{"id":1294,"date":"2020-05-21T01:27:26","date_gmt":"2020-05-20T17:27:26","guid":{"rendered":"http:\/\/39.97.231.10\/?p=1294"},"modified":"2020-05-21T01:27:26","modified_gmt":"2020-05-20T17:27:26","slug":"linux%e7%b3%bb%e7%bb%9f%e6%97%a5%e5%b8%b8%e8%bf%90%e7%bb%b4","status":"publish","type":"post","link":"http:\/\/www.weijing.co\/?p=1294","title":{"rendered":"Linux\u7cfb\u7edf\u65e5\u5e38\u8fd0\u7ef4"},"content":{"rendered":"

1\u3001linux\u542f\u52a8\u8fc7\u7a0b<\/h3>\n
\u5f00\u542f\u7535\u6e90 --> BIOS\u5f00\u673a\u81ea\u68c0 --> \u5f15\u5bfc\u7a0b\u5e8flilo\u6216grub --> \u5185\u6838\u7684\u5f15\u5bfc\uff08kernel boot\uff09--> \u6267\u884cinit\uff08rc.sysinit\u3001rc\uff09--> mingetty(\u5efa\u7acb\u7ec8\u7aef) --> shell<\/pre>\n
2\u3001\u7f51\u5361\u7ed1\u5b9a\u591aIP<\/h3>\n
ifconfig eth0:1 192.168.1.99\u00a0netmask 255.255.255.0<\/pre>\n
3\u3001\u8bbe\u7f6eDNS\u3001\u7f51\u5173<\/h3>\n
echo \\\"nameserver 202.16.53.68\\\" >> \/etc\/resolv.conf\nroute add default gw 192.168.1.1<\/pre>\n
4\u3001\u5f39\u51fa\u3001\u6536\u56de\u5149\u9a71<\/h3>\n
eject\neject -t<\/pre>\n
5\u3001\u7528date\u67e5\u8be2\u6628\u5929\u7684\u65e5\u671f<\/h3>\n
date --date=yesterday<\/pre>\n
6\u3001\u67e5\u8be2file\u91cc\u9762\u7a7a\u884c\u7684\u6240\u5728\u884c\u53f7<\/h3>\n
grep ^$ file<\/pre>\n
7\u3001\u67e5\u8be2file\u4ee5abc\u7ed3\u5c3e\u7684\u884c<\/h3>\n
grep abc$ file1<\/pre>\n
8\u3001\u6253\u5370\u51fafile\u6587\u4ef6\u7b2c1\u5230\u7b2c\u4e09\u884c<\/h3>\n
sed -n \\'1,3p\\' file\nhead -3 file<\/pre>\n
9\u3001\u6e05\u7a7a\u6587\u4ef6<\/h3>\n
true > file.txt\necho \\\"\\\" > file.txt\n> file.txt\ncat \/dev\/null > file.txt<\/pre>\n
10\u3001\u5220\u9664\u6240\u6709\u7a7a\u76ee\u5f55<\/h3>\n
find \/data -type d -empty -exec rm -rf {} \\\\;<\/pre>\n
11\u3001linux\u4e0b\u6279\u91cf\u5220\u9664\u7a7a\u6587\u4ef6\uff08\u5927\u5c0f\u7b49\u4e8e0\u7684\u6587\u4ef6\uff09\u7684\u65b9\u6cd5<\/h3>\n
find \/data -type f -size 0c -exec rm -rf {} \\\\;\nfind \/data -type f -size 0c|xargs rm \u2013f<\/pre>\n
12\u3001\u5220\u9664\u4e94\u5929\u524d\u7684\u6587\u4ef6<\/h3>\n
find \/data -mtime +5 -type f -exec rm -rf {} \\\\;<\/pre>\n
13\u3001\u5220\u9664\u4e24\u4e2a\u6587\u4ef6\u91cd\u590d\u7684\u90e8\u4efd\uff0c\u6253\u5370\u5176\u5b83<\/h3>\n
cat 1.txt 3.txt |sort |uniq<\/pre>\n
