which of the following shells support float and array data types?
Korn
Bash
Bourne
None of these
which of the following are special systen parameters that contain information abt current processes? (select more than one answer)
?
!
$
#
What is the output of the last echo command executed on a bash shell? $ bash $ export a=aaagggccc $ echo ${a/g/b}
aaagggccc/g/b
aaabbbccc
aaabggccc
a/g/b
Which unix text processing tools will help me to replace all the instances of "hi india" to "HiIndia"?
awk
sed
perl
emac
I opened a text file in vi editor and typed the following command while in escape mode. :3 s/abc/xyz/
It looks for the all the abc strings in line 3 and replaces them to xyz.
It looks for the first abc string in the first 3 lines and replaces to xyz.
It looks for the first abc string in line 3 and replaces to xyz.
It looks for the first 3 abc string in the file and replaces them to xyz.
What key combination is typically used to interrupt running programs?
CTRL-E
CTRL-C
CTRL-D
CTRL-I
What symbol is used to "pipe" two commands together?
:
||
What command would you use to find all files under the current directory owned by the user foo?
find ./ -type file -user foo
find ./ -type f -owner foo
find ./ -type f -o foo
find ./ -type f -user foo
If no one has physical access to the computer, the root password need not be changed.
True
False
What would be the correct syntax to mount the share 'data' from Windows machine 'jupiter'?
mntsmb -s //jupiter/data /mnt/Data
mount -t smbfs /mnt/Data //jupiter/data
mount -t smbfs //jupiter/data /mnt/Data
smbfs -mount //jupiter/data /mnt/Data