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If I call a bash script with sudo, for example:

sudo bash script.sh

Do I still have to use sudo inside the script in cases like this:

sudo apt-get update

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Did you try it? – Cfreak Aug 9 '11 at 19:15
Course. I am getting a strange error: "+ sudo chmod +x /usr/bin/apt-fast =>> cleanstart.sh: line 134: sudo: command not found" that's why I did this basic question. – Roger Aug 9 '11 at 19:33
That's odd. The error message seems to indicate that sudo can't find the chmod command. Unless the command in the script is sudo "chmod +x /usr/bin/apt-fast", which would cause sudo to look for a command named "chmod +x /usr/bin/apt-fast". (But in any case, you don't need sudo inside the script.) – Keith Thompson Aug 9 '11 at 19:49
I see from your other question that your script had clobbered $PATH. – Keith Thompson Aug 9 '11 at 20:30
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2 Answers

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No. the command will be run with root privileges and all commands that the script runs will inherit the privileges.

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up vote -1 down vote

no, by calling sudo you are running a process in kernal mode which means you have access to everything, you no longer have to use special permissions in different areas of your code/script.

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You're not running in any sort of "kernel mode". You're just running it as a user with elevated permissions. – Wuffers Aug 21 '11 at 2:35
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