{"id":16689,"date":"2024-11-18T10:45:06","date_gmt":"2024-11-18T02:45:06","guid":{"rendered":"https:\/\/fwq.ai\/blog\/16689\/"},"modified":"2024-11-18T10:45:06","modified_gmt":"2024-11-18T02:45:06","slug":"linux-shell%e8%84%9a%e6%9c%ac%e7%9a%8410%e4%b8%aa%e6%9c%89%e7%94%a8%e7%9a%84%e9%9d%a2%e8%af%95%e9%97%ae%e9%a2%98%e5%92%8c%e8%a7%a3%e7%ad%94","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/16689\/","title":{"rendered":"Linux Shell\u811a\u672c\u768410\u4e2a\u6709\u7528\u7684\u201c\u9762\u8bd5\u95ee\u9898\u548c\u89e3\u7b54\u201d"},"content":{"rendered":"

<\/p>\n

Linux\u7684\u6d69\u701a<\/span>\u65e0\u57a0\uff0c\u4f7f\u4eba\u603b\u80fd\u6bcf\u6b21\u90fd\u63d0\u4ea4\u4e0e\u4f17\u4e0d\u540c\u7684\u5185\u5bb9\u3002<\/span>\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<\/span>\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<\/span><\/p>\n

\u5728\u6b64\uff0c\u4f5c\u4e3a\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<\/span>
\n1. \u5728shell\u811a\u672c\u6210\u529f\u6267\u884c\u524d\uff0c\u5982\u4f55\u4e2d\u65ad\u811a\u672c\u6267\u884c\uff1f<\/span>
\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<\/span>
\n\u4f8b\u5982\uff0c\u521b\u5efa\u4ee5\u4e0b\u4e00\u4e2a\u540d\u4e3a\u201clinuxmi.sh\u201d\u7684\u811a\u672c\u3002<\/span> <\/p>\n

#!\/bin\/bash\necho \"Hello\"\nexit-1\necho \"bye\"<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236
\n\u4fdd\u5b58\u6587\u4ef6\u5e76\u6267\u884c\uff1a<\/span>
\n\"Linux
\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<\/span>
\n2. \u5982\u4f55\u4f7f\u7528Linux\u547d\u4ee4\u6765\u79fb\u9664\u6587\u4ef6\u5934\uff1f<\/span>
\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<\/span>
\n\u8fd9\u4e2a\u662f\u7528\u6765\u5220\u9664\u6587\u4ef6\u5934\uff08\u6587\u4ef6\u7684\u9996\u884c\uff09\u7684\u6b63\u786e\u547d\u4ee4\u3002<\/span> <\/p>\n
# sed '1 d' file.txt<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236
\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<\/span>
\n\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<\/span>
\n <\/p>\n
# sed '1 d' file.txt &gt; new_file.txt<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236
\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<\/span>
\n <\/p>\n
# sed -i '1 d' file.txt<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236
\n3. \u4f60\u600e\u4e48\u68c0\u67e5\u4e00\u4e2a\u6587\u672c\u6587\u4ef6\u4e2d\u67d0\u4e00\u884c\u7684\u957f\u5ea6\uff1f<\/span>
\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<\/span> <\/p>\n
# sed -n 'n p' file.txt<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236
\n\u53ef\u4ee5\u89e3\u51b3\uff0c<\/span>
\n\u8fd9\u91cc\u2018n\u2019\u8868\u793a\u884c\u53f7\uff0c\u2018p\u2019\u6253\u5370\u51fa\u5339<\/span>
\n\u914d\u5185\u5bb9\uff08\u5230\u6807\u51c6\u8f93\u51fa<\/span>
\n\uff09\uff0c\u8be5\u547d\u4ee4\u901a\u5e38\u4e0e-n\u547d\u4ee4\u884c\u9009\u9879\u8fde\u7528\u3002<\/span>
\n\u90a3\u4e48\uff0c\u600e\u6837\u6765\u83b7\u53d6\u957f\u5ea6\u8ba1\u6570\u5462\uff1f<\/span>
\n\u5f88\u660e\u663e\uff0c\u6211\u4eec\u9700\u8981\u901a\u8fc7\u7ba1\u9053\u8f93\u51fa\u7ed9\u2018wc\u2019\u547d\u4ee4\u6765\u8ba1\u7b97\u3002<\/span>
\n
 
