{"id":3114,"date":"2023-05-18T21:19:30","date_gmt":"2023-05-18T13:19:30","guid":{"rendered":"https:\/\/hsin-life.com\/?p=3114"},"modified":"2023-05-26T13:54:26","modified_gmt":"2023-05-26T05:54:26","slug":"linux%e7%9a%84read%e5%91%bd%e4%bb%a4%e8%a9%b3%e8%a7%a3%e8%88%87%e6%87%89%e7%94%a8%e5%af%a6%e4%be%8b","status":"publish","type":"post","link":"https:\/\/hsin-life.com\/archives\/3114","title":{"rendered":"Linux\u7684read\u547d\u4ee4\u8a73\u89e3\u8207\u61c9\u7528\u5be6\u4f8b"},"content":{"rendered":"\n<p>\u5728Linux\u4e2d\uff0cread\u547d\u4ee4\u88ab\u5ee3\u6cdb\u7528\u4f86\u5f9e\u6a19\u6e96\u8f38\u5165\u8b80\u53d6\u55ae\u884c\u6578\u64da\u3002\u672c\u6587\u5c07\u8a73\u7d30\u4ecb\u7d39read\u547d\u4ee4\u7684\u529f\u80fd\u8207\u53c3\u6578\uff0c\u4e26\u63d0\u4f9b\u4e86\u4e00\u4e9b\u5177\u9ad4\u7684\u61c9\u7528\u5be6\u4f8b\u3002<\/p>\n\n\n\n<p>read\u547d\u4ee4\u7684\u57fa\u672c\u8a9e\u6cd5\u662f\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\"><code>read [-ers] [-a aname] [-d delim] [-i text] [-n nchars] [-N nchars] [-p prompt] [-t timeout] [-u fd] [name ...]<\/code><\/pre>\n\n\n\n<p>\u4ee5\u4e0b\u662f\u9019\u4e9b\u53c3\u6578\u7684\u542b\u7fa9\uff1a<\/p>\n\n\n\n<ul>\n<li><code>-a<\/code>\uff1a\u5f8c\u8ddf\u4e00\u500b\u8b8a\u6578\u540d\u7a31\uff0c\u8a72\u8b8a\u6578\u5c07\u88ab\u8996\u70ba\u9663\u5217\uff0c\u4e26\u88ab\u8ce6\u503c\u3002\u9ed8\u8a8d\u60c5\u6cc1\u4e0b\uff0c\u8b8a\u6578\u7684\u503c\u7531\u7a7a\u683c\u5206\u9694\u3002<\/li>\n\n\n\n<li><code>-d<\/code>\uff1a\u5f8c\u8ddf\u4e00\u500b\u6a19\u8a8c\u7b26\uff0c\u50c5\u5176\u5f8c\u7684\u7b2c\u4e00\u500b\u5b57\u7b26\u6709\u6548\uff0c\u7528\u4f5c\u7d50\u675f\u6a19\u8a8c\u3002<\/li>\n\n\n\n<li><code>-p<\/code>\uff1a\u5f8c\u8ddf\u63d0\u793a\u8a0a\u606f\uff0c\u5728\u8b80\u53d6\u8f38\u5165\u524d\u986f\u793a\u8a72\u63d0\u793a\u8a0a\u606f\u3002<\/li>\n\n\n\n<li><code>-e<\/code>\uff1a\u5141\u8a31\u4f7f\u7528\u547d\u4ee4\u81ea\u52d5\u5b8c\u6210\u529f\u80fd\u3002<\/li>\n\n\n\n<li><code>-n<\/code>\uff1a\u5f8c\u8ddf\u4e00\u500b\u6578\u5b57\uff0c\u5b9a\u7fa9\u8f38\u5165\u6587\u672c\u7684\u9577\u5ea6\u3002<\/li>\n\n\n\n<li><code>-r<\/code>\uff1a\u7981\u6b62\u53cd\u659c\u6760\u7684\u8f49\u7fa9\u529f\u80fd\u3002\u82e5\u7121\u6b64\u9078\u9805\uff0c\u53cd\u659c\u6760\u5c07\u4f5c\u70ba\u8f49\u7fa9\u5b57\u7b26\uff1b\u82e5\u6709\u6b64\u9078\u9805\uff0c\u53cd\u659c\u6760\u5c07\u88ab\u8996\u70ba\u666e\u901a\u5b57\u7b26\u3002<\/li>\n\n\n\n<li><code>-s<\/code>\uff1a\u5b89\u975c\u6a21\u5f0f\uff0c\u8f38\u5165\u7684\u5b57\u7b26\u5c07\u4e0d\u5728\u87a2\u5e55\u4e0a\u986f\u793a\uff0c\u5982\u5728\u8f38\u5165\u