![\"\"](\"https:\/\/www.linuxmi.com\/wp-content\/uploads\/2020\/06\/1-1-1.png\")
<\/p>\nLinux\u7684\u6d69\u701a\u65e0\u57a0\uff0c\u4f7f\u4eba\u603b\u80fd\u6bcf\u6b21\u90fd\u63d0\u4ea4\u4e0e\u4f17\u4e0d\u540c\u7684\u5185\u5bb9\u3002\u8fd9\u4e9b\u5185\u5bb9\u4e0d\u4ec5\u5bf9\u4ed6\u4eec\u7684\u804c\u4e1a\u751f\u6daf\u5f88\u6709\u7528\uff0c\u540c\u65f6\u4e5f\u8ba9\u4ed6\u4eec\u589e\u957f\u77e5\u8bc6\u3002\u5728\u6b64\uff0c\u6211\u4eec\u5c31\u5c1d\u8bd5\u8fd9\u4e48\u53bb\u505a\uff0c\u81f3\u4e8e\u80fd\u53d6\u5f97\u591a\u5927\u7684\u6210\u529f\uff0c\u5c31\u7531\u6211\u4eec\u7684\u8bfb\u8005\u670b\u53cb\u4eec\u6765\u5224\u65ad\u5427\u3002<\/p>\n
\u5728\u6b64\uff0c\u4f5c\u4e3ashell\u811a\u672c\u7684\u9644\u52a0\u5185\u5bb9\uff0c\u5728\u672c\u6587\u4e2d\u6211\u4eec\u5c06\u4ece\u9762\u8bd5\u7684\u89d2\u5ea6\u89e3\u8bfb\u4e0eLinux Shell\u76f8\u5173\u7684\u95ee\u9898\u3002<\/p>\n
1. \u5728shell\u811a\u672c\u6210\u529f\u6267\u884c\u524d\uff0c\u5982\u4f55\u4e2d\u65ad\u811a\u672c\u6267\u884c\uff1f<\/p>\n
\u89e3\u7b54\uff1a\u6211\u4eec\u9700\u8981\u4f7f\u7528\u2018exit\u2019\u547d\u4ee4\u6765\u5b9e\u73b0\u4ee5\u4e0a\u63cf\u8ff0\u7684\u60c5\u5883\u3002\u2018exit\u2019\u547d\u4ee4\u88ab\u5f3a\u5236\u8f93\u51fa\u975e0\u503c\u65f6\uff0c\u811a\u672c\u4f1a\u62a5\u9519\u5e76\u9000\u51fa\u3002\u5728Unix\u73af\u5883\u4e0b\u7684shell\u811a\u672c\u4e2d\uff0c0\u503c\u8868\u793a\u6210\u529f\u6267\u884c\u3002\u56e0\u6b64\uff0c\u5728\u811a\u672c\u7ec8\u6b62\u524d\u6267\u884c\u4e00\u4e2a\u4e0d\u5e26\u5f15\u53f7\u7684\u2018exit -1\u2019\u547d\u4ee4\u5c06\u4f7f\u811a\u672c\u4e2d\u6b62\u3002<\/p>\n
\u4f8b\u5982\uff0c\u521b\u5efa\u4ee5\u4e0b\u4e00\u4e2a\u540d\u4e3a\u201clinuxmi.sh\u201d\u7684\u811a\u672c\u3002<\/p>\n
#!\/bin\/bash<\/p>\n
echo “Hello”<\/p>\n
exit-1<\/p>\n
echo “bye”<\/p>\n
\u4fdd\u5b58\u6587\u4ef6\u5e76\u6267\u884c\u3002<\/p>\n
# sh linuxmi.sh<\/p>\n
Hello<\/p>\n
linuxmi.sh:\u884c3: exit-1: \u672a\u627e\u5230\u547d\u4ee4<\/p>\n
bye<\/p>\n
<\/p>\n
\u4ece\u4e0a\u9762\u7684\u811a\u672c\u4e2d\u53ef\u4ee5\u6e05\u695a\u5730\u770b\u5230\uff0c\u5728exit -1\u547d\u4ee4\u524d\uff0c\u811a\u672c\u6267\u884c\u5f97\u5f88\u597d\u3002<\/p>\n
2. \u5982\u4f55\u4f7f\u7528Linux\u547d\u4ee4\u6765\u79fb\u9664\u6587\u4ef6\u5934\uff1f<\/p>\n
