{"id":255,"date":"2022-01-08T10:38:30","date_gmt":"2022-01-08T02:38:30","guid":{"rendered":"http:\/\/www.cgh0610.cn\/?p=255"},"modified":"2022-01-08T10:38:30","modified_gmt":"2022-01-08T02:38:30","slug":"linux%e5%91%bd%e4%bb%a4%e5%a4%a7%e5%85%a8","status":"publish","type":"post","link":"https:\/\/www.cgh0610.cn\/?p=255","title":{"rendered":"Linux\u547d\u4ee4\u5927\u5168"},"content":{"rendered":"

\u57fa\u672c\u64cd\u4f5c<\/h2>\n

Linux \u5173\u673a,\u91cd\u542f<\/h3>\n
#\u00a0\u5173\u673a\nshutdown\u00a0-h\u00a0now\n#\u00a0\u91cd\u542f\u65b9\u5f0f1\nshutdown\u00a0-r\u00a0now\n#\u00a0\u91cd\u542f\u65b9\u5f0f2\ninit 6\n<\/code><\/pre>\n
\u67e5\u770b\u7cfb\u7edf,CPU\u4fe1\u606f<\/h3>\n
# \u67e5\u770b\u7cfb\u7edf\u5185\u6838\u4fe1\u606f\nuname -a\n\n# \u67e5\u770b\u7cfb\u7edf\u5185\u6838\u7248\u672c\ncat \/proc\/version\n\n# \u67e5\u770b\u5f53\u524d\u7528\u6237\u73af\u5883\u53d8\u91cf\nenv\n\ncat \/proc\/cpuinfo\n\n# \u67e5\u770b\u6709\u51e0\u4e2a\u903b\u8f91cpu, \u5305\u62eccpu\u578b\u53f7\ncat \/proc\/cpuinfo | grep name | cut -f2 -d: | uniq -c\n\n# \u67e5\u770b\u6709\u51e0\u9897cpu,\u6bcf\u9897\u5206\u522b\u662f\u51e0\u6838\ncat \/proc\/cpuinfo | grep physical | uniq -c\n\n# \u67e5\u770b\u5f53\u524dCPU\u8fd0\u884c\u572832bit\u8fd8\u662f64bit\u6a21\u5f0f\u4e0b, \u5982\u679c\u662f\u8fd0\u884c\u572832bit\u4e0b\u4e5f\u4e0d\u4ee3\u8868CPU\u4e0d\u652f\u630164bit\ngetconf LONG_BIT\n\n# \u7ed3\u679c\u5927\u4e8e0, \u8bf4\u660e\u652f\u630164bit\u8ba1\u7b97. lm\u6307long mode, \u652f\u6301lm\u5219\u662f64bit\ncat \/proc\/cpuinfo | grep flags | grep ' lm ' | wc -l\n\n<\/code><\/pre>\n
\u5efa\u7acb\u8f6f\u8fde\u63a5<\/h3>\n
ln\u00a0-s\u00a0\/usr\/local\/jdk1.8\/\u00a0jdk\n<\/code><\/pre>\n
rpm\u76f8\u5173<\/h3>\n
#\u00a0\u67e5\u770b\u662f\u5426\u901a\u8fc7rpm\u5b89\u88c5\u4e86\u8be5\u8f6f\u4ef6\nrpm\u00a0-qa\u00a0|\u00a0grep\u00a0\u8f6f\u4ef6\u540d\n<\/code><\/pre>\n
sshkey<\/h3>\n
# \u521b\u5efasshkey\nssh-keygen -t rsa -C your_email@example.com\n\n#id_rsa.pub \u7684\u5185\u5bb9\u62f7\u8d1d\u5230\u8981\u63a7\u5236\u7684\u670d\u52a1\u5668\u7684 home\/username\/.ssh\/authorized_keys \u4e2d,\u5982\u679c\u6ca1\u6709\u5219\u65b0\u5efa(.ssh\u6743\u9650\u4e3a700, authorized_keys\u6743\u9650\u4e3a600)\n<\/code><\/pre>\n
last, \u6700\u8fd1\u767b\u5f55\u4fe1\u606f\u5217\u8868<\/h3>\n
