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How can we change the permissions of a file in a directory

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# 1  
Old 02-17-2010
How can we change the permissions of a file in a directory
Hi All,
I am trying to wite a Shell script which changes the permission of the files in a folder but stuck at a particular point,please help.

The scenario is as follwoing:

I am having a list of 10 files and a folder which has 100 files.

I need to copare the list and the folder ,for suppose if i have only one file say some "X.ksh" common between the list and the folder,
then i need to change the permissions of all the 99 files in the folder (i.e need to ignore the common file) to 755.

Please let me know how i can solve this.

Thanks in Advance.

Regards,
Sriram.
# 2  
Old 02-17-2010
grep with the -v option will list all the values that do not match the template.

so:
Code:
list=`ls |grep -v X.ksh`
chmod 0755 $list

Alternatively change the permissions on all files to 0755, and attempt to change the list of 10 files back to what they should be.
# 3  
Old 02-18-2010
Hi ,

One more question how can we compare two lists say L1 and L2 and get only the lines which are extra in one of the file say L2.

Thanks in advance
# 4  
Old 02-18-2010
If your file list is file1,file2, file3 and the directory name is 'directory', then

Code:
for i in file1 file2 file3
do
  chmod 755 directory/$i
done

# 5  
Old 02-18-2010
Quote:
Originally Posted by Sriram.Vedula53
Hi ,

One more question how can we compare two lists say L1 and L2 and get only the lines which are extra in one of the file say L2.

Thanks in advance
The 'diff' command shows the changes that have to be made to file1 to create file2. This could include deletes as well as adds.
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