5bc6\u78bc\u6642\u5e38\u7528\u6b64\u9078\u9805\u3002<\/li>\n\n\n\n<li><code>-t<\/code>\uff1a\u5f8c\u8ddf\u79d2\u6578\uff0c\u5b9a\u7fa9\u7b49\u5f85\u8f38\u5165\u7684\u6642\u9593\u3002<\/li>\n\n\n\n<li><code>-u<\/code>\uff1a\u5f8c\u8ddf\u6587\u4ef6\u63cf\u8ff0\u7b26\uff0c\u5f9e\u8a72\u6587\u4ef6\u63cf\u8ff0\u7b26\u8b80\u53d6\u8f38\u5165\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5177\u9ad4\u7684\u5be6\u4f8b\uff1a<\/p>\n\n\n\n<ol>\n<li>\u8b80\u53d6\u4e26\u986f\u793a\u8f38\u5165\u7684\u7db2\u7ad9\u540d\u7a31\uff1a<\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-preformatted\"><code>#!\/bin\/bash\necho \"\u8acb\u8f38\u5165\u7db2\u7ad9\u540d: \"  \nread website  \necho \"\u4f60\u8f38\u5165\u7684\u7db2\u7ad9\u540d\u662f $website\"  <\/code><\/pre>\n\n\n\n<ol start=\"2\">\n<li>\u4f7f\u7528 <code>-p<\/code> \u53c3\u6578\u76f4\u63a5\u5728read\u547d\u4ee4\u884c\u4e2d\u7d66\u51fa\u63d0\u793a\uff1a<\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-preformatted\"><code>#!\/bin\/bash\nread -p \"\u8acb\u8f38\u5165\u7db2\u7ad9\u540d:\" website\necho \"\u4f60\u8f38\u5165\u7684\u7db2\u7ad9\u540d\u662f $website\" <\/code><\/pre>\n\n\n\n<ol start=\"3\">\n<li>\u4f7f\u7528 <code>-t<\/code> \u53c3\u6578\u8a2d\u5b9a\u7b49\u5f85\u8f38\u5165\u7684\u6642\u9593\uff1a<\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-preformatted\"><code>#!\/bin\/bash\nif read -t 5 -p \"\u8acb\u8f38\u5165\u7db2\u7ad9\u540d:\" website\nthen\n  echo \"\u4f60\u8f38\u5165\u7684\u7db2\u7ad9\u540d\u662f $website\"\nelse\n  echo \"\\n\u62b1\u6b49\uff0c\u4f60\u8f38\u5165\u8d85\u6642\u4e86\u3002\"\nfi<\/code><\/pre>\n\n\n\n<ol start=\"4\">\n<li>\u4f7f\u7528 <code>-n<\/code> \u53c3\u6578\u9650\u5b9a\u8f38\u5165\u7684\u5b57\u7b26\u6578\u91cf\uff1a<\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-preformatted\"><code>#!\/bin\/bash\nread -n1 -p \"Do you want to continue [Y\/N]?\" answer\ncase $answer in\nY | y)\n  echo \"fine ,continue\";;\nN | n)\n  echo \"ok,good bye\";;\n*)\n  echo \"error choice\";;\nesac<\/code><\/pre>\n\n\n\n<ol start=\"5\">\n<li>\u4f7f\u7528 <code>-s<\/code> \u53c3\u6578\u5728\u8f38\u5165\u6642\u4e0d\u986f\u793a\u5b57\u7b26\uff1a<\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-preformatted\"><code>#!\/bin\/bash\nread  -s  -p \"\u8acb\u8f38\u5165\u60a8\u7684\u5bc6\u78bc:\" pass\necho \"\\n\u60a8\u8f38\u5165\u7684\u5bc6\u78bc\u662f $pass\"<\/code><\/pre>\n\n\n\n<ol start=\"6\">\n<li>\u8b80\u53d6\u6587\u4ef6\u4e2d\u7684\u6bcf\u4e00\u884c\u6578\u64da\uff1a<\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-preformatted\"><code>#!