#\u00a0\u6700\u8fd1\u767b\u5f55\u76845\u4e2a\u8d26\u53f7\nlast\u00a0-n\u00a05\n<\/code><\/pre>\n
\u67e5\u770b\u8fdb\u7a0b\u5185\u52a0\u8f7d\u7684\u73af\u5883\u53d8\u91cf<\/h3>\n
\u67e5\u770b\u8fdb\u7a0b\u6811\u627e\u5230\u670d\u52a1\u5668\u8fdb\u7a0b\n<\/code><\/pre>\n
\u67e5\u770b\u8fdb\u7a0b\u542f\u52a8\u8def\u5f84<\/h3>\n
cd\u00a0\/proc\/xxx(\u8fdb\u7a0b\u53f7)\nls\u00a0-all\n#\u00a0cwd\u5bf9\u5e94\u7684\u662f\u542f\u52a8\u8def\u5f84\n<\/code><\/pre>\n
\u6dfb\u52a0\u7528\u6237, \u914d\u7f6esudo\u6743\u9650<\/h3>\n
# \u65b0\u589e\u7528\u6237\nuseradd \u7528\u6237\u540d\npasswd \u7528\u6237\u540d\n\n#\u589e\u52a0sudo\u6743\u9650\nvim \/etc\/sudoers\n# \u4fee\u6539\u6587\u4ef6\u91cc\u9762\u7684\n# root    ALL=(ALL)       ALL\n# \u7528\u6237\u540d ALL=(ALL)       ALL\n<\/code><\/pre>\n
\u5f3a\u5236\u5173\u95ed\u8fdb\u7a0b\u540d\u5305\u542bxxx\u7684\u6240\u6709\u8fdb\u7a0b<\/h3>\n
ps\u00a0aux|grep\u00a0xxx\u00a0|\u00a0grep\u00a0-v\u00a0grep\u00a0|\u00a0awk\u00a0'{print\u00a0$2}'\u00a0|\u00a0xargs\u00a0kill\u00a0-9\n<\/code><\/pre>\n
\u78c1\u76d8,\u6587\u4ef6,\u76ee\u5f55\u76f8\u5173\u64cd\u4f5c<\/h2>\n
vim\u64cd\u4f5c<\/h3>\n
#normal\u6a21\u5f0f\u4e0b g\u8868\u793a\u5168\u5c40, x\u8868\u793a\u67e5\u627e\u7684\u5185\u5bb9, y\u8868\u793a\u66ff\u6362\u540e\u7684\u5185\u5bb9\n:%s\/x\/y\/g\n\n#normal\u6a21\u5f0f\u4e0b\n0  # \u5149\u6807\u79fb\u5230\u884c\u9996(\u6570\u5b570)\n$  # \u5149\u6807\u79fb\u81f3\u884c\u5c3e\nshift + g # \u8df3\u5230\u6587\u4ef6\u6700\u540e\ngg # \u8df3\u5230\u6587\u4ef6\u5934\n\n# \u663e\u793a\u884c\u53f7\n:set nu\n\n# \u53bb\u9664\u884c\u53f7\n:set nonu\n\n# \u68c0\u7d22\n\/xxx(\u68c0\u7d22\u5185\u5bb9)  # \u4ece\u5934\u68c0\u7d22, \u6309n\u67e5\u627e\u4e0b\u4e00\u4e2a\n?xxx(\u68c0\u7d22\u5185\u5bb9)  # \u4ece\u5c3e\u90e8\u68c0\u7d22\n<\/code><\/pre>\n
\u67e5\u770b\u78c1\u76d8, \u6587\u4ef6\u76ee\u5f55\u57fa\u672c\u4fe1\u606f<\/h3>\n
# \u67e5\u770b\u78c1\u76d8\u6302\u8f7d\u60c5\u51b5\nmount\n\n# \u67e5\u770b\u78c1\u76d8\u5206\u533a\u4fe1\u606f\ndf\n\n# \u67e5\u770b\u76ee\u5f55\u53ca\u5b50\u76ee\u5f55\u5927\u5c0f\ndu -H -h\n\n# \u67e5\u770b\u5f53\u524d\u76ee\u5f55\u4e0b\u5404\u4e2a\u6587\u4ef6, \u6587\u4ef6\u5939\u5360\u4e86\u591a\u5c11\u7a7a\u95f4, \u4e0d\u4f1a\u9012\u5f52\ndu -sh *\n<\/code><\/pre>\n
wc\u547d\u4ee4<\/h3>\n