\u89e3\u7b54\uff1a\u5f53\u6211\u4eec\u9700\u8981\u5220\u9664\u6587\u4ef6\u4e2d\u7684\u6307\u5b9a\u884c\u65f6\uff0c\u2018sed\u2019\u547d\u4ee4\u53ef\u4ee5\u7528\u6765\u89e3\u51b3\u8be5\u95ee\u9898\u3002<\/p>\n
\u8fd9\u4e2a\u662f\u7528\u6765\u5220\u9664\u6587\u4ef6\u5934\uff08\u6587\u4ef6\u7684\u9996\u884c\uff09\u7684\u6b63\u786e\u547d\u4ee4\u3002<\/p>\n
# sed ‘1 d’ file.txt<\/p>\n
\u4e0a\u9762\u547d\u4ee4\u7684\u95ee\u9898\u662f\uff0c\u5b83\u4f1a\u5728\u6807\u51c6\u8f93\u51fa\u8bbe\u5907\u4e0a\u8f93\u51fa\u4e0d\u5e26\u9996\u884c\u7684\u6587\u4ef6\u5185\u5bb9\u3002\u4e3a\u4e86\u4fdd\u5b58\u8f93\u51fa\u5230\u6587\u4ef6\uff0c\u6211\u4eec\u9700\u8981\u4f7f\u7528\u91cd\u5b9a\u5411\u64cd\u4f5c\u7b26\uff0c\u5b83\u5c06\u5e2e\u52a9\u4f60\u5c06\u8f93\u51fa\u91cd\u5b9a\u5411\u5230\u6587\u4ef6\u3002<\/p>\n
# sed ‘1 d’ file.txt > new_file.txt<\/p>\n
\u597d\u5427\uff0c\u5176\u5b9esed\u547d\u4ee4\u5185\u5efa\u7684\u2018-i\u2019\u5f00\u5173\u5c31\u53ef\u4ee5\u5e72\u8fd9\u6d3b\uff0c\u5c31\u4e0d\u9700\u8981\u91cd\u5b9a\u5411\u7b26\u4e86\u5427\u3002<\/p>\n
# sed -i ‘1 d’ file.txt<\/p>\n
3. \u4f60\u600e\u4e48\u68c0\u67e5\u4e00\u4e2a\u6587\u672c\u6587\u4ef6\u4e2d\u67d0\u4e00\u884c\u7684\u957f\u5ea6\uff1f<\/p>\n
\u89e3\u7b54\uff1a\u2018sed\u2019\u547d\u4ee4\u4e5f\u53ef\u4ee5\u7528\u6765\u67e5\u627e\u6587\u672c\u6587\u4ef6\u4e2d\u7684\u67d0\u4e00\u884c\u6216\u8005\u68c0\u67e5\u5176\u957f\u5ea6\u3002<\/p>\n
\u2018sed -n \u2018n p\u2019 file.txt\u2019\u53ef\u4ee5\u89e3\u51b3\uff0c\u8fd9\u91cc\u2018n\u2019\u8868\u793a\u884c\u53f7\uff0c\u2018p\u2019\u6253\u5370\u51fa\u5339\u914d\u5185\u5bb9\uff08\u5230\u6807\u51c6\u8f93\u51fa\uff09\uff0c\u8be5\u547d\u4ee4\u901a\u5e38\u4e0e-n\u547d\u4ee4\u884c\u9009\u9879\u8fde\u7528\u3002\u90a3\u4e48\uff0c\u600e\u6837\u6765\u83b7\u53d6\u957f\u5ea6\u8ba1\u6570\u5462\uff1f\u5f88\u660e\u663e\uff0c\u6211\u4eec\u9700\u8981\u901a\u8fc7\u7ba1\u9053\u8f93\u51fa\u7ed9\u2018wc\u2019\u547d\u4ee4\u6765\u8ba1\u7b97\u3002<\/p>\n
# sed \u2013n ‘n p’ file.txt | wc \u2013c<\/p>\n
\u8981\u5f97\u5230\u6587\u672c\u6587\u4ef6\u2018linuxmi.txt\u2019\u7684\u7b2c\u4e94\u884c\u7684\u957f\u5ea6\uff0c\u8fd0\u884c\u5982\u4e0b\u547d\u4ee4\uff1a<\/p>\n
