pre>\n
\n
\u8df3\u51fa\u5faa\u73af<\/h2>\n
\u5728\u5faa\u73af\u8fc7\u7a0b\u4e2d\uff0c\u6709\u65f6\u5019\u9700\u8981\u5728\u672a\u8fbe\u5230\u5faa\u73af\u7ed3\u675f\u6761\u4ef6\u65f6\u5f3a\u5236\u8df3\u51fa\u5faa\u73af\uff0cShell\u4f7f\u7528\u4e24\u4e2a\u547d\u4ee4\u6765\u5b9e\u73b0\u8be5\u529f\u80fd\uff1abreak\u548ccontinue\u3002<\/p>\n
break\u547d\u4ee4<\/h3>\n
break\u547d\u4ee4\u5141\u8bb8\u8df3\u51fa\u6240\u6709\u5faa\u73af\uff08\u7ec8\u6b62\u6267\u884c\u540e\u9762\u7684\u6240\u6709\u5faa\u73af\uff09\u3002<\/p>\n
\u4e0b\u9762\u7684\u4f8b\u5b50\u4e2d\uff0c\u811a\u672c\u8fdb\u5165\u6b7b\u5faa\u73af\u76f4\u81f3\u7528\u6237\u8f93\u5165\u6570\u5b57\u5927\u4e8e5\u3002\u8981\u8df3\u51fa\u8fd9\u4e2a\u5faa\u73af\uff0c\u8fd4\u56de\u5230shell\u63d0\u793a\u7b26\u4e0b\uff0c\u9700\u8981\u4f7f\u7528break\u547d\u4ee4\u3002<\/p>\n
#!\/bin\/bash<\/span>\r\nwhile<\/span> :<\/span>\r\ndo<\/span>\r\n    echo <\/span>-<\/span>n <\/span>\"\u8f93\u5165 1 \u5230 5 \u4e4b\u95f4\u7684\u6570\u5b57:\"<\/span>\r\n    read aNum\r\n    <\/span>case<\/span> $aNum <\/span>in<\/span>\r\n        1<\/span>|<\/span>2<\/span>|<\/span>3<\/span>|<\/span>4<\/span>|<\/span>5<\/span>)<\/span> echo <\/span>\"\u4f60\u8f93\u5165\u7684\u6570\u5b57\u4e3a $aNum!\"<\/span>\r\n        ;;<\/span>\r\n        *)<\/span> echo <\/span>\"\u4f60\u8f93\u5165\u7684\u6570\u5b57\u4e0d\u662f 1 \u5230 5 \u4e4b\u95f4\u7684! \u6e38\u620f\u7ed3\u675f\"<\/span>\r\n            break<\/span>\r\n        ;;<\/span>\r\n    esac<\/span>\r\ndone<\/span><\/pre>\n
\u6267\u884c\u4ee5\u4e0a\u4ee3\u7801\uff0c\u8f93\u51fa\u7ed3\u679c\u4e3a\uff1a<\/p>\n
\u8f93\u5165<\/span> 1<\/span> \u5230<\/span> 5<\/span> \u4e4b\u95f4\u7684\u6570\u5b57:<\/span>3<\/span>\r\n\u4f60\u8f93\u5165\u7684\u6570\u5b57\u4e3a<\/span> 3<\/span>!<\/span>\r\n\u8f93\u5165<\/span> 1<\/span> \u5230<\/span> 5<\/span> \u4e4b\u95f4\u7684\u6570\u5b57:<\/span>7<\/span>\r\n\u4f60\u8f93\u5165\u7684\u6570\u5b57\u4e0d\u662f<\/span> 1<\/span> \u5230<\/span> 5<\/span> \u4e4b\u95f4\u7684!<\/span> \u6e38\u620f\u7ed3\u675f<\/span><\/pre>\n
continue<\/h3>\n
continue\u547d\u4ee4\u4e0ebreak\u547d\u4ee4\u7c7b\u4f3c\uff0c\u53ea\u6709\u4e00\u70b9\u5dee\u522b\uff0c\u5b83\u4e0d\u4f1a\u8df3\u51fa\u6240\u6709\u5faa\u73af\uff0c\u4ec5\u4ec5\u8df3\u51fa\u5f53\u524d\u5faa\u73af\u3002<\/p>\n
\u5bf9\u4e0a\u9762\u7684\u4f8b\u5b50\u8fdb\u884c\u4fee\u6539\uff1a<\/p>\n