# \u67e5\u770b\u6587\u4ef6\u91cc\u6709\u591a\u5c11\u884c\nwc -l filename\n\n# \u770b\u6587\u4ef6\u91cc\u6709\u591a\u5c11\u4e2aword\nwc -w filename\n\n# \u6587\u4ef6\u91cc\u6700\u957f\u7684\u90a3\u4e00\u884c\u662f\u591a\u5c11\u4e2a\u5b57\nwc -L filename\n\n# \u7edf\u8ba1\u5b57\u8282\u6570\nwc -c\n<\/code><\/pre>\n
\u5e38\u7528\u538b\u7f29, \u89e3\u538b\u7f29\u547d\u4ee4<\/h2>\n
\u538b\u7f29\u547d\u4ee4<\/h3>\n
tar\u00a0czvf\u00a0xxx.tar\u00a0\u538b\u7f29\u76ee\u5f55\nzip\u00a0-r\u00a0xxx.zip\u00a0\u538b\u7f29\u76ee\u5f55\n<\/code><\/pre>\n
\u89e3\u538b\u7f29\u547d\u4ee4<\/h3>\n
tar zxvf xxx.tar\n\n# \u89e3\u538b\u5230\u6307\u5b9a\u6587\u4ef6\u5939\ntar zxvf xxx.tar -C \/xxx\/yyy\/\n\nunzip xxx.zip\n<\/code><\/pre>\n
\u53d8\u66f4\u6587\u4ef6\u6240\u5c5e\u7528\u6237, \u7528\u6237\u7ec4<\/h2>\n
chown\u00a0eagleye.eagleye\u00a0xxx.log\n<\/code><\/pre>\n
cp, scp, mkdir<\/h2>\n
#\u590d\u5236\ncp xxx.log\ncp old.log new.log\n\n# \u590d\u5236\u5e76\u5f3a\u5236\u8986\u76d6\u540c\u540d\u6587\u4ef6\ncp -f xxx.log\n\n# \u590d\u5236\u6587\u4ef6\u5939\ncp -r xxx(\u6e90\u6587\u4ef6\u5939) yyy(\u76ee\u6807\u6587\u4ef6\u5939)\n\n# \u8fdc\u7a0b\u590d\u5236\nscp -P ssh\u7aef\u53e3 username@10.10.10.101:\/home\/username\/xxx \/home\/xxx\n\n# \u7ea7\u8054\u521b\u5efa\u76ee\u5f55\nmkdir -p \/xxx\/yyy\/zzz\n\n# \u6279\u91cf\u521b\u5efa\u6587\u4ef6\u5939, \u4f1a\u5728test,main\u4e0b\u90fd\u521b\u5efajava, resources\u6587\u4ef6\u5939\nmkdir -p src\/{test,main}\/{java,resources}\n<\/code><\/pre>\n
\u68c0\u7d22\u76f8\u5173<\/h2>\n
grep \u6bcf\u5929\u4e00\u4e2aLinux\u547d\u4ee4:grep<\/a><\/p>\n
# \u53cd\u5411\u5339\u914d, \u67e5\u627e\u4e0d\u5305\u542bxxx\u7684\u5185\u5bb9\ngrep -v xxx\n\n# \u6392\u9664\u6240\u6709\u7a7a\u884c\ngrep -v '^\/pre>\n\n# \u8fd4\u56de\u7ed3\u679c 2,\u5219\u8bf4\u660e\u7b2c\u4e8c\u884c\u662f\u7a7a\u884c\ngrep -n \u201c^$\u201d 111.txt    \n\n# \u67e5\u8be2\u4ee5abc\u5f00\u5934\u7684\u884c\ngrep -n \u201c^abc\u201d 111.txt \n\n# \u540c\u65f6\u5217\u51fa\u8be5\u8bcd\u8bed\u51fa\u73b0\u5728\u6587\u7ae0\u7684\u7b2c\u51e0\u884c\ngrep 'xxx' -n xxx.log\n\n# \u8ba1\u7b97\u4e00\u4e0b\u8be5\u5b57\u4e32\u51fa\u73b0\u7684\u6b21\u6570\ngrep 'xxx' -c xxx.log\n\n# \u6bd4\u5bf9\u7684\u65f6\u5019\uff0c\u4e0d\u8ba1\u8f83\u5927\u5c0f\u5199\u7684\u4e0d\u540c\ngrep 'xxx' -i xxx.log\n<\/code><\/pre>\n
awk<\/h2>\n