# sed -n ‘5 p’ linuxmi.txt | wc -c<\/p>\n
![\"\"](\"https:\/\/www.linuxmi.com\/wp-content\/uploads\/2020\/06\/1-2-1.png\")
<\/p>\n
4. \u53ef\u4ee5\u5728Linux\u7cfb\u7edf\u4e0a\u67e5\u770b\u5230\u6240\u6709\u975e\u6253\u5370\u5b57\u7b26\u5417\uff1f\u4f60\u662f\u600e\u4e48\u505a\u5230\u7684\uff1f<\/p>\n
\u89e3\u7b54\uff1a\u53ef\u4ee5\u3002\u53ef\u4ee5\u5728Linux\u4e2d\u67e5\u770b\u6240\u6709\u7684\u975e\u6253\u5370\u5b57\u7b26\u3002\u8981\u5b9e\u73b0\u4e0a\u9762\u6240\u8bb2\u7684\u65b9\u6848\uff0c\u6211\u4eec\u9700\u8981\u2018vi\u2019\u7f16\u8f91\u5668\u7684\u5e2e\u52a9\u3002\u600e\u6837\u5728\u2018vi\u2019\u7f16\u8f91\u5668\u4e2d\u663e\u793a\u975e\u6253\u5370\u5b57\u7b26\uff1f<\/p>\n
\u6253\u5f00vi\u7f16\u8f91\u5668\u3002<\/p>\n
\u5148\u6309[esc]\u952e\uff0c\u7136\u540e\u6309\u2018\uff1a\u2019\u8fdb\u5165\u5230vi\u7f16\u8f91\u5668\u7684\u547d\u4ee4\u6a21\u5f0f\u3002<\/p>\n
\u6700\u540e\uff0c\u4ece\u2018vi\u2019\u7f16\u8f91\u5668\u7684\u547d\u4ee4\u754c\u9762\u8f93\u5165set list\u547d\u4ee4\u5e76\u6267\u884c\u3002<\/p>\n
\u6ce8: \u8fd9\u79cd\u65b9\u5f0f\u53ef\u4ee5\u67e5\u770b\u6587\u672c\u6587\u4ef6\u4e2d\u7684\u6240\u6709\u975e\u6253\u5370\u5b57\u7b26\uff0c\u5305\u62ecctrl+m\uff08^M\uff09\u3002<\/p>\n
5. \u5047\u5982\u4f60\u662f\u4e00\u4e2a\u5458\u5de5\u7ec4\u7684\u56e2\u961f\u9886\u5bfc\uff0c\u4e3axyz\u516c\u53f8\u5de5\u4f5c\u3002\u516c\u53f8\u8981\u6c42\u4f60\u521b\u5efa\u4e00\u4e2a\u2018dir_xyz\u2019\u76ee\u5f55\uff0c\u8ba9\u8be5\u7ec4\u6210\u5458\u90fd\u80fd\u5728\u8be5\u76ee\u5f55\u4e0b\u521b\u5efa\u6216\u8bbf\u95ee\u6587\u4ef6\uff0c\u4f46\u662f\u9664\u4e86\u6587\u4ef6\u521b\u5efa\u8005\u4e4b\u5916\u7684\u5176\u4ed6\u4eba\u4e0d\u80fd\u5220\u9664\u6587\u4ef6\uff0c\u4f60\u4f1a\u600e\u4e48\u505a\uff1f<\/p>\n
\u89e3\u7b54\uff1a\u8fd9\u771f\u662f\u4e2a\u6709\u8da3\u7684\u5de5\u4f5c\u65b9\u6848\u3002\u597d\u5427\uff0c\u4e0a\u9762\u6240\u8bb2\u7684\u65b9\u6848\uff0c\u6211\u4eec\u9700\u8981\u901a\u8fc7\u4e0b\u9762\u7684\u6b65\u9aa4\u6765\u5b9e\u65bd\uff0c\u8fd9\u7b80\u76f4\u5c31\u662f\u5c0f\u83dc\u4e00\u789f\u3002<\/p>\n