14\u3001\u653b\u53d6\u8fdc\u7a0b\u670d\u52a1\u5668\u4e3b\u673a\u540d<\/h3>\n
echo `ssh $IP cat \/etc\/sysconfig\/network|awk -F = \\'\/HOSTNAME\/ {print $2}\\'`<\/pre>\n
15\u3001\u5b9e\u65f6\u76d1\u63a7\u7f51\u5361\u6d41\u91cf\uff08\u5b89\u88c5iftop\uff09<\/h3>\n
iftop -i eth1 -n<\/pre>\n
16\u3001\u67e5\u770b\u7cfb\u7edf\u7248\u672c<\/h3>\n
lsb_release -a<\/pre>\n
17\u3001\u5f3a\u5236\u8e22\u51fa\u767b\u9646\u7528\u6237<\/h3>\n
pkill -KILL -t pts\/1<\/pre>\n
18\u3001tar\u589e\u7406\u5907\u4efd\u3001\u8fd8\u539f<\/h3>\n
tar -g king -zcvf\u00a0kerry_full.tar.gz kerry\ntar -g king -zcvf kerry_diff_1.tar.gz kerry\ntar -g king -zcvf kerry_diff_2.tar.gz kerry\ntar -zxvf kerry_full.tar.gz\ntar -zxvf kerry_diff_1.tar.gz\ntar -zxvf kerry_diff_2.tar.gz<\/pre>\n
19\u3001\u5c06\u672c\u573080\u7aef\u53e3\u7684\u8bf7\u6c42\u8f6c\u53d1\u52308080\u7aef\u53e3\uff0c\u5f53\u524d\u4e3b\u673a\u5916\u7f51IP\u4e3a202.96.85.46<\/h3>\n
-A PREROUTING\u00a0-d 202.96.85.46 -p tcp -m tcp --dport 80 -j DNAT --to-destination 192.168.9.10:8080<\/pre>\n
20\u3001\u572811\u6708\u4efd\u5185\uff0c\u6bcf\u5929\u7684\u65e9\u4e0a6\u70b9\u523012\u70b9\u4e2d\uff0c\u6bcf\u96942\u5c0f\u65f6\u6267\u884c\u4e00\u6b21\/usr\/bin\/httpd.sh<\/h3>\n
crontab -e\n0 6-12\/2 * 11 * \/usr\/bin\/httpd.sh<\/pre>\n
21\u3001\u67e5\u770b\u5360\u7528\u7aef\u53e38080\u7684\u8fdb\u7a0b<\/h3>\n
netstat -tnlp | grep 8080\nlsof -i:8080<\/pre>\n
22\u3001\u5728Shell\u73af\u5883\u4e0b,\u5982\u4f55\u67e5\u770b\u8fdc\u7a0bLinux\u7cfb\u7edf\u8fd0\u884c\u4e86\u591a\u5c11\u65f6\u95f4?<\/h3>\n
ssh user@\u88ab\u76d1\u63a7\u4e3b\u673aip \\\"uptime\\\"<\/pre>\n
23\u3001\u67e5\u770bCPU\u4f7f\u7528\u60c5\u51b5\u7684\u547d\u4ee4<\/h3>\n
\u6bcf5\u79d2\u5237\u65b0\u4e00\u6b21\uff0c\u6700\u53f3\u4fa7\u6709CPU\u7684\u5360\u7528\u7387\u7684\u6570\u636e\nvmstat 5\ntop \u7136\u540e\u6309Shift+P\uff0c\u6309\u7167\u8fdb\u7a0b\u5904\u7406\u5668\u5360\u7528\u7387\u6392\u5e8f\ntop<\/pre>\n
24\u3001\u67e5\u770b\u5185\u5b58\u4f7f\u7528\u60c5\u51b5\u7684\u547d\u4ee4<\/h3>\n
\u7528free\u547d\u4ee4\u67e5\u770b\u5185\u5b58\u4f7f\u7528\u60c5\u51b5\nfree -m\ntop \u7136\u540e\u6309Shift+M, \u6309\u7167\u8fdb\u7a0b\u5185\u5b58\u5360\u7528\u7387\u6392\u5e8f\ntop<\/pre>\n
25\u3001\u67e5\u770b\u78c1\u76d8i\/o<\/h3>\n
\u7528iostat\u67e5\u770b\u78c1\u76d8\/dev\/sdc3\u7684\u78c1\u76d8i\/o\u60c5\u51b5\uff0c\u6bcf\u4e24\u79d2\u5237\u65b0\u4e00\u6b21\niostat -d -x \/dev\/sdc3 2<\/pre>\n