\u6bcf\u5929\u4e00\u4e2alinux\u547d\u4ee4:awk<\/a><\/p>\n
# \u4ee5':' \u4e3a\u5206\u9694\u7b26,\u5982\u679c\u7b2c\u4e94\u57df\u6709user\u5219\u8f93\u51fa\u8be5\u884c\nawk -F ':' '{if (5 ~ \/user\/) print<\/span>0}' \/etc\/passwd \n\n# \u7edf\u8ba1\u5355\u4e2a\u6587\u4ef6\u4e2d\u67d0\u4e2a\u5b57\u7b26\uff08\u4e32\uff09(\u4e2d\u6587\u65e0\u6548)\u51fa\u73b0\u7684\u6b21\u6570\nawk -v RS='character' 'END {print --NR}' xxx.txt\n<\/code><\/pre>\n
find\u68c0\u7d22\u547d\u4ee4<\/h2>\n
\u6bcf\u5929\u5b66\u4e00\u4e2a Linux \u547d\u4ee4\uff0820\uff09\uff1afind<\/a><\/p>\n
# \u5728\u76ee\u5f55\u4e0b\u627e\u540e\u7f00\u662f.mysql\u7684\u6587\u4ef6\nfind \/home\/eagleye -name '*.mysql' -print\n\n# \u4f1a\u4ece \/usr \u76ee\u5f55\u5f00\u59cb\u5f80\u4e0b\u627e\uff0c\u627e\u6700\u8fd13\u5929\u4e4b\u5185\u5b58\u53d6\u8fc7\u7684\u6587\u4ef6\u3002\nfind \/usr -atime 3 \u2013print\n\n# \u4f1a\u4ece \/usr \u76ee\u5f55\u5f00\u59cb\u5f80\u4e0b\u627e\uff0c\u627e\u6700\u8fd15\u5929\u4e4b\u5185\u4fee\u6539\u8fc7\u7684\u6587\u4ef6\u3002\nfind \/usr -ctime 5 \u2013print\n\n# \u4f1a\u4ece \/doc \u76ee\u5f55\u5f00\u59cb\u5f80\u4e0b\u627e\uff0c\u627ejacky \u7684\u3001\u6587\u4ef6\u540d\u5f00\u5934\u662f j\u7684\u6587\u4ef6\u3002  \nfind \/doc -user jacky -name 'j*' \u2013print\n\n# \u4f1a\u4ece \/doc \u76ee\u5f55\u5f00\u59cb\u5f80\u4e0b\u627e\uff0c\u627e\u5bfb\u6587\u4ef6\u540d\u662f ja \u5f00\u5934\u6216\u8005 ma\u5f00\u5934\u7684\u6587\u4ef6\u3002\nfind \/doc \\( -name 'ja*' -o- -name 'ma*' \\) \u2013print\n\n#  \u4f1a\u4ece \/doc \u76ee\u5f55\u5f00\u59cb\u5f80\u4e0b\u627e\uff0c\u627e\u5230\u51e1\u662f\u6587\u4ef6\u540d\u7ed3\u5c3e\u4e3a bak\u7684\u6587\u4ef6\uff0c\u628a\u5b83\u5220\u9664\u6389\u3002-exec \u9009\u9879\u662f\u6267\u884c\u7684\u610f\u601d\uff0crm \u662f\u5220\u9664\u547d\u4ee4\uff0c{ } \u8868\u793a\u6587\u4ef6\u540d\uff0c\u201c\\;\u201d\u662f\u89c4\u5b9a\u7684\u547d\u4ee4\u7ed3\u5c3e\u3002 \nfind \/doc -name '*bak' -exec rm {} \\;\n\n#\u67e5\u627e\u5f53\u524d\u76ee\u5f55\u4e0b\u6587\u4ef6\u5927\u5c0f\u8d85\u8fc7500M\u7684\u6587\u4ef6\nfind . -type f -size +500M   \n<\/code><\/pre>\n
\u76d1\u63a7linux\u6027\u80fd\u547d\u4ee4<\/h2>\n
