{"id":32,"date":"2017-08-18T16:02:02","date_gmt":"2017-08-18T08:02:02","guid":{"rendered":"http:\/\/lst.wting.me\/?p=32"},"modified":"2017-08-19T16:02:52","modified_gmt":"2017-08-19T08:02:52","slug":"%e6%a0%91%e8%8e%93%e6%b4%be%e6%99%ba%e8%83%bd%e5%ae%b6%e5%b1%85%ef%bc%9ashell%e8%84%9a%e6%9c%ac%e4%b9%8b%e9%9f%b3%e4%b9%90%e5%88%97%e8%a1%a8","status":"publish","type":"post","link":"https:\/\/lst.wting.top\/?p=32","title":{"rendered":"\u6811\u8393\u6d3e\u667a\u80fd\u5bb6\u5c45\uff1ashell\u811a\u672c\u4e4b\u97f3\u4e50\u5217\u8868"},"content":{"rendered":"<p>Shell\u811a\u672c\u4e5f\u662f\u4e00\u4e2a\u73a9\u8f6cLinux\u975e\u5e38\u6709\u5229\u7684\u6b66\u5668\uff0c\u597d\u5427\uff0c\u5176\u5b9e\u6211\u5e76\u4e0d\u4f1a\u2026\u2026\u4f46\u662f\u57fa\u4e8e\u4e07\u79cd\u8bed\u8a00\u5f52\u4e8e\u4e00\u5b97\u7684\u601d\u60f3\uff0c\u5b66\u8fc7\u7a0b\u5e8f\u8bbe\u8ba1\u7684\u5e94\u8be5\u80fd\u5f88\u5feb\u5165\u624b\u3002<\/p>\n<p>\u7531\u4e8e\u6211\u7684\u76ee\u6807\u662f\u5f00\u53d1\u97f3\u4e50\u64ad\u653e\u5668\uff0c\u6240\u4ee5\u5c31\u4e0d\u91c7\u7528\u4f20\u7edf\u7684\u53d9\u8ff0\u65b9\u5f0f\u6765\u4e00\u6b65\u4e00\u6b65shell\u5165\u95e8\u4e86\uff0c\u76f4\u63a5\u4ece\u5e94\u7528\u89d2\u5ea6\u5f00\u53d1\uff0c\u4e00\u6b65\u5230\u4f4d\u3002<\/p>\n<p>\u97f3\u4e50\u64ad\u653e\u5668\u81f3\u5c11\u5e94\u8be5\u53ef\u4ee5\u589e\u5220\u97f3\u4e50\u6587\u4ef6\uff0c\u6587\u4ef6\u6392\u5e8f\uff0c\u968f\u673a\u64ad\u653e\uff0c\u987a\u5e8f\u64ad\u653e\uff0c\u5355\u66f2\u5faa\u73af\u3002\u9996\u5148\u6211\u4eec\u5148\u4ece\u589e\u5220\u6587\u4ef6\u6765\u5165\u624b\u3002\u56e0\u4e3a\u6570\u636e\u5e93\u7684\u914d\u7f6e\u6781\u5176\u9ebb\u70e6\uff0c\u6240\u4ee5\u6211\u4eec\u628a\u81ea\u5df1\u7684\u914d\u7f6e\u6587\u4ef6\u5199\u6210txt\u6587\u4ef6\uff0c\u65b9\u4fbf\u5b58\u53d6\u64cd\u4f5c\uff0c\u90a3\u4e48\u5982\u679c\u60f3\u5f80\u6211\u4eec\u7684\u914d\u7f6e\u6587\u4ef6raspberry.txt\u91cc\u65b0\u6dfb\u52a0\u4e00\u884c\u6570\u636e\u600e\u4e48\u529e\u5462\uff1f\u8f93\u5165\u4e0b\u9762\u547d\u4ee4\uff1a<\/p>\n<p>echo &#8220;music1.wav&#8221; &gt;<\/p>\n<p>raspberry.txt #\u8868\u793a\u6e05\u7a7a\u6587\u4ef6\u540e\u8f93\u5165<\/p>\n<p>echo &#8220;music2.wav&#8221; &gt;&gt; raspberry.txt #\u8868\u793a\u5728\u6587\u4ef6\u5c3e\u90e8\u8ffd\u52a0<\/p>\n<p>\u67e5\u770b\u6587\u4ef6\u5185\u5bb9\u5462\uff1f\u8f93\u5165\u4e0b\u9762\u547d\u4ee4\uff1a<\/p>\n<p>cat