How to create a file with full permission in unix script

Shell Programming and Scripting
1

In my script, I am creating a file ----> then writting one line (i.e. Timestamp) ----> then FTP'ing. The same script can be executed by many other users.
While other users executing this script, they couldn't Over write this one line (i.e. Timestamp)

My expectation
So I wanted to create a file with full permission(_rwxrwxrwx). Not by chmod.

Code

dt=`date +%m_%d_%y`
Tablename=$1

Filename=$Tablename"_"$dt.dmp
FlgFile=$Tablename.flg
 
echo $Filename > $FlgFile
chmod 777 $FlgFile

Error
When other user executing this script they are getting an error chmod: changing permissions of .FlgFile. "Operation not permitted"

Thanks in advance
sbmk

2

You can set umask 000 for the dir where the file will be created.

3

If your colleagues and you are in same unix group, umask 002 is enough.