echo > 和 echo >>的区别_2

echo > 和 echo >>的区别 曹嘉怡回答:[[{"txt": "u5728u64cdu4f5cu7cfbu7edfu4e2duff0cu6211u4eecu7ecfu5e38u4f1au9047u5230u547du4ee4u64cdu4f5cu7b26>uff08u8f93u51fau91cdu5b9au5411uff09u548c>>uff08u8f93u51fau8ffdu52a0u91cdu5b9au5411uff09u3002u5f88u591au65b0u624bu5c0fu4f19u4f34u5728u63a5u89e6u7684u65f6u5019uff0cu603bu662fu56f0u60d1u8f93u51fau91cdu5b9au5411uff08>uff09u548cu8f93u51fau8ffdu52a0u91cdu5b9au5411uff08>>uff09u7684u533au522buff0cu4e0bu9762u5c0fu7f16u5c31u548cu5927u5bb6u4e00u8d77u5206u4eabuff0c>u548c>>u7684u533au522bu3002"}], [{"txt": ["u5de5u5177/u539fu6599"]}, {"txt": "windowsu6216u8005linux"}], [{"txt": ["u65b9u6cd5/u6b65u9aa4"]}, {"txt": "u8fd9u91ccu5c0fu7f16u5c31u4ee5windowsu4e3au4f8buff08unix/linuxu4e5fu662fu4e00u6837uff09echou7684u4f5cu7528uff1aechou7684u4f5cu7528u5176u5b9eu5f88u7b80u5355uff0cu5c31u662fu6253u5370u5b57u7b26u4e32u5230u8f93u51fau6587u4ef6u6d41u3002u4f8bu5982uff1aecho Hello,Binnu5982u56feuff0cu6267u884cu4e4bu540euff0cu7ec8u7aefu4f1au6253u5370u51faechou7684u53c2u6570uff0cu5373Hello,Binn"}, {"img": ["https://exp-picture.cdn.bcebos.com/bfa52adaf05e4a23ab6f9eae1dd818196020e2b1.jpg?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_500%2Climit_1"]}, {"txt": ">u64cdu4f5cu7b26u8f93u51fau91cdu5b9au5411u7684u4f5cu7528uff1aecho + u8f93u51fau91cdu5b9au5411u7684u7528u6cd5uff1aecho u53c2u6570 > u8f93u51fau6587u4ef6echo Hello,Binn > tmp.txtu8fd9u53e5u8bddu7684u610fu601du5373u662fuff1au8f93u51faHello,Binnu5b57u7b26u4e32u5230u4e00u4e2au4f4du7f6euff0cu5982u679ctmp.txtu5b58u5728uff0cu6211u4eecu5373u3010u6e05u7a7au5176u5185u5bb9uff0cu66f4u65b0u4e3aHello,Binnu3011uff0cu4e0du5b58u5728uff0cu521bu5efau4e4bu8fd9u4e2au8fc7u7a0buff0cechou6ca1u6709u50cfu4e4bu524du90a3u6837u5411u7ec8u7aefu6253u5370u53c2u6570uff0cu4e3au4ec0u4e48uff1fu539fu56e0u662fu56e0u4e3auff0c>u8f93u51fau91cdu5b9au5411u628aechou7684u53c2u6570u8f93u51fau5230u67d0u4e2au6587u4ef6uff08u800cu4e0du662fu8f93u51fau5230u7ec8u7aefuff0cu8fd9u5c31u662fu8f93u51fau91cdu5b9au5411uff09u3002"}, {"img": ["https://exp-picture.cdn.bcebos.com/6061b9cd0c6efbf2d8ad1564127bbbf4db58dab1.jpg?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_500%2Climit_1"]}, {"txt": "u6b64u65f6u6211u4eecu770bu770btmp.txtu7684u5185u5bb9u3002type tmp.txtuff08linux/unixu8bf7u7528catuff09u8fd9u662fu4e0du662fu6211u4eecu521au521aechou8981u8f93u51fau7684u5185u5bb9u5462uff1fu6ca1u9519uff0cu5c31u662fu8fd9u4e2au3002"}, {"img": ["https://exp-picture.cdn.bcebos.com/8a17b3042e6817e9b7ff6e4bd356d53da924ceb1.jpg?