\n<\/span> <\/p>\n
# sed \u2013n 'n p' file.txt | wc \u2013c<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236
\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<\/span>
\n
 
\n<\/span> <\/p>\n
# sed -n '5 p' linuxmi.txt | wc -c<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236
\n\"Linux
\n4. \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<\/span>
\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<\/span>
\n\u6253\u5f00vi\u7f16\u8f91\u5668\u3002<\/span>
\n\u5148\u6309[esc]\u952e\uff0c\u7136\u540e\u6309\u2018\uff1a\u2019\u8fdb\u5165\u5230vi\u7f16\u8f91\u5668\u7684\u547d\u4ee4\u6a21\u5f0f\u3002<\/span>
\n\u6700\u540e\uff0c\u4ece\u2018vi\u2019\u7f16\u8f91\u5668\u7684\u547d\u4ee4\u754c\u9762\u8f93\u5165set list\u547d\u4ee4\u5e76\u6267\u884c\u3002<\/span>
\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<\/span>
\n5. \u5047\u5982\u4f60\u662f\u4e00\u4e2a\u5458\u5de5\u7ec4\u7684\u56e2\u961f\u9886\u5bfc\uff0c\u4e3axyz\u516c\u53f8\u5de5\u4f5c\u3002<\/span>
\n\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<\/span>
\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\u3002<\/span> <\/p>\n
# mkdir dir_xyz\n# chmod g+wx dir_xyz\n# chmod +t dir_xyz<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236
\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\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<\/span>
\n6. \u4f60\u80fd\u544a\u8bc9\u6211\u4e00\u4e2aLinux\u8fdb\u7a0b\u7ecf\u5386\u7684\u5404\u4e2a\u9636\u6bb5\u5417\uff1f<\/span>
\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<\/span>
\n\u8fd9\u91cc\u662fLinux\u8fdb\u7a0b\u8981\u7ecf\u5386\u7684\u56db\u4e2a\u9636\u6bb5\u3002<\/span> <\/p>\n
    \n
  • \n
    \u7b49\u5f85\uff1alinux\u8fdb\u7a0b\u7b49\u5f85\u8d44\u6e90\u3002<\/span><\/p>\n<\/li>\n
  • \n
    \u8fd0\u884c\uff1aLinux\u8fdb\u7a0b\u5f53\u524d\u6b63\u5728\u6267\u884c\u4e2d\u3002<\/span><\/p>\n<\/li>\n
  • \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<\/span><\/p>\n<\/li>\n
  • \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<\/span><\/p>\n<\/li>\n<\/ul>\n
    <\/span><\/p>\n
    7. Linux\u4e2dcut\u547d\u4ee4\u600e\u4e48\u7528\uff1f<\/span>
    \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<\/span>
    \n\u4f8b\u5982\uff0c\u622a\u53d6\u2018txt_linuxmi\u2019\u6587\u4ef6\u7684\u524d10\u5217\u3002<\/span> <\/p>\n
    # cut -c1-10 txt_linuxmi<\/pre>\n
     \u767b\u5f55\u540e\u590d\u5236
    \n\u8981\u622a\u53d6\u8be5\u6587\u4ef6\u4e2d\u7684\u7b2c\u4e8c\uff0c\u7b2c\u4e94\u548c\u7b2c\u4e03\u5217\u3002<\/span>
    \n <\/p>\n
    # cut -d;-f2 -f5 -f7 txt_linuxmi<\/pre>\n
     \u767b\u5f55\u540e\u590d\u5236
    \n8. \u2018cmp\u2019\u548c\u2018diff\u2019\u547d\u4ee4\u7684\u533a\u522b\u662f\u4ec0\u4e48\uff1f<\/span>
    \n
     
