{"id":210,"date":"2014-06-27T12:19:12","date_gmt":"2014-06-27T12:19:12","guid":{"rendered":"http:\/\/ixyzero.com\/blog\/?p=210"},"modified":"2014-06-27T12:19:12","modified_gmt":"2014-06-27T12:19:12","slug":"linux%e4%b8%ad%e7%9a%84shell%e5%be%aa%e7%8e%af","status":"publish","type":"post","link":"https:\/\/ixyzero.com\/blog\/archives\/210.html","title":{"rendered":"Linux\u4e0b\u5e38\u7528\u7684shell\u5faa\u73af\u683c\u5f0f"},"content":{"rendered":"<h6>for\u5faa\u73af\u67092\u79cd\u5e38\u7528\u8bed\u6cd5\u683c\u5f0f<\/h6>\n<pre class=\"lang:sh decode:true\">for i in `ls \/`;do\n    echo $i;\ndone<\/pre>\n<pre class=\"lang:sh decode:true\">for((i=1;i&lt;10;i++));do\n    echo $i;\ndone<\/pre>\n<h6>while\u5faa\u73af\u6709\u4e00\u79cd\u5e38\u7528\u8bed\u6cd5<\/h6>\n<pre class=\"lang:default decode:true \">while read line;do\n    echo $line\ndone &lt; \/etc\/passwd<\/pre>\n<h6>case \u8bed\u53e5\u6709\u4e00\u79cd\u5e38\u89c1\u7528\u6cd5<\/h6>\n<pre class=\"lang:default decode:true\">echo -n \"type your machine:\"\nread i\ncase $i in\nunix)\necho \"your machine is unix\";\n;;\nlinux)\necho \"echo your machine is linux\";\n;;\n*)\necho \"your machine is other\";\nesac<\/pre>\n<hr \/>\n<h4><strong>Bash shell<\/strong><strong>\u7684\u5404\u79cd\u5faa\u73af<\/strong><\/h4>\n<p>\u9996\u5148\u786e\u5b9a\u8be5shell\u4e3aBash\uff1a<\/p>\n<p># echo $SHELL<\/p>\n<ul>\n<li><strong>C<\/strong><strong>\u8bed\u6cd5\u683c\u5f0f\u7684<\/strong><strong>for<\/strong><strong>\u5faa\u73af<\/strong><\/li>\n<\/ul>\n<pre class=\"lang:default decode:true\">for((i=0; i&lt;10; i++));do\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 echo $i\ndone<\/pre>\n<ul>\n<li><strong>\u4f7f\u7528<\/strong><strong>seq<\/strong><strong>\u547d\u4ee4<\/strong><\/li>\n<\/ul>\n<pre class=\"lang:default decode:true\">for i in $(seq 10);do\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 echo $i\ndone<\/pre>\n<ul>\n<li><strong>while-do<\/strong><strong>\u683c\u5f0f\u7684\u5faa\u73af<\/strong><\/li>\n<\/ul>\n<pre class=\"lang:default decode:true\">i=1\nwhile(($i&lt;10));do\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 echo $i\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 i=`expr $i + 1`\ndone<\/pre>\n<ul>\n<li><strong>for&#8230;i&#8230;in<\/strong><strong>\u683c\u5f0f\u7684\u5faa\u73af<\/strong><\/li>\n<\/ul>\n<pre class=\"lang:default decode:true\">for i in {1..10};do\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 echo $i\ndone<\/pre>\n<pre class=\"lang:default decode:true\">for i in {01..10};do\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 echo $i\ndone<\/pre>\n<pre class=\"lang:default decode:true\">for i in {a..z};do\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 echo $i\ndone<\/pre>\n<ul>\n<li><strong>for<\/strong><strong>\u683c\u5f0f\u7684\u53e6\u4e00\u79cd\u5faa\u73af\uff08\u547d\u4ee4\u6267\u884c\u7ed3\u679c<\/strong><strong>\/<\/strong><strong>\u624b\u52a8\u6307\u5b9a\uff09<\/strong><\/li>\n<\/ul>\n<pre class=\"lang:default decode:true\">for i in $(ls);do\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 echo $i\ndone<\/pre>\n<pre class=\"lang:default decode:true\">for i in `ls`;do\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 echo $i\ndone<\/pre>\n<pre class=\"lang:default decode:true\">for i in f1 f2 f3;do\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 echo $i\ndone<\/pre>\n<ul>\n<li><strong>cat<\/strong><strong>\u548cwhile.<\/strong><strong>..read<\/strong><strong>\u683c\u5f0f\u7684\u5faa\u73af<\/strong><\/li>\n<\/ul>\n<pre class=\"lang:default decode:true\">cat \/tmp\/drops.txt | while read url title\ndo\n\u00a0\u00a0\u00a0 title=$(echo $title | tr ' &lt;\/' '_')\n\u00a0\u00a0\u00a0 curl -s $url | sed -n '\/&lt;div id=\"content\"&gt;\/,\/entry-tags\/p' &gt;\/tmp\/tmp.html\n\u00a0\u00a0\u00a0 cat \/tmp\/top.html \/tmp\/tmp.html \/tmp\/bottom.html &gt;\/tmp\/$title.html\ndone<\/pre>\n<pre class=\"lang:default decode:true\">while read url title\ndo\n\u00a0\u00a0\u00a0 title=$(echo $title | tr ' &lt;\/' '_')\n\u00a0\u00a0\u00a0 curl -s $url | sed -n '\/&lt;div id=\"content\"&gt;\/,\/entry-tags\/p' &gt;\/tmp\/tmp.html\n\u00a0\u00a0\u00a0 cat \/tmp\/top.html \/tmp\/tmp.html \/tmp\/bottom.html &gt;\/tmp\/$title.html\ndone &lt; \/tmp\/drops.txt<\/pre>\n<ul>\n<li><strong>\u5d4c\u5957\u5faa\u73af<\/strong><\/li>\n<\/ul>\n<pre class=\"lang:default decode:true\">dir=(papers tips tools news web pentesting database binary)\ndir_num=${#dir[@]}\nfor((i=0;i&lt;$dir_num;i++))\ndo\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 for j in $(seq 1 15)\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 do\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 if [ \"$j\" == 1 ]\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 then\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 echo http:\/\/drops.wooyun.org\/category\/${dir[i]}\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 else\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 echo http:\/\/drops.wooyun.org\/category\/${dir[i]}\/page\/$j\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 fi\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 done\ndone<\/pre>\n<pre class=\"lang:default decode:true\">arr=(\"a\" \"b\" \"c\")\necho \"arr is (${arr[@]})\"<\/pre>\n<pre class=\"lang:default decode:true\">arr=(a b c)\nfor i in ${arr[@]}\ndo\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 echo $i\ndone<\/pre>\n<pre class=\"lang:default decode:true\">echo \"\u53c2\u6570 $* \u8868\u793a\u811a\u672c\u8f93\u5165\u7684\u6240\u6709\u53c2\u6570\uff1a\"$*\nfor i in $* ; do\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 echo $i\ndone<\/pre>\n<h5>Bash\u5728\u5faa\u73af\u8bfb\u53d6\u6587\u4ef6\u5185\u5bb9\u65f6\u8df3\u8fc7\u7a7a\u884c\/\u6ce8\u91ca\u884c<\/h5>\n<p><strong>\u641c\u7d22\u5173\u952e\u5b57<\/strong>\uff1alinux bash skip blank comment line<\/p>\n<h6>\u53c2\u8003\u89e3\u7b54\uff1a<\/h6>\n<ul>\n<li><a href=\"http:\/\/www.linuxquestions.org\/questions\/linux-newbie-8\/how-can-i-cat-or-grep-a-file-to-ignore-lines-starting-with-654683\/\">http:\/\/www.linuxquestions.org\/questions\/linux-newbie-8\/how-can-i-cat-or-grep-a-file-to-ignore-lines-starting-with-654683\/<\/a><\/li>\n<li><a href=\"http:\/\/stackoverflow.com\/questions\/11267015\/how-to-ignore-blank-lines-and-comment-lines-using-awk\">http:\/\/stackoverflow.com\/questions\/11267015\/how-to-ignore-blank-lines-and-comment-lines-using-awk<\/a><\/li>\n<li><a href=\"http:\/\/stackoverflow.com\/questions\/17392869\/how-to-print-a-file-excluding-comments-and-blank-lines-using-grep-sed\">http:\/\/stackoverflow.com\/questions\/17392869\/how-to-print-a-file-excluding-comments-and-blank-lines-using-grep-sed<\/a><\/li>\n<li><a href=\"http:\/\/stackoverflow.com\/questions\/114814\/count-non-blank-lines-of-code-in-bash\">http:\/\/stackoverflow.com\/questions\/114814\/count-non-blank-lines-of-code-in-bash<\/a><\/li>\n<\/ul>\n<pre class=\"lang:default decode:true \">cat filename | grep -v '^#' | grep -v '^$'\ncat filename | grep -Ev '^(#|$)'\ncat filename | grep -Ev '(^#|^\\s*$)'\ncat filename | grep -v '^$\\|^\\s*\\#'\n\nawk '!\/^ *#\/ &amp;&amp; NF' filename\n\ncat filename | sed '\/^\\s*#\/d;\/^\\s*$\/d'<\/pre>\n<p>=EOF=<\/p>\n","protected":false},"excerpt":{"rendered":"<p>for\u5faa\u73af\u67092\u79cd\u5e38\u7528\u8bed\u6cd5\u683c\u5f0f for i in `ls \/`;do echo $i; done for((i= [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[11],"tags":[74,106,77,78,65,107],"class_list":["post-210","post","type-post","status-publish","format-standard","hentry","category-linux","tag-awk","tag-for","tag-grep","tag-sed","tag-shell","tag-while"],"views":2642,"_links":{"self":[{"href":"https:\/\/ixyzero.com\/blog\/wp-json\/wp\/v2\/posts\/210","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ixyzero.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ixyzero.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ixyzero.com\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/ixyzero.com\/blog\/wp-json\/wp\/v2\/comments?post=210"}],"version-history":[{"count":0,"href":"https:\/\/ixyzero.com\/blog\/wp-json\/wp\/v2\/posts\/210\/revisions"}],"wp:attachment":[{"href":"https:\/\/ixyzero.com\/blog\/wp-json\/wp\/v2\/media?parent=210"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ixyzero.com\/blog\/wp-json\/wp\/v2\/categories?post=210"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ixyzero.com\/blog\/wp-json\/wp\/v2\/tags?post=210"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}