bash与sh的区别 linux中sh和bash的区别
bash\u548cdash\u7684\u533a\u522b\u8bed\u6cd5\u4e0a\u7684\u4e3b\u8981\u7684\u533a\u522b\u6709:
1.\u5b9a\u4e49\u51fd\u6570
bash: function\u5728bash\u4e2d\u4e3a\u5173\u952e\u5b57
dash: dash\u4e2d\u6ca1\u6709function\u8fd9\u4e2a\u5173\u952e\u5b57
2.select var in list; do command; done
bash:\u652f\u6301
dash:\u4e0d\u652f\u6301, \u66ff\u4ee3\u65b9\u6cd5:\u91c7\u7528while+read+case\u6765\u5b9e\u73b0
3. echo {0..10}
bash:\u652f\u6301{n..m}\u5c55\u5f00
dash:\u4e0d\u652f\u6301\uff0c\u66ff\u4ee3\u65b9\u6cd5, \u91c7\u7528seq\u5916\u90e8\u547d\u4ee4
4. here string
bash:\u652f\u6301here string
dash:\u4e0d\u652f\u6301, \u66ff\u4ee3\u65b9\u6cd5:\u53ef\u91c7\u7528here documents
5. >&word\u91cd\u5b9a\u5411\u6807\u51c6\u8f93\u51fa\u548c\u6807\u51c6\u9519\u8bef
bash: \u5f53word\u4e3a\u975e\u6570\u5b57\u65f6\uff0c>&word\u53d8\u6210\u91cd\u5b9a\u5411\u6807\u51c6\u9519\u8bef\u548c\u6807\u51c6\u8f93\u51fa\u5230\u6587\u4ef6word
dash: >&word, word\u4e0d\u652f\u6301\u975e\u6570\u5b57, \u66ff\u4ee3\u65b9\u6cd5: >word 2>&1; \u5e38\u89c1\u7528\u6cd5 >/dev/null 2>&1
6. \u6570\u7ec4
bash: \u652f\u6301\u6570\u7ec4, bash4\u652f\u6301\u5173\u8054\u6570\u7ec4
dash: \u4e0d\u652f\u6301\u6570\u7ec4\uff0c\u66ff\u4ee3\u65b9\u6cd5, \u91c7\u7528\u53d8\u91cf\u540d+\u5e8f\u53f7\u6765\u5b9e\u73b0\u7c7b\u4f3c\u7684\u6548\u679c
sh\u901a\u5e38\u662f\u4e00\u4e2a\u8f6f\u94fe\u63a5\uff0c\u94fe\u63a5\u5230\u7cfb\u7edf\u9ed8\u8ba4shell\uff0c\u5982\u679cbash\u662f\u7cfb\u7edf\u9ed8\u8ba4\u7684\u8bdd\u90a3sh\u5c31\u662fbash,debian \u7684\u662fdash\uff0c\u4e0d\u662fbash
bash是 Bourne Again SHell 是linux标准的默认shell ，它基于Bourne shell，吸收了C shell和Korn shell的一些特性。bash完全兼容Bourne shell,也就是说用Bourne shell的脚本不加修改可以在bash中执行。sh是Bourne shell 这个是UNIX标准的默认shell，对它评价是concise简洁 compact紧凑 fast高效 有AT&T编写，属于系统管理shell。
绛旓細鍦╱buntu涓紝sh鍙槸bash鐨勪竴涓摼鎺ワ紝鎵ц鐨勭▼搴忛兘鏄竴鏍风殑锛屽懡浠よВ閲婂櫒鏄竴鏍风殑銆備絾 bash xxx.sh鍜 ./xxx.sh鍜 sh xxx.sh 杩樻槸鏈涓嶅悓鐨勶紝bash xxx.sh鍜宻h xxx.sh閮藉凡缁忔槸鐩存帴鎵ц鍛戒护锛岃剼鏈▼搴忎綔涓鸿繖涓懡浠ょ殑鍙傛暟锛屼笉瀛樺湪鍙鎬ф潈闄愮殑闂锛岃./xxx.sh鍒欏繀椤诲叿鏈夊彲鎵ц鏉冮檺锛屽湪閮ㄥ垎鑷姩鍖栫殑...
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绛旓細!/bin/sh 鏄寚姝よ剼鏈娇鐢/bin/sh鏉ヨВ閲婃墽琛岋紝#!鏄壒娈婄殑琛ㄧず绗︼紝鍏跺悗闈㈡牴鐨勬槸姝よВ閲婃鑴氭湰鐨剆hell鐨勮矾寰勩$bash $琛ㄧず绯荤粺鎻愮ず绗︼紝$琛ㄧず姝ょ敤鎴蜂负鏅氱敤鎴凤紝瓒呯骇鐢ㄦ埛鐨勬彁绀虹鏄純锛宐ash鏄痵hell鐨勪竴绉嶏紝鏄痩inux涓嬫渶甯哥敤鐨勪竴绉峴hell锛$bash鐨鎰忔濇槸鎵ц涓涓瓙shell锛屾瀛恠hell涓...
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绛旓細Bash鏄竴涓懡浠ゅ鐞嗗櫒锛岄氬父杩愯浜庢枃鏈獥鍙ｄ腑锛屽苟鑳芥墽琛岀敤鎴风洿鎺ヨ緭鍏ョ殑鍛戒护銆侭ash杩樿兘浠庢枃浠朵腑璇诲彇鍛戒护锛岃繖鏍风殑鏂囦欢绉颁负鑴氭湰銆傚拰鍏朵粬Unix shell 涓鏍凤紝瀹冩敮鎸佹枃浠跺悕鏇挎崲(閫氶厤绗﹀尮閰)銆佺閬撱乭ere鏂囨。銆佸懡浠ゆ浛鎹佸彉閲忥紝浠ュ強鏉′欢鍒ゆ柇鍜屽惊鐜亶鍘嗙殑缁撴瀯鎺у埗璇彞銆傚寘鎷叧閿瓧銆佽娉曞湪鍐呯殑鍩烘湰鐗规у叏閮ㄦ槸浠巗h鍊熼壌...
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绛旓細shell)/bin/ksh (Kornshell 鐢 AT&T Bell lab. 鍙戝睍鍑轰締鐨勶紝鐩歌瀺浜 bash)/bin/tcsh (鏁村悎 C Shell 锛屾彁渚涙洿澶氱殑鍔熻兘)/bin/csh (宸茬粡琚 /bin/tcsh 鎵鍙栦唬)/bin/zsh (鍩轰簬 ksh 鍙戝睍鍑轰締鐨勶紝鍔熻兘鏇村挤澶х殑 shell)鐜板湪涓鑸殑shell 鏄娇鐢ㄧ殑bash 甯︽湁鍛戒护鑷姩琛ュ叏绛夌瓑鍔熻兘锛屼絾鍩烘湰鐨剆h娌℃湁 ...
绛旓細bash鑳藉吋瀹规墍鏈夌殑sh锛屽鏋滀綘鏄垵瀛﹁咃紝褰撳畠浠竴鏍蜂篃琛
