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Why /usr/bin/*.dll must be executable?


Hi,

When I type "cyg" and Tab, many executables starting with "cyg" are listed (Display all 262 possibilities? (y or n) y). I find that many of them are *.dll libraries under /usr/bin/. This is inconvenient to find the real executable applications (*.exe). Since *.dll files are only libraries, they are not necessary to have the attribute of "x". Thus, I run the command "chmod a-x /usr/bin/*.dll". Unexpectedly, cygwin is corrupted. I closed the terminal and failed to restart Cygwin. I started my older version of Cygwin (I did not deleted it after installing a new version), and added "x" to the previous *.dll files. The dead Cygwin revived.

I am confused why /usr/bin/*.dll should be executable. I thought they were only library files. When I tried to run a dll file, bash says "cannot execute binary file". Are there some hidden stories?

The error messages are as follows:

Administrator@acer /usr/bin
$ chmod a-x *.dll

Administrator@acer /usr/bin
$ lh
18 [main] -bash 4512 fork: child -1 - forked process died unexpectedly, retry 0, exit code -1073741790, errno 11
-bash: fork: retry: Resource temporarily unavailable
2020930 [main] -bash 4512 fork: child -1 - forked process died unexpectedly, retry 0, exit code -1073741790, errno 11
-bash: fork: retry: Resource temporarily unavailable
4039235 [main] -bash 4512 fork: child -1 - forked process died unexpectedly, retry 0, exit code -1073741790, errno 11
-bash: fork: retry: Resource temporarily unavailable
8057832 [main] -bash 4512 fork: child -1 - forked process died unexpectedly, retry 0, exit code -1073741790, errno 11
-bash: fork: retry: Resource temporarily unavailable
16074662 [main] -bash 4512 fork: child -1 - forked process died unexpectedly, retry 0, exit code -1073741790, errno 11
-bash: fork: Resource temporarily unavailable



DJ


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