WEBVTT 00:08.560 --> 00:16.160 The right host Come on let displays specify objects to the console money use money. 00:16.240 --> 00:19.120 Come on let's say you're down to your right. 00:19.120 --> 00:20.690 Host come on land. 00:20.770 --> 00:29.890 Since the objects passed along a pipeline and are displayed by default by default for matter but on 00:29.950 --> 00:35.740 other occasions for instance in the first example in the Presidium read. 00:35.740 --> 00:44.640 Host listen if you want to see the welfare of a variable you can use the right host command led to displayed 00:45.010 --> 00:53.100 but its not necessary to write write host variable name will display the same information. 00:53.140 --> 01:02.200 If you type just a variable name the right host command led becomes more useful when you want to customize 01:02.290 --> 01:04.180 the display in some way. 01:04.180 --> 01:12.550 For example you can specify the background color or the foreground color or the well your to be displayed. 01:12.700 --> 01:18.870 In addition to the common parameters the right host command block supports the following parameters 01:19.110 --> 01:20.030 object. 01:20.080 --> 01:28.930 Its a positional parameter in position one specifies the object or objects that are to be written to 01:28.930 --> 01:29.980 the console. 01:30.160 --> 01:31.630 No new line. 01:31.630 --> 01:37.290 A boolean parameter if present after 11 is written to the console. 01:37.330 --> 01:41.340 It's not followed by a newline separator. 01:41.490 --> 01:49.960 A screen to be output to the console when multiple objects are processed by the right host Come on let 01:50.290 --> 01:57.820 the well you're of the stream and is used as the separator between the well used to be displayed background 01:57.850 --> 01:58.680 color. 01:58.870 --> 02:05.010 This perimeter specifies the background color and foreground color parameter. 02:05.050 --> 02:07.840 It specifies the foreground color. 02:08.080 --> 02:10.680 You use the command line out right. 02:10.690 --> 02:11.490 Host. 02:11.710 --> 02:20.230 If you want to output information that is being processed on a pipeline in such scenarios no output 02:20.230 --> 02:22.020 is displayed by default. 02:22.120 --> 02:24.660 For example the following code. 02:24.770 --> 02:26.110 Right host. 02:26.170 --> 02:26.610 Test. 02:26.620 --> 02:27.940 Don't be a swan. 02:28.090 --> 02:28.510 That too. 02:28.520 --> 02:36.760 Well yes the read in from the command line would simply exist as the variables name and pass for and 02:36.760 --> 02:46.000 not be displayed since the to write statements are command to tout in some sentence that may be what 02:46.000 --> 02:46.850 you want. 02:47.020 --> 02:55.870 However if objects are being passed along the pipeline suggesting they get process statement that objects 02:55.870 --> 03:00.390 are passed to the default for matter and then displayed. 03:00.640 --> 03:03.780 Let's run the code with the following command. 03:03.780 --> 03:10.220 It seems that the script file is in the current directory and we can see the result. 03:10.270 --> 03:17.260 We can see that there is no output for the variable name and parse for it on the screen. 03:17.440 --> 03:23.260 If you want to display the wellness of name and the password you can just anchorman's the lines with 03:23.250 --> 03:25.490 the right host command left. 03:25.570 --> 03:33.080 If you want the reli of phosphor to rebuild to be visible in clear text just use the technique which 03:33.080 --> 03:38.550 I've shown in the Brisard in less than on the read host command left. 03:38.610 --> 03:46.870 Now as I think the most useful of right host is left foreground color and background color parameters 03:47.110 --> 03:55.330 which allow you to alter the color on the text or the background when written to the host using the 03:55.570 --> 04:03.070 right host command let the perimeter support the named Koehler's which are enumerated in the following 04:03.070 --> 04:03.860 table. 04:03.910 --> 04:08.810 When you saw the right host command letters to highlight Romes to the user. 04:08.950 --> 04:10.230 For example instead of. 04:10.230 --> 04:18.340 You can read hosta alone to read in data from the user you can use the right host command glad to display 04:18.340 --> 04:26.770 a more visible broomed to the user then use the read host command letter and capturing the user input 04:26.830 --> 04:28.180 in a variable. 04:28.180 --> 04:32.080 Let's take a look at that for an example that shows you how. 04:32.110 --> 04:40.060 Notice that there are no new line parameters used to keep the cursor at the end of the line where the 04:40.060 --> 04:41.920 text was fired. 04:42.070 --> 04:46.200 Well are the right host C'mon left is displayed. 04:46.250 --> 04:54.040 Just to let the foreground color and background color parameters are used to highlight the prompt to 04:54.040 --> 04:55.100 the user. 04:55.120 --> 05:01.540 You can of course abbreviate the name so the foreground color around background color or lower parameters 05:01.990 --> 05:07.270 is just type in F Oh and B.A instead of four. 05:07.270 --> 05:15.510 Ground color and background color so you may want to use the right host Come on left to display Vorderman 05:15.540 --> 05:20.530 and information messages in particular color combinations. 05:20.530 --> 05:22.000 The following code. 05:22.180 --> 05:22.550 Right. 05:22.550 --> 05:24.130 Host color test. 05:24.230 --> 05:34.120 The best one displays ever wardman in red text on white and information in black text also on white. 05:34.240 --> 05:44.070 Output shows the results after entering a password to six characters or shorter them and in a box for 05:44.200 --> 05:46.500 the required 8 characters. 05:46.520 --> 05:55.810 The wearable Lohmann office set initially falls and while loop tests whether or not the lens property 05:56.200 --> 06:00.100 or the password wearable is at least eight characters. 06:00.100 --> 06:08.740 If it is then the value of long enough is set to true if not have worn and is displayed in red text 06:08.740 --> 06:16.660 on a white background and the user was prompted to re-enter the user name and password. 06:16.840 --> 06:25.180 Once the past for two of the specified lands has been entered there while loop exist and an information 06:25.180 --> 06:31.090 message specified in the following code is displayed in black text on white.