Yes surely we can remove the grub password by booting the
linux server in rescue mode edit the grub.conf file
Method 1
I)chmod /mnt/sysImage
ii)Edit the grub.conf file and remove the passwd line from
the file. Save the file and exit change the password md5 in
the grub line and set your own password.
iii)Once your machine reboots, you will be able to start
your Linux OS in the usual manner
You routinely compress old log files. You now need to examine a log from two months ago. In order to view its contents without first having to decompress it, use the _________ utility in Linux
You suspect that you have two commands with the same name as the command is not producing the expected results. What command can you use to determine the location of the command being run?
You locate a command in the /bin directory but do not know what it does. What command can you use to determine its purpose
You wish to create a link to the /data directory in bob's home directory so you issue the command ln /data /home/bob/datalink but the command fails. What option should you use in this command line to be successful.
The statement z = 'expr 5 / 2′ would store which of the following values in z? a) 0 b) 1 c) 2 d) 2.5 e) 3
What is the output of the following program? [ -n $HOME ] echo $? [ -z $HOME ] echo $? a) 0 1 b) 1 0 c) 0 0 d) 1 1
What is the output of the following program? x = 3; y = 5; z = 10; if [( $x -eq 3 ) -a ( $y -eq 5 -o $z -eq 10 )] then echo $x else echo $y fi a) 1 b) 3 c) 5 d) Error
The expression expr -9 % 2 evaluates to a) 0 b) 1 c) -1 d) 2
What is the output of the following program? b = [ -n $b ] echo $? [ -z $b ] echo $? a) 1 1 b) 2 2 c) 0 0 d) 0 1
What is the output of the following code os=Unix echo 1.$os 2."$os" 3.'$os' 4.$os a) 1.Unix 2.Unix 3.Unix 4.Unix b) 1.Unix 2.Unix 3.$os 4.Unix c) 1.Unix 2.Unix 3.Unix 4.$os d) 1.Unix 2.$os 3.$os 4.$os
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