26\u3001\u4fee\u590d\u6587\u4ef6\u7cfb\u7edf<\/h3>\n
fsck \u2013yt ext3 \/\n-t \u6307\u5b9a\u6587\u4ef6\u7cfb\u7edf\n-y \u5bf9\u53d1\u73b0\u7684\u95ee\u9898\u81ea\u52a8\u56de\u7b54yes<\/pre>\n
27\u3001read \u547d\u4ee45\u79d2\u540e\u81ea\u52a8\u9000\u51fa<\/h3>\n
read -t 5<\/pre>\n
28\u3001grep -E -P \u662f\u4ec0\u4e48\u610f\u601d<\/h3>\n
-E, --extended-regexp \u91c7\u7528\u6269\u5c55\u6b63\u89c4\u8868\u8fbe\u5f0f\u3002\n-P\uff0c--perl-regexp \u91c7\u7528perl\u6b63\u89c4\u8868\u8fbe\u5f0f<\/pre>\n
29\u3001vi\u7f16\u8f91\u5668(\u6d89\u53ca\u5230\u4fee\u6539\uff0c\u6dfb\u52a0\uff0c\u67e5\u627e)<\/h3>\n
\u63d2\u5165(insert)\u6a21\u5f0f\ni\u3000\u3000\u3000\u3000\u5149\u6807\u524d\u63d2\u5165\nI\u3000\u3000\u3000\u3000\u5149\u6807\u884c\u9996\u63d2\u5165\na\u3000\u3000\u3000\u3000\u5149\u6807\u540e\u63d2\u5165\nA\u3000\u3000\u3000\u3000\u5149\u6807\u884c\u5c3e\u63d2\u5165\no\u3000\u3000\u3000\u3000\u5149\u6807\u6240\u5728\u884c\u4e0b\u63d2\u5165\u4e00\u884c\uff0c\u884c\u9996\u63d2\u5165\nO\u3000\u3000\u3000\u3000\u5149\u6807\u6240\u5728\u884c\u4e0a\u63d2\u5165\u4e00\u884c\uff0c\u884c\u9996\u63d2\u5165\nG\u3000\u3000\u3000\u3000\u79fb\u81f3\u6700\u540e\u4e00\u884c\u884c\u9996\nnG\u3000\u3000\u3000\u3000\u79fb\u81f3\u7b2cn\u884c\u884c\u9996\nn+\u3000\u3000\u3000\u3000\u4e0b\u79fbn\u884c\uff0c\u884c\u9996\nn-\u3000\u3000\u3000\u3000\u4e0a\u79fbn\u884c\uff0c\u884c\u9996\n:\/str\/\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u4ece\u5f53\u524d\u5f80\u53f3\u79fb\u52a8\u5230\u6709str\u7684\u5730\u65b9\n:?str?\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u4ece\u5f53\u524d\u5f80\u5de6\u79fb\u52a8\u5230\u6709str\u7684\u5730\u65b9\n:s\/str1\/str2\/\u3000\u3000\u3000\u3000\u3000\u3000\u5c06\u627e\u5230\u7684\u7b2c\u4e00\u4e2astr1\u66ff\u6362\u4e3astr2\u3000\u3000\n:s\/str2\/str2\/g\u3000\u3000\u3000\u3000\u3000\u3000\u5c06\u5f53\u524d\u884c\u627e\u5230\u7684\u6240\u6709str1\u66ff\u6362\u4e3astr2\n:n1,n2s\/str1\/str2\/g\u3000\u3000\u3000\u3000\u5c06\u4ecen1\u884c\u81f3n2\u884c\u627e\u5230\u7684\u6240\u6709\u7684str1\u66ff\u6362\u4e3astr2\n:1,.s\/str1\/str2\/g\u3000\u3000\u3000\u3000\u3000\u3000\u5c06\u4ece\u7b2c1\u884c\u81f3\u5f53\u524d\u884c\u7684\u6240\u6709str1\u66ff\u6362\u4e3astr2\n:.,$s\/str1\/str2\/g\u3000\u3000\u3000\u3000\u3000\u3000\u5c06\u4ece\u5f53\u524d\u884c\u81f3\u6700\u540e\u4e00\u884c\u7684\u6240\u6709str1\u66ff\u6362\u4e3astr2<\/pre>\n
