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This MCQ-formatted quiz focuses on shell programming using read command and command-line arguments, logical operators and conditional execution, using test and [ ] to evaluate expressions, case and expr commands, administrator specific commands and privileges.
Which of the following operators are used for logical execution?
||
&&
%%
&& and ||
When we use &&, the second command is executed only if the first succeeds. True or false?
True
False
When we use ||, both the commands are executed. True or false?
True
False
The syntax for using && is
cmd1 && cmd2
cmd1 cmd2 &&
cmd1 & cmd2&
cmd1
__ is used to perform decisions depending on the fulfilment of specific criteria.
if
else
for
if and else
The second set of the three permissions (r-) indicates that
Group has read permission only
Other has read permission only
Owner has read permission only
Group has write permission only
None of the above
Whilst working with the mail command, which command is used to save mail in a separate file?
s
r
w
d
None of the above
Which option is used with the sort command to start sorting after the nth column of the (m+l)th field?
-m.n
+m.n
+ n.m+1
+(m+l).n
None of the above
Which of the following commands is used to copy a file ‘wb’ from the program’s directory into a file called ‘wbx’ in the misc directory?
copy programs/wb misc/wbx
cp programs/wb misc/wbx
tar programs/wb misc/wbx
copy a:programs/wb b:misc/wbx
None of the above
Which of the following files contains information related to password ageing?
Shadow
Password
Profile
All of the above
None of the above
To know the exit status of a command, we use
$$
$*
$?
$-
Which of the following is not a special parameter used by the shell?
$$
$*
$?
$-
__ is used with ‘if-else’ statements to check more than two conditions.
while
for
elif
for
Every ‘if’ is closed with a corresponding
else
fi
if
else if
The name of the script is stored in which special parameter?
$1
$0
$#
$*
