su with << operator


 
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# 1  
Old 12-29-2009
su with << operator

All,


THe below is my script , when i use this i am getting nothing . could any one help me to know what is the use of the << operator below

su - $8 << supo
echo "exportsph $2 $1 $3 $4"
exportsph $2 $1 $3 $4
supo



i also tried as individual command su - userid << supo , when i do this it is prompting me to enter some value

Thanks,
Arun
# 2  
Old 12-29-2009
Are you logged in and running the script as root? FWIW -- sudo was designed to run pieces of code as somebody else.
root can sudo to anybody.
# 3  
Old 12-29-2009
No i am not running this as root. I mean my script which has this command will not run as root.
su - $8 << supo

by this above command what it will do and why we are again running

supo again
# 4  
Old 12-29-2009
It is HERE document.




So, you can give multiple commands to be executed there, the start and end word should same.

Code:
su - guest << tttt
echo 'hi'
cd /tmp
pwd
tttt

hi
/tmp

Refer: Here Documents

Hope it sheds some light there ...
 
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