# mkdir dir_xyz<\/p>\n
# chmod g+wx dir_xyz<\/p>\n
# chmod +t dir_xyz<\/p>\n
\u7b2c\u4e00\u884c\u547d\u4ee4\u521b\u5efa\u4e86\u4e00\u4e2a\u76ee\u5f55\uff08dir_xyz\uff09\uff0c\u4e0a\u9762\u7684\u7b2c\u4e8c\u884c\u547d\u4ee4\u8ba9\u7ec4\uff08g\uff09\u5177\u6709\u2018\u5199\u2019\u548c\u2018\u6267\u884c\u2019\u7684\u6743\u9650\uff0c\u800c\u4e0a\u9762\u7684\u6700\u540e\u4e00\u884c\u547d\u4ee4\u2014\u2014\u6743\u9650\u4f4d\u6700\u540e\u7684\u2018+t\u2019\u662f\u2018\u7c98\u6ede\u4f4d\u2019\uff0c\u5b83\u7528\u6765\u66ff\u6362\u2018x\u2019\uff0c\u8868\u660e\u5728\u8fd9\u4e2a\u76ee\u5f55\u4e2d\uff0c\u6587\u4ef6\u53ea\u80fd\u88ab\u5b83\u4eec\u7684\u62e5\u6709\u8005\u3001\u76ee\u5f55\u7684\u62e5\u6709\u8005\u6216\u8005\u662f\u8d85\u7ea7\u7528\u6237root\u5220\u9664\u3002<\/p>\n
6. \u4f60\u80fd\u544a\u8bc9\u6211\u4e00\u4e2aLinux\u8fdb\u7a0b\u7ecf\u5386\u7684\u5404\u4e2a\u9636\u6bb5\u5417\uff1f<\/p>\n
\u89e3\u7b54\uff1a\u4e00\u4e2aLinux\u8fdb\u7a0b\u5728\u5b83\u7684\u4e00\u751f\u4e2d\uff0c\u901a\u5e38\u7ecf\u5386\u4e86\u56db\u4e2a\u4e3b\u8981\u9636\u6bb5\u3002<\/p>\n
\u8fd9\u91cc\u662fLinux\u8fdb\u7a0b\u8981\u7ecf\u5386\u7684\u56db\u4e2a\u9636\u6bb5\u3002<\/p>\n
\u7b49\u5f85\uff1aLinux\u8fdb\u7a0b\u7b49\u5f85\u8d44\u6e90\u3002<\/p>\n
\u8fd0\u884c\uff1aLinux\u8fdb\u7a0b\u5f53\u524d\u6b63\u5728\u6267\u884c\u4e2d\u3002<\/p>\n
\u505c\u6b62\uff1aLinux\u8fdb\u7a0b\u5728\u6210\u529f\u6267\u884c\u540e\u6216\u6536\u5230\u6740\u6b7b\u8fdb\u7a0b\u4fe1\u53f7\u540e\u505c\u6b62\u3002<\/p>\n
\u50f5\u5c38\uff1a\u5982\u679c\u8be5\u8fdb\u7a0b\u5df2\u7ecf\u7ed3\u675f\uff0c\u4f46\u4ecd\u7136\u7559\u5728\u8fdb\u7a0b\u8868\u4e2d\uff0c\u88ab\u79f0\u4e3a\u2018\u50f5\u5c38\u2019\u3002<\/p>\n
7. Linux\u4e2dcut\u547d\u4ee4\u600e\u4e48\u7528\uff1f<\/p>\n
\u89e3\u7b54\uff1a\u2018cut\u2019\u662f\u4e00\u4e2a\u5f88\u6709\u7528\u7684Linux\u547d\u4ee4\uff0c\u5f53\u6211\u4eec\u8981\u622a\u53d6\u6587\u4ef6\u7684\u6307\u5b9a\u90e8\u5206\u5e76\u6253\u5370\u5230\u6807\u51c6\u8f93\u51fa\uff0c\u5f53\u6587\u672c\u533a\u57df\u4ee5\u53ca\u6587\u4ef6\u672c\u8eab\u5f88\u5927\u65f6\uff0c\u8fd9\u4e2a\u547d\u4ee4\u5f88\u6709\u7528\u3002<\/p>\n
\u4f8b\u5982\uff0c\u622a\u53d6\u2018txt_linuxmi\u2019\u6587\u4ef6\u7684\u524d10\u5217\u3002<\/p>\n
# cut -c1-10 txt_linuxmi<\/p>\n
\u8981\u622a\u53d6\u8be5\u6587\u4ef6\u4e2d\u7684\u7b2c\u4e8c\uff0c\u7b2c\u4e94\u548c\u7b2c\u4e03\u5217\u3002<\/p>\n