30\u3001linux\u670d\u52a1\u5668\u4e4b\u95f4\u76f8\u4e92\u590d\u5236\u6587\u4ef6<\/h3>\n
copy \u672c\u5730\u6587\u4ef61.sh\u5230\u8fdc\u7a0b192.168.9.10\u670d\u52a1\u5668\u7684\/data\/\u76ee\u5f55\u4e0b\nscp \/etc\/1.sh king@192.168.9.10:\/data\/\ncopy\u8fdc\u7a0b192.168.9.10\u670d\u52a1\u5668\/data\/2.sh\u6587\u4ef6\u5230\u672c\u5730\/data\/\u76ee\u5f55\nscp king@192.168.9.10:\/data\/2.sh \/data\/<\/pre>\n
31\u3001\u4f7f\u7528sed\u547d\u4ee4\u628atest.txt\u6587\u4ef6\u7684\u7b2c23\u884c\u7684TEST\u6362\u6210TSET.<\/h3>\n
sed -i \\'23s\/TEST\/TSET\/\\' test.txt\nsed -i \\'23 s\/TEST\/TSET\/\\' test.txt<\/pre>\n
32\u3001\u4f7fhistory\u547d\u4ee4\u80fd\u663e\u793a\u65f6\u95f4<\/h3>\n
export HISTTIMEFORMAT=\\\"%F %T \\\"<\/pre>\n
33\u3001\u5982\u4f55\u67e5\u770b\u76ee\u6807\u4e3b\u673a192.168.0.1\u5f00\u653e\u90a3\u4e9b\u7aef\u53e3<\/h3>\n
nmap -PS 192.168.0.1<\/pre>\n
34\u3001\u5982\u4f55\u67e5\u770b\u7f51\u7edc\u8fde\u63a5<\/h3>\n
netstat -n | awk \\'\/^tcp\/ {++S[$NF]} END {for(a in S) print a, S[a]}\\'<\/pre>\n
35\u3001\u5982\u4f55\u67e5\u770b\u5f53\u524d\u7cfb\u7edf\u4f7f\u7528\u4e86\u90a3\u4e9b\u5e93\u6587\u4ef6<\/h3>\n
ldconfig -v<\/pre>\n
36\u3001\u5982\u4f55\u67e5\u770b\u7f51\u5361\u7684\u9a71\u52a8\u7248\u672c<\/h3>\n
ethtool -i eth0<\/pre>\n
37\u3001\u4f7f\u7528tcpdump\u6765\u76d1\u89c6\u4e3b\u673a192.168.0.1\u7684tcp\u768480\u7aef\u53e3<\/h3>\n
tcpdump tcp port 80 host 192.168.0.1<\/pre>\n
38\u3001 \u5982\u4f55\u770b\u5176\u5b83\u7528\u6237\u7684\u90ae\u4ef6\u5217\u8868<\/h3>\n
mial -u king<\/pre>\n
39\u3001\u5bf9\u5927\u6587\u4ef6\u8fdb\u884c\u5207\u5272<\/h3>\n
\u6309\u6bcf\u4e2a\u6587\u4ef61000\u884c\u6765\u5206\u5272\nsplit -l 1000 httperr8007.log httperr\n\u6309\u7167\u6bcf\u4e2a\u6587\u4ef65m\u6765\u5206\u5272\nsplit -b 5m httperr8007.log httperr<\/pre>\n
40\u3001\u5408\u5e76\u6587\u4ef6<\/h3>\n
\u53d6\u51fa\u4e24\u4e2a\u6587\u4ef6\u7684\u5e76\u96c6(\u91cd\u590d\u7684\u884c\u53ea\u4fdd\u7559\u4e00\u4efd)\ncat file1 file2 | sort | uniq\n\u53d6\u51fa\u4e24\u4e2a\u6587\u4ef6\u7684\u4ea4\u96c6(\u53ea\u7559\u4e0b\u540c\u65f6\u5b58\u5728\u4e8e\u4e24\u4e2a\u6587\u4ef6\u4e2d\u7684\u6587\u4ef6)\ncat file1 file2 | sort | uniq -d\n\u5220\u9664\u4ea4\u96c6\uff0c\u7559\u4e0b\u5176\u4ed6\u7684\u884c\ncat file1 file2 | sort | uniq \u2013u<\/pre>\n
