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Full Discussion: Retain file permissions when saving .sh file from internet [OS X]
Top Forums Shell Programming and Scripting Retain file permissions when saving .sh file from internet [OS X] Post 302266869 by baza210 on Thursday 11th of December 2008 08:29:26 AM
Old 12-11-2008
Retain file permissions when saving .sh file from internet [OS X]
Hello.
I have written a bash script that I am sharing with an OS X community I am a member of. The purpose of the script is to execute a series of commands for members without them having to get involved with Terminal, as it can be daunting for those with no experience of it at all. I have renamed the file from .sh to .command, as this allows you to execute it by double-clicking the file in the OS X file manager.
The file saves itself from my script editor [Smultron] with read and write permission only, and not executable permission; I use chmod 755 {file} to give myself execute permission, and then upload the file using ftp. Connecting to my server with ftp I then find that the file permissions have changed back to read/write, so I again use chmod in the ftp shell and change the permissions again. I thought this would have prevented the following problem, but I guess not-
When I, or anyone else, saves the file from the public domain folder I have hosted it in, the permissions are back to not being executable. Of course, this can be fixed with chmod +x, but that rather defeats the purpose of the script if they have to get involved with Terminal at all.

Could anyone please suggest a way to resolve this issue, ie how can I get the file to have persistent executable permission for all? It's driving me nuts at this stage.. I've put quite a lot of effort into the script.

Thanks
 

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LEARN ABOUT V7

chmod

CHMOD(1)						      General Commands Manual							  CHMOD(1)

NAME

       chmod - change mode

SYNOPSIS

       chmod mode file ...

DESCRIPTION

       The  mode  of  each  named  file is changed according to mode, which may be absolute or symbolic.  An absolute mode is an octal number con-
       structed from the OR of the following modes:

       4000	 set user ID on execution
       2000	 set group ID on execution
       1000	 sticky bit, see chmod(2)
       0400	 read by owner
       0200	 write by owner
       0100	 execute (search in directory) by owner
       0070	 read, write, execute (search) by group
       0007	 read, write, execute (search) by others

       A symbolic mode has the form:

	      [who] op permission [op permission] ...

       The who part is a combination of the letters u (for user's permissions), g (group) and o (other).  The letter a stands for ugo.	If who	is
       omitted, the default is a but the setting of the file creation mask (see umask(2)) is taken into account.

       Op  can	be + to add permission to the file's mode, - to take away permission and = to assign permission absolutely (all other bits will be
       reset).

       Permission is any combination of the letters r (read), w (write), x (execute), s (set owner or group id) and t (save text - sticky).   Let-
       ters  u,  g or o indicate that permission is to be taken from the current mode.	Omitting permission is only useful with = to take away all
       permissions.

       The first example denies write permission to others, the second makes a file executable:

	      chmod o-w file
	      chmod +x file

       Multiple symbolic modes separated by commas may be given.  Operations are performed in the order specified.  The letter s  is  only  useful
       with u or g.

       Only the owner of a file (or the super-user) may change its mode.

SEE ALSO

       ls(1), chmod(2), chown (1), stat(2), umask(2)

																	  CHMOD(1)
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