09-01-2013
Quote:
Originally Posted by
Scrutinizer
Note there are two distinct script. The first one uses positional parameters to expand *.dat , the second uses a for loop. You can chose either one.. (there was a small typo in the second one, I corrected it in the mean time)
You can try these commands on a command prompt... You can also test them by pasting them in a file and then make that file executable (chmod +x file ) . You can execute a script by using ./, followed by the name of the file./file. A .sh extension is not required..
Thanks a lot , actually I have a habbit of storing the scripts in an independent file with .sh extension and then calling them like sh aa.sh (assuming the script name is aa.sh ) so please advise can I do like that also and when I invoke i will pass the source folder name and destination filder name, like suppose the script name is aa.sh so the command will to execute the script will be like..
sh aa.sh temp1 temp2
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SETUID(1) General Commands Manual SETUID(1)
NAME
setuid - run a command with a different uid.
SYNOPSIS
setuid username|uid command [ args ]
DESCRIPTION
Setuid changes user id, then executes the specified command. Unlike some versions of su(1), this program doesn't ever ask for a password
when executed with effective uid=root. This program doesn't change the environment; it only changes the uid and then uses execvp() to find
the command in the path, and execute it. (If the command is a script, execvp() passes the command name to /bin/sh for processing.)
For example,
setuid some_user $SHELL
can be used to start a shell running as another user.
Setuid is useful inside scripts that are being run by a setuid-root user -- such as a script invoked with super, so that the script can
execute some commands using the uid of the original user, instead of root. This allows unsafe commands (such as editors and pagers) to be
used in a non-root mode inside a super script. For example, an operator with permission to modify a certain protected_file could use a
super command that simply does:
cp protected_file temp_file
setuid $ORIG_USER ${EDITOR:-/bin/vi} temp_file
cp temp_file protected_file
(Note: don't use this example directly. If the temp_file can somehow be replaced by another user, as might be the case if it's kept in a
temporary directory, there will be a race condition in the time between editing the temporary file and copying it back to the protected
file.)
AUTHOR
Will Deich
local SETUID(1)