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Problems encountered during shell execution

Source: Internet
Author: User
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Problems encountered during shell execution-general Linux technology-Linux programming and kernel information. The following is a detailed description. In chmod + x ***. after sh, use sh ***. sh cannot be executed (Syntax error: "(" unexpected error occurs when the array is defined. /***. sh to run normally. Because the/bin/sh in the GNU/Linux operating system is a symbolic link of bash (Bourne-Again Shell), bash is too complex, someone transplanted ash from NetBSD to Linux and renamed it "dash (Debian almqualified Shell)". It is recommended that/bin/sh be directed to it for faster script execution. Ubuntu claims that the system startup speed has been significantly improved since they did so in version 6.10.

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