raspberry.txt<\/p>\n<p>\u5220\u9664\u67d0\u4e00\u884c\u5462\uff1f\u4f7f\u7528sed\u547d\u4ee4\uff1a<\/p>\n<p>sed -i \u20182d\u2019 raspberry.txt #\u6ce8\u610f\uff0c\u8fd9\u91cc\u52a0-i\u4e0e\u4e0d\u52a0-i\u533a\u522b\u662f\uff0c\u52a0-i\u80fd\u591f\u4fee\u6539raspberry.txt\u8fd9\u4e2a\u6587\u4ef6\u3002\u4e0d\u52a0\u53ea\u80fd\u5728\u63a7\u5236\u53f0\u663e\u793a\u5e76\u4e0d\u4fee\u6539raspberry.txt\u8fd9\u4e2a\u6587\u4ef6\u30022d\u8868\u793a\u7b2c\u4e8c\u884c\u3002<\/p>\n<p>\u5728\u8fd9\u91cc\u6211\u60f3\u7a0d\u5fae\u6269\u5c55\u4e00\u4e0bsed\u8fd9\u4e2a\u547d\u4ee4\uff0c\u6bd5\u7adf\u662f\u4e00\u4e2a\u975e\u5e38\u5f3a\u5927\u7684\u5de5\u5177\uff0c\u53ef\u4ee5\u5339\u914d\uff0c\u66ff\u6362\uff0c\u6807\u8bb0\uff0c\u751a\u81f3\u53ef\u4ee5\u6269\u5c55\u811a\u672c\uff0c\u8fd9\u4e2a\u5927\u5bb6\u53ef\u4ee5\u81ea\u884c\u767e\u5ea6\u4e00\u4e0bsed\u547d\u4ee4\uff0c\u5728\u8fd9\u91cc\u6211\u4ec5\u4ec5\u4e3e\u51e0\u4e2a\u7279\u6b8a\u7684\u4f8b\u5b50\u3002<\/p>\n<p>sed -i &#8216;s\/abc\/ABC\/g&#8217; file.txt #\u628afile.txt\u7684abc\u5168\u90e8\u66ff\u6362\u6210ABC<\/p>\n<p>sed &#8216;\/^abc\/&#8217;d file.txt #\u628afile.txt\u7684\u4ee5abc\u5f00\u5934\u7684\u884c\u5168\u90e8\u5220\u9664<\/p>\n<p>sed -n &#8216;p;n&#8217; file.txt #\u6253\u5370\u51fa\u5947\u6570\u884c<\/p>\n<p>sed -n &#8216;n;p&#8217; file.txt #\u6253\u5370\u51fa\u5076\u6570\u884c<\/p>\n<p>\u597d\u4e86\uff0c\u73b0\u5728\u589e\u5220\u90fd\u53ef\u4ee5\u5b9e\u73b0\u4e86\uff0c\u90a3\u4e48\u6211\u4eec\u5c31\u505a\u4e00\u4e2a\u811a\u672c\u6765\u901a\u8fc7\u547d\u4ee4\u81ea\u5b9a\u4e49\u589e\u52a0\u548c\u5220\u9664\u97f3\u4e50\u6587\u4ef6\u5427\uff0c\u811a\u672c\u540d\u5b57\u5047\u8bbe\u4e3aps.sh\uff0c\u5185\u5bb9\u5982\u4e0b\uff1a<\/p>\n<p>#!\/bin\/bash<\/p>\n<p>if [ &#8220;$1&#8221; == &#8220;add&#8221; ] &amp;&amp; [ ! -d &#8220;$2&#8221; ]<\/p>\n<p>then<\/p>\n<p>path=$2<\/p>\n<p>echo $2&gt;&gt;rasp.txt<\/p>\n<p>echo &#8220;$2 has been add to playlist&#8221;<\/p>\n<p>elif [ &#8220;$1&#8221; == &#8220;del&#8221; ] &amp;&amp; [ ! -d &#8220;$2&#8221; ]<\/p>\n<p>then<\/p>\n<p>paths=$2<\/p>\n<p>temp=${paths\/\/\/\/\\\/}<\/p>\n<p>sed -i &#8220;\/^$temp\/&#8221;d rasp.txt<\/p>\n<p>echo &#8220;$2 has been delete from playlist&#8221;<\/p>\n<p>else<\/p>\n<p>echo &#8220;file not exist!