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_500%2Climit_1"]}, {"txt": "u64cdu4f5cu7b26>>u8f93u51fau8ffdu52a0u91cdu5b9au5411u548c>u8f93u51fau91cdu5b9au5411u529fu80fdu7c7bu4f3cu3002u76f8u540cu7684u5730u65b9u662fuff1au5982u679cu91cdu5b9au5411u7684u6587u4ef6u4e0du5b58u5728uff0cu521bu5efau4e4bu552fu4e00u4e0du540cu7684u5730u65b9u662fuff1au3010u5982u679cu91cdu5b9au5411u7684u6587u4ef6u5b58u5728uff0cu8ffdu52a0u4e4buff08>u7b26u662fu6e05u7a7au540eu65b0u589eu5185u5bb9uff0c>>u662fu5728u6587u4ef6u672bu5c3eu8ffdu52a0u5b57u7b26u4e32uff09u3011u6211u4eecu8fd9u6837u505au4e2au8bd5u9a8cuff0cu66f4u5bb9u6613u7406u89e3u30026u6b65uff0cu4ed4u7ec6u89c2u5bdfuff0cu5f88u5bb9u6613u5c31u80fdu7406u89e3u30021u3001u8f93u51fau91cdu5b9au5411au5230tmp.txt:u00a0 echo Hello,A > tmp.txt2u3001u67e5u770btmp.txtu7684u5185u5bb9uff08u6b64u65f6u7684u5185u5bb9u662fAuff09u00a0 type tmp.txtu00a0u00a03u3001u8f93u51fau91cdu5b9au5411bu5230tmp.txtu00a0 echo Hello,B > tmp.txt4u3001u67e5u770btmp.txtu7684u5185u5bb9uff08u6b64u65f6u53efu4ee5u770bu5230uff0c>u5df2u7ecfu628aAu66ffu6362u6210Bu4e86uff09u00a0 type tmp.txt5u3001u8f93u51fau8ffdu52a0u91cdu5b9au5411cu5230tmp.txtu00a0 echo Hello,C >> tmp.txt6u3001u67e5u770btmp.txtu7684u5185u5bb9uff08u6b64u65f6u53efu4ee5u770bu5230uff0cu539fu6765u7684u5b57u7b26u4e32Bu5e76u6ca1u6709u88abu66ffu6362uff0cu800cu662fu5728Bu7684u4e0bu4e00u884cu65b0u589eu5b57u7b26u4e32Cuff0cu5373u8ffdu52a0u64cdu4f5cuff09u00a0 type tmp.txtu4e0du591au8bf4uff0cu4e00u6b65u4e00u6b65u6765u3002"}, {"img": ["https://exp-picture.cdn.bcebos.com/ba274f598540102af5fc5e11b142a07aa110c5b1.jpg?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_500%2Climit_1", "https://exp-picture.cdn.bcebos.com/ed792abb19efa25ff70aa2c859828689a0463bb6.jpg?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_500%2Climit_1"]}, {"txt": "u7b2cu4e09u6b65u548cu7b2cu56dbu6b65uff1a3u3001u8f93u51fau91cdu5b9au5411bu5230tmp.txtu00a0 echo Hello,B > tmp.txt4u3001u67e5u770btmp.txtu7684u5185u5bb9uff08u6b64u65f6u53efu4ee5u770bu5230uff0c>u5df2u7ecfu628aAu66ffu6362u6210Bu4e86uff09u00a0 type tmp.txt"}, {"img": ["https://exp-picture.cdn.bcebos.com/b6f0f0f97fbd4c7c30ac5cf2b8bad341027d30b6.jpg?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_500%2Climit_1"]}, {"txt": "u7b2cu4e94u6b65u548cu7b2cu516du6b65uff1a5u3001u8f93u51fau8ffdu52a0u91cdu5b9au5411cu5230tmp.txtu00a0 echo Hello,C >> tmp.txt6u3001u67e5u770btmp.txtu7684u5185u5bb9uff08u6b64u65f6u53efu4ee5u770bu5230uff0cu539fu6765u7684u5b57u7b26u4e32Bu5e76u6ca1u6709u88abu66ffu6362uff0cu800cu662fu5728Bu7684u4e0bu4e00u884cu65b0u589eu5b57u7b26u4e32Cuff0cu5373u8ffdu52a0u64cdu4f5cuff09u00a0 type tmp.txtu505au5230u8fd9u91ccu76f8u4fe1u5c0fu4f19u4f34u5df2u7ecfu660eu767du91cdu5b9au5411u548cu8ffdu52a0u91cdu5b9au5411u7684u533au522bu3002"}, {"img": ["https://exp-picture.cdn.bcebos.com/e076d77622bc7dc5c2784bec5e460596b91429b6.jpg?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_500%2Climit_1"]}], [{"txt": ["u6ce8u610fu4e8bu9879"]}, {"txt": "u5982u679cu559cu6b22u672cu7ecfu9a8cuff0cu8bf7u5173u6ce8u6211u3002u53efu4ee5u628au5b83u5206u4eabu7ed9u60a8u7684u670bu53cbuff0cu8bf7u70b9u4e2au6295u7968u70b9u4e2au6536u85cfu3002u8c22u8c22uff0cu60a8u7684u652fu6301u662fu6211u6700u5927u7684u52a8u529bu3002"}]]