The output indicates that fred is logged on, while we were checking to see whether ed was logged on. Modify ison to correct this problem.
The program ison from this chapter has a shortcoming as shown in the following example:
$ ison ed
fred tty03 Sep 4 14:53
The best way to fix this is to turn the pattern into a regular expression. Most versions of grep require that you use the '-E' flag to force evaluation of the specified pattern as a regex, however, so the best answer is:
who | grep -E "^$1[^a-z]"
You could also solve it with "^$1 " but the non-alpha pattern is more robust.
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Deepak's team is in charge of conducting a review of their company's waste/mistake prevention policies and procedures. Part of this review should also evaluate how upcoming changes in information systems will affect business activities.
Answer the following statement true (T) or false (F)
Does the web page appear?
Editing Configuration Files for Services a. First, open nginx’s configuration file in a nano. The configuration filename used here is custom_server.conf. Notice below that the command is preceded by the sudo command. After typing nano include a space and the -l switch to turn on line-numbering.
[analyst@secOps ~]$ sudo nano -l /etc/nginx/custom_server.conf [sudo] password for analyst:Use the arrow keys to navigate through the file.
GNU nano 2.8.1 File: /etc/nginx/custom_server.conf
#user html;
worker_processes 1;
#error_log logs/error.log;
#error_log logs/error.log notice;
#error_log logs/error.log info;
#pid logs/nginx.pid;
events {
worker_connections 1024;
}
http {
include mime.types;
default_type application/octet-stream;
#log_format main '$remote_addr - $remote_user [$time_local]
"$request$
# '$status $body_bytes_sent "$http_referer" '
# '"$http_user_agent" "$http_x_forwarded_for"';
#access_log logs/access.log main;
sendfile on;
#tcp_nopush on;
#keepalive_timeout 0;
keepalive_timeout 65;
#gzip on;
server {
listen 81;
server_name localhost;
#charset koi8-r;
#access_log logs/host.access.log main;
location / {
root /usr/share/nginx/html;
index index.html index.htm;
}
#error_page 404 /404.html;
^G Get Help ^O Write Out ^W Where Is ^K Cut Text ^J Justify ^C Cur Pos
^X Exit ^R Read File ^\ Replace ^U Uncut Text^T To Spell ^_ Go To Li
b. While the configuration file has many parameters, we will configure only two: the port nginx listens on for incoming connections, and the directory it will serve web pages from, including the index HTML homepage file.
c. Notice that at the bottom of the window, above the nano commands, the line number is highlighted and listed. On line 36, change the port number from 81 to 8080. This will tell nginx to listen to HTTP requests on port TCP 8080.
d. Next, move to line 44 and change the path from /usr/share/nginx/html/ to /home/analyst/ lab.support.files/
e. Press CTRL+X to save the file. Press Y and then ENTER to confirm and use the custom_server.conf as the filename.
f. Type the command below to execute nginx using the modified configuration file:
[analyst@secOps ~]$ sudo nginx -c custom_server.conf -g "pid /var/run/nginx_v. pid;"g. Click the web browser icon on the Dock to launch Firefox. h. On the address bar, type 127.0.0.1:8080 to connect to a web server hosted on the local machine on port 8080. A page related to this lab should appear. i. After successfully opening the nginx homepage, look at the connection message in the terminal window. j. To shut down the nginx web server, press ENTER to get a command prompt and type the following command in the terminal window:
[analyst@secOps ~]$ sudo pkill nginxk. You can test whether the nginx server is indeed shut down by first clearing the recent history in the web browser, then close and re-open the web browser, then go to the nginx homepage at 127.0.0.1:8080.
What is not true about table relationships?
A) They are created automatically by Access when normalization is complete. B) They must be set up manually. C) Creating them can be a good test your normalization efforts. D) Creating them allows you to retrieve data in a multi-table database.
What type of diagram is referred to as the communication between concepts?
A. sequence B. interaction C. conceptual D. association