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You need to be able to write a short script using constructs and utilities we've discussed in the course so far. These exercises should be helpful to you as practice to reinforce what you already learned during the semester.
= Conditions =
== Test PATH ==
Write a script that will check whether the current user's path variable contains /sbin. If it does - the script will print "Your current user (#) is likely an administrator". If it doesn't - it will print "Your current user (#) is likely not an administrator". The # should be replaced with the user's UID which you can obtain with the '''id -a''' command.
== Get subnet mask ==
The following is a sample output of the '''ip address''' command:
<pre>1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: eth2: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
link/ether fc:aa:14:c7:86:11 brd ff:ff:ff:ff:ff:ff
inet 10.0.0.4/24 brd 10.0.0.255 scope global eth2
valid_lft forever preferred_lft forever
inet6 fe80::feaa:14ff:fec7:8611/64 scope link
valid_lft forever preferred_lft forever</pre>
Write a script that will check whether any interface has the IP address 10.0.0.4 and if it does - it will print the subnet mask used with that interface (subnet mask or bit length, whatever you prefer). If it doesn't - it will print a message saying so.
= Loops =
== Move all files ==
Write a script that will move all the files from the current directory to /data/backup/. If the script encouters an error for any reason (e.g. permission denied) it should stop and print the message "Failed to move the file ABC, move stopped!" where ABC should be the name of the file that failed to move.
== Fancy ls ==
Write a script that will list the contents of the present working directory. Every directory in the PWD should be printed like this (with the <> signs):
<dirctoryname>
and every file in the PWD should be printed like this (with the double quotes):
"filename"
Note that the "test -d" command will return true when applied to a directory and false otherwise.
= Conditions =
== Test PATH ==
Write a script that will check whether the current user's path variable contains /sbin. If it does - the script will print "Your current user (#) is likely an administrator". If it doesn't - it will print "Your current user (#) is likely not an administrator". The # should be replaced with the user's UID which you can obtain with the '''id -a''' command.
== Get subnet mask ==
The following is a sample output of the '''ip address''' command:
<pre>1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: eth2: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
link/ether fc:aa:14:c7:86:11 brd ff:ff:ff:ff:ff:ff
inet 10.0.0.4/24 brd 10.0.0.255 scope global eth2
valid_lft forever preferred_lft forever
inet6 fe80::feaa:14ff:fec7:8611/64 scope link
valid_lft forever preferred_lft forever</pre>
Write a script that will check whether any interface has the IP address 10.0.0.4 and if it does - it will print the subnet mask used with that interface (subnet mask or bit length, whatever you prefer). If it doesn't - it will print a message saying so.
= Loops =
== Move all files ==
Write a script that will move all the files from the current directory to /data/backup/. If the script encouters an error for any reason (e.g. permission denied) it should stop and print the message "Failed to move the file ABC, move stopped!" where ABC should be the name of the file that failed to move.
== Fancy ls ==
Write a script that will list the contents of the present working directory. Every directory in the PWD should be printed like this (with the <> signs):
<dirctoryname>
and every file in the PWD should be printed like this (with the double quotes):
"filename"
Note that the "test -d" command will return true when applied to a directory and false otherwise.