41\u3001\u6253\u5370\u6587\u672c\u6a21\u5f0f\u4e0b\u8fd0\u884c\u7684\u670d\u52a1<\/h3>\n
chkconfig --list|awk \\'$5~\/on\/{print $1,$5}\\'<\/pre>\n
<\/p>\n","protected":false},"excerpt":{"rendered":"
1\u3001linux\u542f\u52a8\u8fc7\u7a0b \u5f00\u542f\u7535\u6e90 –> BIOS\u5f00\u673a\u81ea\u68c0 –> \u5f15\u5bfc\u7a0b\u5e8flilo\u6216grub – …<\/p>\n
  Linux\u7cfb\u7edf\u65e5\u5e38\u8fd0\u7ef4<\/span> \u67e5\u770b\u5168\u6587 »<\/a><\/p>\n","protected":false},"author":4,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"default","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":""},"categories":[102],"tags":[],"uagb_featured_image_src":{"full":false,"thumbnail":false,"medium":false,"medium_large":false,"large":false,"1536x1536":false,"2048x2048":false,"mailpoet_newsletter_max":false,"woocommerce_thumbnail":false,"woocommerce_single":false,"woocommerce_gallery_thumbnail":false,"shop_catalog":false,"shop_single":false,"shop_thumbnail":false},"uagb_author_info":{"display_name":"weijing","author_link":"http:\/\/www.weijing.co\/?author=4"},"uagb_comment_info":0,"uagb_excerpt":"1\u3001linux\u542f\u52a8\u8fc7\u7a0b \u5f00\u542f\u7535\u6e90 --> BIOS\u5f00\u673a\u81ea\u68c0 --> \u5f15\u5bfc\u7a0b\u5e8flilo\u6216grub -…","_links":{"self":[{"href":"http:\/\/www.weijing.co\/index.php?rest_route=\/wp\/v2\/posts\/1294"}],"collection":[{"href":"http:\/\/www.weijing.co\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.weijing.co\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.weijing.co\/index.php?rest_route=\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"http:\/\/www.weijing.co\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1294"}],"version-history":[{"count":0,"href":"http:\/\/www.weijing.co\/index.php?rest_route=\/wp\/v2\/posts\/1294\/revisions"}],"wp:attachment":[{"href":"http:\/\/www.weijing.co\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1294"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.weijing.co\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1294"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.weijing.co\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1294"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}