\/bin\/bash\ncount=1\ncat test.txt | while read line\ndo\n  echo \"Line $count:$line\"\n  count=$[ $count + 1 ]\ndone\necho \"finish\"<\/code><\/pre>\n\n\n\n<p>\u7d50\u8ad6\uff1aread\u547d\u4ee4\u662f\u4e00\u500b\u529f\u80fd\u5f37\u5927\u4e14\u9748\u6d3b\u7684\u5de5\u5177\uff0c\u5b83\u5728Linux\u548cBash\u8173\u672c\u7de8\u7a0b\u4e2d\u626e\u6f14\u4e86\u91cd\u8981\u89d2\u8272\u3002\u7406\u89e3\u4e26\u719f\u7df4\u4f7f\u7528read\u547d\u4ee4\uff0c\u53ef\u4ee5\u4f7f\u6211\u5011\u5728\u64b0\u5beb\u8173\u672c\u6216\u5728\u547d\u4ee4\u5217\u64cd\u4f5c\u4e2d\u66f4\u52a0\u5f97\u5fc3\u61c9\u624b\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u672c\u6587\u5c07\u8a73\u7d30\u89e3\u91cbLinux\u7684read\u547d\u4ee4\u53ca\u5176\u5e38\u7528\u9078\u9805\uff0c\u4e26\u901a\u904e\u5404\u7a2e\u5be6\u4f8b\u4f86\u5c55\u793a\u5982\u4f55\u5728Bash\u8173\u672c\u4e2d\u4f7f\u7528read\u547d\u4ee4\u4f86\u8b80\u53d6\u7528\u6236\u8f38\u5165\u6216\u6587\u4ef6\u5167\u5bb9\u3002<\/p>\n","protected":false},"author":1,"featured_media":3115,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_kad_post_transparent":"","_kad_post_title":"","_kad_post_layout":"","_kad_post_sidebar_id":"","_kad_post_content_style":"","_kad_post_vertical_padding":"","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[752],"tags":[1043,694,1045,1046,1044],"aioseo_notices":[],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"https:\/\/i0.wp.com\/hsin-life.com\/wp-content\/uploads\/2023\/05\/pexels-photo-930530-3.jpeg?fit=1880%2C1253&ssl=1","jetpack-related-posts":[],"_links":{"self":[{"href":"https:\/\/hsin-life.com\/wp-json\/wp\/v2\/posts\/3114"}],"collection":[{"href":"https:\/\/hsin-life.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/hsin-life.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/hsin-life.com\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/hsin-life.com\/wp-json\/wp\/v2\/comments?post=3114"}],"version-history":[{"count":3,"href":"https:\/\/hsin-life.com\/wp-json\/wp\/v2\/posts\/3114\/revisions"}],"predecessor-version":[{"id":3245,"href":"https:\/\/hsin-life.com\/wp-json\/wp\/v2\/posts\/3114\/revisions\/3245"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/hsin-life.com\/wp-json\/wp\/v2\/media\/3115"}],"wp:attachment":[{"href":"https:\/\/hsin-life.com\/wp-json\/wp\/v2\/media?parent=3114"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/hsin-life.com\/wp-json\/wp\/v2\/categories?post=3114"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/hsin-life.com\/wp-json\/wp\/v2\/tags?post=3114"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}