Shell script to list all files in the specified directory which have only read permis

farzanazhar · 01-29-2014, 11:46 PM

Hi,
How to write a SHELL Script to list all files in the specified directory which have only read permission and append write permission also to them.
Please respond to this and help me out

casualfred · 01-30-2014, 12:10 AM

Basically, you will want to use the 'find' command and the 'chmod' command in your script. I would recommend reading their man pages for their exact usage. Good luck!

farzanazhar · 01-30-2014, 12:15 AM

Actually I am a fresher to Unix. Can you please post the complete script so that i can understand and thank you for your reply.But please post the full script

NevemTeve · 01-30-2014, 08:46 AM

No-one will do your work instead of you, but perhaps an example might help:

Code:

find . -type f -a ! -writable -exec ls -l {} \;

TB0ne · 01-30-2014, 09:06 AM

Quote:

Originally Posted by farzanazhar

Actually I am a fresher to Unix. Can you please post the complete script so that i can understand and thank you for your reply.But please post the full script

As said, we're not going to write your scripts for you, but we WILL help you. You were given a hint with the find command, but didn't show any effort of your own. There are THOUSANDS of VERY easily-found scripting tutorials...did you try to look ANY of them up? Do ANY work of your own??

If you don't actually do anything for yourself, you will NEVER learn anything, about ANY subject.

Habitual · 01-30-2014, 11:32 AM

Code:

man find

says:

Code:

-perm mode
File's permission bits are exactly mode (octal or symbolic). Since an exact match is required, if you want
to use this form for symbolic modes, you may have to specify a rather complex mode string. For example -perm
g=w will only match files which have mode 0020 (that is, ones for which group write permission is the only
permission set). It is more likely that you will want to use the `/' or `-' forms, for example -perm -g=w,
which matches any file with group write permission. See the EXAMPLES section for some illustrative examples.

-perm -mode
All of the permission bits mode are set for the file. Symbolic modes are accepted in this form, and this is
usually the way in which would want to use them. You must specify `u', `g' or `o' if you use a symbolic
mode. See the EXAMPLES section for some illustrative examples.

-perm /mode
usually the way in which would want to use them. You must specify `u', `g' or `o' if you use a symbolic
mode. See the EXAMPLES section for some illustrative examples.

-perm /mode
Any of the permission bits mode are set for the file. Symbolic modes are accepted in this form. You must
specify `u', `g' or `o' if you use a symbolic mode. See the EXAMPLES section for some illustrative examples.
If no permission bits in mode are set, this test matches any file (the idea here is to be consistent with the
behaviour of -perm -000).

Using that info and the provided EXAMPLES here and in the man file, crafting a solution is left as an exercise for you.

Let us know.

rtmistler · 01-30-2014, 03:10 PM

Broken record, playing once again ...

As other's have said, please put forth an effort to try something.

Not an intro to bash scripting, but a lot of suggestions about being organized and fundamental when scripting; as well as some debug suggestions.

Bash Scripting for Dummies and Geniuses

Dafydd · 01-30-2014, 11:43 PM

Are any of them executable files? Who do you want to be able to write to them?