    \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<\/span>
    \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<\/span>
    \n9. \u53ef\u4ee5\u7528\u2018echo\u2019\u547d\u4ee4\u6765\u66ff\u6362\u2018ls\u2019\u547d\u4ee4\u5417\uff1f<\/span>
    \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<\/span>
    \n10. \u4f60\u53ef\u80fd\u542c\u8fc7inode\u5427\u3002\u4f60\u80fd\u7b80\u8981\u63cf\u8ff0\u4e00\u4e0binode\u5417\uff1f<\/span>
    \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<\/span> <\/p>\n
    \u4ee5\u4e0a\u5c31\u662fLinux Shell\u811a\u672c\u768410\u4e2a\u6709\u7528\u7684\u201c\u9762\u8bd5\u95ee\u9898\u548c\u89e3\u7b54\u201d\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8\u7c73\u4e91\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"
    Linux\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 \u5728\u6b64\uff0c\u4f5c\u4e3a\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 1. \u5728shell\u811a\u672c\u6210\u529f\u6267\u884c\u524d\uff0c\u5982\u4f55\u4e2d\u65ad\u811a\u672c\u6267\u884c\uff1f \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 \u4f8b\u5982\uff0c\u521b\u5efa\u4ee5\u4e0b\u4e00\u4e2a\u540d\u4e3a\u201clinuxmi.sh\u201d\u7684\u811a\u672c\u3002 #!\/bin\/bash echo “Hello” exit-1 echo “bye” \u767b\u5f55\u540e\u590d\u5236 \u4fdd\u5b58\u6587\u4ef6\u5e76\u6267\u884c\uff1a \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 2. \u5982\u4f55\u4f7f\u7528Linux\u547d\u4ee4\u6765\u79fb\u9664\u6587\u4ef6\u5934\uff1f \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 \u8fd9\u4e2a\u662f\u7528\u6765\u5220\u9664\u6587\u4ef6\u5934\uff08\u6587\u4ef6\u7684\u9996\u884c\uff09\u7684\u6b63\u786e\u547d\u4ee4\u3002 # sed ‘1 d’ file.txt \u767b\u5f55\u540e\u590d\u5236 \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 # sed ‘1 d’ file.txt &gt; new_file.txt \u767b\u5f55\u540e\u590d\u5236 \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 # sed -i ‘1 d’ file.txt \u767b\u5f55\u540e\u590d\u5236 3. \u4f60\u600e\u4e48\u68c0\u67e5\u4e00\u4e2a\u6587\u672c\u6587\u4ef6\u4e2d\u67d0\u4e00\u884c\u7684\u957f\u5ea6\uff1f \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 # sed -n ‘n p’ file.txt \u767b\u5f55\u540e\u590d\u5236 \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 # sed \u2013n ‘n p’ file.txt | wc \u2013c \u767b\u5f55\u540e\u590d\u5236 \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 # sed -n ‘5 p’ linuxmi.txt | wc -c \u767b\u5f55\u540e\u590d\u5236 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 \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 \u6253\u5f00vi\u7f16\u8f91\u5668\u3002 \u5148\u6309[esc]\u952e\uff0c\u7136\u540e\u6309\u2018\uff1a\u2019\u8fdb\u5165\u5230vi\u7f16\u8f91\u5668\u7684\u547d\u4ee4\u6a21\u5f0f\u3002 \u6700\u540e\uff0c\u4ece\u2018vi\u2019\u7f16\u8f91\u5668\u7684\u547d\u4ee4\u754c\u9762\u8f93\u5165set list\u547d\u4ee4\u5e76\u6267\u884c\u3002 \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 5. […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[8],"tags":[],"class_list":["post-16689","post","type-post","status-publish","format-standard","hentry","category-os"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/16689","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/comments?post=16689"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/16689\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=16689"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=16689"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=16689"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}