#!\/bin\/bash<\/span>\r\nwhile<\/span> :<\/span>\r\ndo<\/span>\r\n    echo <\/span>-<\/span>n <\/span>\"\u8f93\u5165 1 \u5230 5 \u4e4b\u95f4\u7684\u6570\u5b57: \"<\/span>\r\n    read aNum\r\n    <\/span>case<\/span> $aNum <\/span>in<\/span>\r\n        1<\/span>|<\/span>2<\/span>|<\/span>3<\/span>|<\/span>4<\/span>|<\/span>5<\/span>)<\/span> echo <\/span>\"\u4f60\u8f93\u5165\u7684\u6570\u5b57\u4e3a $aNum!\"<\/span>\r\n        ;;<\/span>\r\n        *)<\/span> echo <\/span>\"\u4f60\u8f93\u5165\u7684\u6570\u5b57\u4e0d\u662f 1 \u5230 5 \u4e4b\u95f4\u7684!\"<\/span>\r\n            continue<\/span>\r\n            echo <\/span>\"\u6e38\u620f\u7ed3\u675f\"<\/span>\r\n        ;;<\/span>\r\n    esac<\/span>\r\ndone<\/span><\/pre>\n
\u8fd0\u884c\u4ee3\u7801\u53d1\u73b0\uff0c\u5f53\u8f93\u5165\u5927\u4e8e5\u7684\u6570\u5b57\u65f6\uff0c\u8be5\u4f8b\u4e2d\u7684\u5faa\u73af\u4e0d\u4f1a\u7ed3\u675f\uff0c\u8bed\u53e5  echo “Game is over!”<\/strong> \u6c38\u8fdc\u4e0d\u4f1a\u88ab\u6267\u884c\u3002<\/p>\n
\n
esac<\/h2>\n
case\u7684\u8bed\u6cd5\u548cC family\u8bed\u8a00\u5dee\u522b\u5f88\u5927\uff0c\u5b83\u9700\u8981\u4e00\u4e2aesac\uff08\u5c31\u662fcase\u53cd\u8fc7\u6765\uff09\u4f5c\u4e3a\u7ed3\u675f\u6807\u8bb0\uff0c\u6bcf\u4e2acase\u5206\u652f\u7528\u53f3\u5706\u62ec\u53f7\uff0c\u7528\u4e24\u4e2a\u5206\u53f7\u8868\u793abreak\u3002<\/p>\n<\/div>\n<\/div>\n
 <\/p>\n
\u539f\u6587\u94fe\u63a5\uff1ahttps:\/\/www.runoob.com\/linux\/linux-shell-process-control.html<\/p>\n","protected":false},"excerpt":{"rendered":"
Shell \u6d41\u7a0b\u63a7\u5236 \u548cJava\u3001PHP\u7b49\u8bed\u8a00\u4e0d\u4e00\u6837\uff0csh\u7684\u6d41\u7a0b\u63a7\u5236\u4e0d\u53ef\u4e3a\u7a7a\uff0c\u5982(\u4ee5\u4e0b\u4e3aPHP\u6d41\u7a0b\u63a7\u5236\u5199\u6cd5)\uff1a … \u9605\u8bfb\u66f4\u591a<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[49,5],"tags":[474],"class_list":["post-1489","post","type-post","status-publish","format-standard","hentry","category-linux","category-jishu","tag-linuxshell"],"aioseo_notices":[],"jetpack_featured_media_url":"","jetpack-related-posts":[],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/posts\/1489","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/comments?post=1489"}],"version-history":[{"count":1,"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/posts\/1489\/revisions"}],"predecessor-version":[{"id":1490,"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/posts\/1489\/revisions\/1490"}],"wp:attachment":[{"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/media?parent=1489"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/categories?post=1489"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/tags?post=1489"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}