top<\/h3>\n
\u6309\u5927\u5199\u7684 F \u6216 O \u952e\uff0c\u7136\u540e\u6309 a-z \u53ef\u4ee5\u5c06\u8fdb\u7a0b\u6309\u7167\u76f8\u5e94\u7684\u5217\u8fdb\u884c\u6392\u5e8f, \u7136\u540e\u56de\u8f66\u3002\u800c\u5927\u5199\u7684 R \u952e\u53ef\u4ee5\u5c06\u5f53\u524d\u7684\u6392\u5e8f\u5012\u8f6c\u3002\u6bcf\u5929\u5b66\u4e00\u4e2a Linux \u547d\u4ee4\uff0848\uff09\uff1atop<\/a><\/p>\n
PID \u8fdb\u7a0bid\nPPID \u7236\u8fdb\u7a0bid\nRUSER Real user name\nUID \u8fdb\u7a0b\u6240\u6709\u8005\u7684\u7528\u6237id\nUSER \u8fdb\u7a0b\u6240\u6709\u8005\u7684\u7528\u6237\u540d\nGROUP \u8fdb\u7a0b\u6240\u6709\u8005\u7684\u7ec4\u540d\nTTY \u542f\u52a8\u8fdb\u7a0b\u7684\u7ec8\u7aef\u540d\u3002\u4e0d\u662f\u4ece\u7ec8\u7aef\u542f\u52a8\u7684\u8fdb\u7a0b\u5219\u663e\u793a\u4e3a ?\nPR \u4f18\u5148\u7ea7\nNI nice\u503c\u3002\u8d1f\u503c\u8868\u793a\u9ad8\u4f18\u5148\u7ea7\uff0c\u6b63\u503c\u8868\u793a\u4f4e\u4f18\u5148\u7ea7\nP \u6700\u540e\u4f7f\u7528\u7684CPU\uff0c\u4ec5\u5728\u591aCPU\u73af\u5883\u4e0b\u6709\u610f\u4e49\n%CPU \u4e0a\u6b21\u66f4\u65b0\u5230\u73b0\u5728\u7684CPU\u65f6\u95f4\u5360\u7528\u767e\u5206\u6bd4\nTIME \u8fdb\u7a0b\u4f7f\u7528\u7684CPU\u65f6\u95f4\u603b\u8ba1\uff0c\u5355\u4f4d\u79d2\nTIME+ \u8fdb\u7a0b\u4f7f\u7528\u7684CPU\u65f6\u95f4\u603b\u8ba1\uff0c\u5355\u4f4d1\/100\u79d2\n%MEM \u8fdb\u7a0b\u4f7f\u7528\u7684\u7269\u7406\u5185\u5b58\u767e\u5206\u6bd4\nVIRT \u8fdb\u7a0b\u4f7f\u7528\u7684\u865a\u62df\u5185\u5b58\u603b\u91cf\uff0c\u5355\u4f4dkb\u3002VIRT=SWAP+RES\nSWAP \u8fdb\u7a0b\u4f7f\u7528\u7684\u865a\u62df\u5185\u5b58\u4e2d\uff0c\u88ab\u6362\u51fa\u7684\u5927\u5c0f\uff0c\u5355\u4f4dkb\u3002\nRES \u8fdb\u7a0b\u4f7f\u7528\u7684\u3001\u672a\u88ab\u6362\u51fa\u7684\u7269\u7406\u5185\u5b58\u5927\u5c0f\uff0c\u5355\u4f4dkb\u3002RES=CODE+DATA\nCODE \u53ef\u6267\u884c\u4ee3\u7801\u5360\u7528\u7684\u7269\u7406\u5185\u5b58\u5927\u5c0f\uff0c\u5355\u4f4dkb\nDATA \u53ef\u6267\u884c\u4ee3\u7801\u4ee5\u5916\u7684\u90e8\u5206(\u6570\u636e\u6bb5+\u6808)\u5360\u7528\u7684\u7269\u7406\u5185\u5b58\u5927\u5c0f\uff0c\u5355\u4f4dkb\nSHR \u5171\u4eab\u5185\u5b58\u5927\u5c0f\uff0c\u5355\u4f4dkb\nnFLT \u9875\u9762\u9519\u8bef\u6b21\u6570\nnDRT \u6700\u540e\u4e00\u6b21\u5199\u5165\u5230\u73b0\u5728\uff0c\u88ab\u4fee\u6539\u8fc7\u7684\u9875\u9762\u6570\u3002\nS \u8fdb\u7a0b\u72b6\u6001\u3002D=\u4e0d\u53ef\u4e2d\u65ad\u7684\u7761\u7720\u72b6\u6001,R=\u8fd0\u884c,S=\u7761\u7720,T=\u8ddf\u8e2a\/\u505c\u6b62,Z=\u50f5\u5c38\u8fdb\u7a0b\nCOMMAND \u547d\u4ee4\u540d\/\u547d\u4ee4\u884c\nWCHAN \u82e5\u8be5\u8fdb\u7a0b\u5728\u7761\u7720\uff0c\u5219\u663e\u793a\u7761\u7720\u4e2d\u7684\u7cfb\u7edf\u51fd\u6570\u540d\nFlags \u4efb\u52a1\u6807\u5fd7\uff0c\u53c2\u8003 sched.h\n<\/code><\/pre>\n
iostat,\u78c1\u76d8IO\u60c5\u51b5\u76d1\u63a7<\/h3>\n
iostat -xz 1\n\n# r\/s, w\/s, rkB\/s, wkB\/s\uff1a\u5206\u522b\u8868\u793a\u6bcf\u79d2\u8bfb\u5199\u6b21\u6570\u548c\u6bcf\u79d2\u8bfb\u5199\u6570\u636e\u91cf\uff08\u5343\u5b57\u8282\uff09\u3002\u8bfb\u5199\u91cf\u8fc7\u5927\uff0c\u53ef\u80fd\u4f1a\u5f15\u8d77\u6027\u80fd\u95ee\u9898\u3002\n# await\uff1aIO\u64cd\u4f5c\u7684\u5e73\u5747\u7b49\u5f85\u65f6\u95f4\uff0c\u5355\u4f4d\u662f\u6beb\u79d2\u3002\u8fd9\u662f\u5e94\u7528\u7a0b\u5e8f\u5728\u548c\u78c1\u76d8\u4ea4\u4e92\u65f6\uff0c\u9700\u8981\u6d88\u8017\u7684\u65f6\u95f4\uff0c\u5305\u62ecIO\u7b49\u5f85\u548c\u5b9e\u9645\u64cd\u4f5c\u7684\u8017\u65f6\u3002\u5982\u679c\u8fd9\u4e2a\u6570\u503c\u8fc7\u5927\uff0c\u53ef\u80fd\u662f\u786c\u4ef6\u8bbe\u5907\u9047\u5230\u4e86\u74f6\u9888\u6216\u8005\u51fa\u73b0\u6545\u969c\u3002\n# avgqu-sz\uff1a\u5411\u8bbe\u5907\u53d1\u51fa\u7684\u8bf7\u6c42\u5e73\u5747\u6570\u91cf\u3002\u5982\u679c\u8fd9\u4e2a\u6570\u503c\u5927\u4e8e1\uff0c\u53ef\u80fd\u662f\u786c\u4ef6\u8bbe\u5907\u5df2\u7ecf\u9971\u548c\uff08\u90e8\u5206\u524d\u7aef\u786c\u4ef6\u8bbe\u5907\u652f\u6301\u5e76\u884c\u5199\u5165\uff09\u3002\n# %util\uff1a\u8bbe\u5907\u5229\u7528\u7387\u3002\u8fd9\u4e2a\u6570\u503c\u8868\u793a\u8bbe\u5907\u7684\u7e41\u5fd9\u7a0b\u5ea6\uff0c\u7ecf\u9a8c\u503c\u662f\u5982\u679c\u8d85\u8fc760\uff0c\u53ef\u80fd\u4f1a\u5f71\u54cdIO\u6027\u80fd\uff08\u53ef\u4ee5\u53c2\u7167IO\u64cd\u4f5c\u5e73\u5747\u7b49\u5f85\u65f6\u95f4\uff09\u3002\u5982\u679c\u5230\u8fbe100%\uff0c\u8bf4\u660e\u786c\u4ef6\u8bbe\u5907\u5df2\u7ecf\u9971\u548c\u3002\n# \u5982\u679c\u663e\u793a\u7684\u662f\u903b\u8f91\