&#8221;<\/p>\n<p>fi<\/p>\n<p>\u5177\u4f53\u4f7f\u7528\u65b9\u6cd5\uff1a<\/p>\n<p>\u65b0\u589e\u6587\u4ef6\uff1ash ps.sh add \/home\/1.wav<\/p>\n<p>\u5220\u9664\u6587\u4ef6\uff1ash ps.sh del \/home\/1.wav<\/p>\n<p>\u5c3d\u7ba1\u8fd9\u4e2a\u5982\u6b64\u7b80\u5355\u7684\u811a\u672c\uff0c\u4e5f\u662f\u6781\u5176\u8017\u8d39\u5fc3\u529b\uff0c\u77ed\u77ed\u51e0\u53e5\u8bdd\u82b1\u8d39\u4e86\u6211\u81f3\u5c116\u4e2a\u5c0f\u65f6\u7684\u65f6\u95f4\u67e5\u8d44\u6599\u3001\u5b66\u4e60\u3002\u4e0b\u9762\u6211\u4ece\u8fd9\u4e2a\u811a\u672c\u4e2d\u6240\u9047\u5230\u7684\u95ee\u9898\u4e2d\u6765\u4e00\u4e2a\u4e2a\u8bb2\u89e3\u3002<\/p>\n<p>\u9996\u5148\u662fshell\u811a\u672c\u8f93\u5165\u53d8\u91cf\u7684\u63a5\u6536\uff0c\u8fd9\u4e2a\u8fd8\u662f\u6bd4\u8f83\u7b80\u5355\u7684\uff0c\u76f4\u63a5\u4f7f\u7528$1\u3001$2\u2026\u2026\u5c31\u80fd\u76f4\u63a5\u8bbf\u95ee\u4f20\u5165\u7684\u53c2\u6570\uff0c\u6bd4\u5982\uff0csh ps.sh add \/home\/1.wav\u8fd9\u53e5\u8bdd\u4e2d\uff0cadd\u662f$1\uff0c\/home\/1.wav\u662f$2\u3002<\/p>\n<p>\u63a5\u4e0b\u6765\u4fbf\u662f\u5224\u65ad\u8bed\u53e5\uff0c\u6807\u51c6\u5224\u65ad\u8bed\u53e5\uff0cif [ condition ] then; dosomething fi\uff0c\u5176\u4e2d[ ! -d &#8220;$2&#8221; ]\u8868\u793a\u7b2c\u4e8c\u4e2a\u53c2\u6570\u662f\u5426\u5b58\u5728\u3002<\/p>\n<p>\u6bd4\u8f83\u96be\u7684\u4e00\u70b9\u5728\u4e8esed -i &#8220;\/^$temp\/&#8221;d rasp.txt\u8fd9\u4e00\u53e5\u3002\u9996\u5148sed\u5982\u679c\u76f4\u63a5\u5728\u547d\u4ee4\u884c\u91cc\u9762\u6572\u4ee3\u7801\u6211\u4eec\u90fd\u5f88\u5bb9\u6613\u7406\u89e3\u5982sed \u2018\/abc\/d\u2019 file.txt\uff0c\u76f4\u63a5\u5199\u597d\u4e00\u4e2a\u5b57\u7b26\u4e32\u8fdb\u884c\u5339\u914d\u6216\u8005\u5220\u9664\uff0c\u4f46\u662f\u5728shell\u811a\u672c\u91cc\u5e76\u4e0d\u80fd\u76f4\u63a5\u5f15\u7528\u53d8\u91cf\uff0c\u5373\u6211\u4e0d\u80fd\u5199sed \u2018\/$var\/d\u2019 file.txt\uff0c\u56e0\u4e3a\u5355\u5f15\u53f7\u662f\u786c\u89e3\u6790\uff0c\u4f1a\u8ba4\u4e3a$var\u662f\u4e00\u4e2a\u5b57\u7b26\u4e32\u800c\u4e0d\u662f\u4e00\u4e2a\u53d8\u91cf\uff0c\u6240\u4ee5\u5728shell\u91cc\u9762\u5f15\u7528\u53d8\u91cf\u7684\u65b9\u6cd5\u6709\u56db\u79cd\uff0c\u4ee5\u66ff\u6362\u5b57\u7b26\u4e32\u4e3a\u4f8b\uff1a<\/p>\n<p>1\u3001eval sed \u2019s\/$a\/$b\/\u2019 filename<\/p>\n<p>2\u3001sed &#8220;s\/$a\/$b\/&#8221; filename<\/p>\n<p>3\u3001sed \u2019s\/\u2019$a\u2019\/\u2019$b\u2019\/\u2019 filename<\/p>\n<p>4\u3001sed s\/$a\/$b\/ filename<\/p>\n<p>\u5728\u8fd9\u91cc\u6211\u7528\u7684\u662f\u7b2c\u4e8c\u79cd\uff0c\u53cc\u5f15\u53f7\uff0c\u53cc\u5f15\u53f7\u662f\u8f6f\u89e3\u6790\uff0c\u4f1a\u8bc6\u522bshell\u7684\u53d8\u91cf\uff0c\u4ece\u800c\u5b9e\u73b0\u67e5\u627e\u7279\u5b9a\u5b57\u7b26\u5e76\u5220\u9664\u8fd9\u4e00\u884c\u3002<\/p>\n<p>\u597d\u4e86\uff0c\u5230\u8fd9\u91cc\u5220\u9664\u589e\u52a0\u5c31\u5b8c\u6bd5\u4e86\uff0c\u521a\u521a\u63a5\u89e6shell\u57fa\u7840\u5f88\u5dee\u6240\u4ee5\u6709\u5f88\u591a\u4e1c\u897f\u4e0d\u77e5\u9053\uff0c\u5bfc\u81f4\u5f00\u53d1\u76f8\u5f53\u7f13\u6162\uff0c\u4e5f\u5e0c\u671b\u5927\u795e\u4eec\u80fd\u591f\u591a\u591a\u6307\u5bfc\uff0c\u591a\u8c22\u591a\u8c22\uff01<\/p>\n<p><img decoding=\"async\" src=\"http:\/\/p3.pstatp.com\/large\/31da0002a8af24740a7e\" alt=\"\u6811\u8393\u6d3e\u667a\u80fd\u5bb6\u5c45\uff1ashell\u811a\u672c\u4e4b\u97f3\u4e50\u5217\u8868\" \/><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Shell\u811a\u672c\u4e5f\u662f\u4e00\u4e2a\u73a9\u8f6cLinux\u975e\u5e38\u6709\u5229\u7684\u6b66\u5668\uff0c\u597d\u5427\uff0c\u5176\u5b9e\u6211\u5e76\u4e0d\u4f1a\u2026\u2026\u4f46\u662f\u57fa\u4e8e\u4e07\u79cd\u8bed\u8a00\u5f52\u4e8e\u4e00\u5b97\u7684\u601d\u60f3\uff0c\u5b66\u8fc7 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[1],"tags":[11],"_links":{"self":[{"href":"https:\/\/lst.wting.top\/index.php?rest_route=\/wp\/v2\/posts\/32"}],"collection":[{"href":"https:\/\/lst.wting.top\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/lst.wting.top\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/lst.wting.top\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/lst.wting.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=32"}],"version-history":[{"count":1,"href":"https:\/\/lst.wting.top\/index.php?rest_route=\/wp\/v2\/posts\/32\/revisions"}],"predecessor-version":[{"id":33,"href":"https:\/\/lst.wting.top\/index.php?rest_route=\/wp\/v2\/posts\/32\/revisions\/33"}],"wp:attachment":[{"href":"https:\/\/lst.wting.top\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=32"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lst.wting.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=32"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lst.wting.top\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=32"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}