On Wed, 31 Jan 2018 20:06:38 +0000 (UTC)
"mr.cheng" <crq...@ymail.com> wrote:
> I checked all bash_history and system logs, didn't see any explicit
> bash call of "chmod g+w ..." ; so I suspect some software is calling
> by chmod syscall,
What is your umask set as? That determines what permissions new files
get. It is often set explicitly in ~/.bash_profile or ~/.bashrc I
have a line in .bashrc of
umask 0077
and my files are created as rw------ if they are non executable.
umask [-p] [-S] [mode]
The user file-creation mask is set to mode. If mode
begins with a digit, it is interpreted as an octal number; otherwise
it is interpreted as a symbolic mode mask similar to that accepted by
chmod(1). If mode is omitted, the current value of the mask is
printed. The -S option causes the mask to be printed in symbolic
form; the default output is an octal number. If the -p option is
supplied, and mode is omitted, the output is in a form that may be
reused as input. The return status is 0 if the mode was successfully
changed or if no mode argument was supplied, and false otherwise.
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