# cut -d;-f2 -f5 -f7 txt_linuxmi<\/p>\n
8. \u2018cmp\u2019\u548c\u2018diff\u2019\u547d\u4ee4\u7684\u533a\u522b\u662f\u4ec0\u4e48\uff1f<\/p>\n
\u89e3\u7b54\uff1a\u2018cmp\u2019\u548c\u2018diff\u2019\u547d\u4ee4\u7528\u6765\u83b7\u53d6\u76f8\u540c\u7684\u4e1c\u897f\uff0c\u4f46\u5404\u6709\u4fa7\u91cd\u3002<\/p>\n
\u2018diff\u2019\u547d\u4ee4\u8f93\u51fa\u4e3a\u4e86\u4f7f\u4e24\u4e2a\u6587\u4ef6\u4e00\u6837\u800c\u5e94\u8be5\u505a\u7684\u4fee\u6539\u3002\u800c\u2018cmp\u2019\u547d\u4ee4\u5219\u5c06\u4e24\u4e2a\u6587\u4ef6\u9010\u5b57\u8282\u5bf9\u6bd4\uff0c\u5e76\u62a5\u544a\u7b2c\u4e00\u4e2a\u4e0d\u5339\u914d\u7684\u9879\u3002<\/p>\n
9. \u53ef\u4ee5\u7528\u2018echo\u2019\u547d\u4ee4\u6765\u66ff\u6362\u2018ls\u2019\u547d\u4ee4\u5417\uff1f<\/p>\n
\u89e3\u7b54\uff1a\u53ef\u4ee5\u7684\u3002\u2018ls\u2019\u547d\u4ee4\u53ef\u4ee5\u7528\u2018echo\u2019\u547d\u4ee4\u6765\u66ff\u4ee3\u3002\u2018ls\u2019\u547d\u4ee4\u5217\u51fa\u76ee\u5f55\u5185\u5bb9\uff0c\u4ece\u66ff\u6362\u4e0a\u8ff0\u547d\u4ee4\u7684\u89d2\u5ea6\u8bb2\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u2018echo *\u2019\uff0c\u4e24\u4e2a\u547d\u4ee4\u7684\u8f93\u51fa\u5b8c\u5168\u4e00\u6837\u3002<\/p>\n
10. \u4f60\u53ef\u80fd\u542c\u8fc7inode\u5427\u3002\u4f60\u80fd\u7b80\u8981\u63cf\u8ff0\u4e00\u4e0binode\u5417\uff1f<\/p>\n
\u89e3\u7b54\uff1a\u2018inode\u2019\u662f\u4e00\u4e2a\u2018\u6570\u636e\u7ed3\u6784\u2019\uff0c\u5728Linux\u4e0a\u7528\u4e8e\u6587\u4ef6\u6807\u8bc6\u3002\u6bcf\u4e2a\u6587\u4ef6\u5728Unix\u7cfb\u7edf\u4e0a\u6709\u4e00\u4e2a\u72ec\u7acb\u7684\u2018inode\u2019\u548c\u4e00\u4e2a\u2018\u552f\u4e00\u7684\u2019inode\u53f7\u3002<\/p>\n
OK\uff0c\u672c\u6587\u5c31\u8fd9\u6837\u5427\uff0c\u5728\u4ee5\u540e\u7684\u6587\u7ae0\u5fe0\uff0c\u6211\u4eec\u5c06\u8ba8\u8bba\u53e6\u5916\u4e00\u4e9b\u6709\u8da3\u5473\u6027\u800c\u53c8\u6709\u77e5\u8bc6\u6027\u7684\u9762\u8bd5\u95ee\u9898\u3002\u66f4\u591a\u77e5\u8bc6\u8bf7\u5173\u6ce8Linux\u516c\u793e\u5fae\u4fe1\u516c\u4f17\u53f7\uff0c\u522b\u5fd8\u4e86\u5728\u4e0b\u9762\u7684\u8bc4\u8bba\u90e8\u5206\u7ed9\u6211\u4eec\u63d0\u4f9b\u4e00\u4e9b\u6709\u4ef7\u503c\u7684\u53cd\u9988\u54e6\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
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