u8bbe\u5907\u7684\u6570\u636e\uff0c\u90a3\u4e48\u8bbe\u5907\u5229\u7528\u7387\u4e0d\u4ee3\u8868\u540e\u7aef\u5b9e\u9645\u7684\u786c\u4ef6\u8bbe\u5907\u5df2\u7ecf\u9971\u548c\u3002\u503c\u5f97\u6ce8\u610f\u7684\u662f\uff0c\u5373\u4f7fIO\u6027\u80fd\u4e0d\u7406\u60f3\uff0c\u4e5f\u4e0d\u4e00\u5b9a\u610f\u5473\u8fd9\u5e94\u7528\u7a0b\u5e8f\u6027\u80fd\u4f1a\u4e0d\u597d\uff0c\u53ef\u4ee5\u5229\u7528\u8bf8\u5982\u9884\u8bfb\u53d6\u3001\u5199\u7f13\u5b58\u7b49\u7b56\u7565\u63d0\u5347\u5e94\u7528\u6027\u80fd\u3002\n<\/code><\/pre>\n
free,\u5185\u5b58\u4f7f\u7528\u60c5\u51b5<\/h2>\n
free -m\n\neg:\n\n     total       used       free     shared    buffers     cached\nMem:          1002        769        232          0         62        421\n-\/+ buffers\/cache:          286        715\nSwap:          1153          0       1153\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"
\u57fa\u672c\u64cd\u4f5c Linux \u5173\u673a,\u91cd\u542f #\u00a0\u5173\u673a shutdown\u00a0-h\u00a0now #\u00a0\u91cd\u542f\u65b9\u5f0f1 shutdown\u00a0 … \u7ee7\u7eed\u9605\u8bfbLinux\u547d\u4ee4\u5927\u5168<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"aside","meta":[],"categories":[74],"tags":[10],"_links":{"self":[{"href":"https:\/\/www.cgh0610.cn\/index.php?rest_route=\/wp\/v2\/posts\/255"}],"collection":[{"href":"https:\/\/www.cgh0610.cn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.cgh0610.cn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.cgh0610.cn\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.cgh0610.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=255"}],"version-history":[{"count":2,"href":"https:\/\/www.cgh0610.cn\/index.php?rest_route=\/wp\/v2\/posts\/255\/revisions"}],"predecessor-version":[{"id":257,"href":"https:\/\/www.cgh0610.cn\/index.php?rest_route=\/wp\/v2\/posts\/255\/revisions\/257"}],"wp:attachment":[{"href":"https:\/\/www.cgh0610.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=255"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.cgh0610.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=255"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.cgh0610.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=255"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}