This is abput Linux Op Sys How can I create a link to the /etc/hosts file in home directory and then, Issue the ls –l command to show the results. How can I create a soft link to the /etc/passwd file in home directory, then use the ls –l command to show the results.
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This is abput Linux Op Sys
How can I create a link to the /etc/hosts file in home directory and then, Issue the ls –l command to show the results.
How can I create a soft link to the /etc/passwd file in home directory, then use the ls –l command to show the results.
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- In termina, install the paho-mqtt module with pip using the following command: Sudo pip3 install paho-mqtt Create a new folder by the name of lab_6 and create a new python file mqtt_script_1.py In the file, TYPE the following code: import paho.mqtt.client as mqtt # The callback for when the client receives a CONNACK response from the server. def on_connect(client, userdata, flags, rc): print("Connected with result code "+str(rc)) # Subscribing in on_connect() means that if we lose the connection and # reconnect then subscriptions will be renewed. client.subscribe("etec224_mqtt_test/") # The callback for when a PUBLISH message is received from the server. def on_message(client, userdata, msg): print(msg.topic+" "+str(msg.payload)) client = mqtt.Client() client.on_connect = on_connect client.on_message = on_message client.connect("broker.emqx.io", 1883, 60) client.loop_forever() Create another file py and add the following code to it.…Refer to the below exhibit. Suppose you are working as a Linux administrator, you have been asked to count the number of availableempty files in the specfied directory. Write the shell script named "file.sh" used to accomplish this task in your directory.[root@localhost ~]# mkdir student[root@localhost ~]# cd student[root@localhost utas]#touch id1.txt[root@localhost utas]#touch id2.txt[root@localhost utas]#touch id3.txt[root@localhost utas]#touch id3.txt[root@localhost utas]# cd ..[root@localhost ~]#On the cmsy255 server, write a bash shell script called usrinfo that displays information about a specified user. Make sure the script file is executable. Also make sure that you can run the script without having to specify the directory. For example, you should NOT have to enter ./usrinfo in order for it to run. The script should: ● ● ● Accept 1 argument from the command line (this is the User ID that you want to display info for) finger the User ID display any lines from the who command that match this User ID display any lines from the ps -ef command that match this User ID In addition, if the number of arguments is not exactly 1, display an appropriate error message and exit with an exit code of 1.
- Refer to the below exhibit. Suppose you are working as a Linux administrator, you have been asked to count the number of available empty files in the specfied directory. Write the shell script named "file.sh" used to accomplish this task in your directory. [root@localhost ~]# mkdir student [root@localhost ~]# cd student [root@localhost utas]#touch id1.txt [root@localhost utas]#touch id2.txt [root@localhost utas]#touch id3.txt [root@localhost utas]#touch id3.txt [root@localhost utas]# cd .. [root@localhost ~]#How do you create 10 student users in Linux by adding a file to each of their home directories called ClassNotes. You will add each student to the tech group. The students Needs to be split into two groups and create these groups called Project A and Project B. In the home directory you will need to make two directories named SharedFolder A and B. You will need to change each group to their appropriate directory. Then you will need to set permissions for each shared directory so only the users and groups have access to their shared directory. You will then set the group ID for each shared folder so that all subdirectories and files inherit the shared folder permissions.Review the firewall ruleset shown below. If a system at 10.18.100.3 attempts an SSH (Secure shell) connection to the server at 192.168.10.5, what would be the result? (Analyze the rules carefully) Rule Source IP 1 2 3 4 any any 10.18.100.3 any Source Port any any any any Dest IP 192.168.10.5 192.168.10.6 192.168.10.6 any The traffic will be blocked by rule 4 The traffic will be blocked by rule 3 O The traffic will be allowed by rule 2 The traffic will be allowed by rule 1 Dest Port 1443 1521 22 any Action allow allow deny deny
- please helpe me Take a picture of the input and output Create a file in Kali Linux root directory with the name MyTest.txt.a. Generate a hash value for the above file.b. Make some changes to the text of the file and generate again the hash valueWrite about the change that you noticed. Display all the outputs one by oneIn Linux Say there is a file, students, under your home directory. Here is the content of the file students: 1001, Joe Smith, 111 Main Street 1002, Mary Johnson, 287 Broadway Ave 1003, Taylor Farlan, 255 Becker Street Use cut command to show only the third column of the file (only write down the command)what are the commands to send email to issue in the mail promot to achieve the following • Read the first e-mail message displayed • Save the 4th e-mail message to the file pathname: ~/maildir/3.msg.txt • Delete the 3rd e-mail message displayed Exit the mail command prompt and return to the shell
- Given a linux file mode (permissions) as an integer, return the permission string that the mode represents. Example 1: mode = 511 511 == Ob111111111 permissons = 'rwxrwxrwx' Example 2: mode = 424 424 == ob110101000 permissions = 'rw-r-x---' def perms(mode): passCreate an application that uses a socket connection to allow a client to specify a file name of a text file and have the server send the contents of the file or indicate the file does not exist. The server must contain a text based password file ("user name" & "password"). The client must pass a valid username and password to establish a connection with the Server (see Note 1). Notes: 1. A much better approach would be to encrypt the password file. The Java Cryptographic Extension (available since JDK 1.4) provides an API. Java Cryptography Architecture Reference Guide (JCA Guide): on oracle Introduction, Code Examples - Computing a Message Digest Object (i.e. one-way hash; using SHA-1) -Please ensure that it works need clear help compiling properly with no errors.In a short bash script named listdirs.sh that lists the names of the directories (the names only not the files contained in the directory) that are within the the directory provided as the single argument. The directory names are printed one per line. It prints the directories only, not symbolic links to directories. Please do this with a for-loop that for each entry to the directory provided as argument checks if it is a directory and if it is prints its name. If you run your script on red you should get red 302 % ./listdirs.sh / boot dev eecs etc home jas local media mnt obj opt pkgcache proc root run srv sys tmp usr var xconf xsys red 303 % To submit your script enclose it in a tar file using the command tar cf listdirs.tar listdirs.sh
