asp.net mvc barcode reader $ PS1="->" -> export PS1 in Software

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$ PS1="->" -> export PS1
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You can change the prompt to be any set of characters, including a string, as shown in the next example:
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$ PS1="Please enter a command: " Please enter a command: export PS1 Please enter a command: ls mydata /reports Please enter a command:
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The PS2 variable holds the secondary prompt symbol, which is used for commands that take several lines to complete. The default secondary prompt is >. The added command lines begin with the secondary prompt instead of the primary prompt. You can change the secondary prompt just as easily as the primary prompt, as shown here:
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$ PS2="@"
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Like the TCSH shell, the BASH shell provides you with a predefined set of codes you can use to configure your prompt. With them you can make the time, your user name, or your directory pathname a part of your prompt. You can even have your prompt display the history event number of the current command you are about to enter. Each code is preceded by a \ symbol. \w represents the current working directory, \t the time, and \u your user name. \! will display the next history event number. In the next example, the user adds the current working directory to the prompt:
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$ PS1="\w $" /home/dylan $
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The codes must be included within a quoted string. If no quotes exist, the code characters are not evaluated and are themselves used as the prompt. PS1=\w sets the prompt to the characters \w, not the working directory. The next example incorporates both the time and the history event number with a new prompt:
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$ PS1="\t \! ->"
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The following table lists the codes for configuring your prompt: Prompt Codes \! \$ \d \s \t \u \w Description Current history number. Use $ as prompt for all users except the root user, which has the # as its prompt. Current date. Shell currently active. Time of day. User name. Current working directory.
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If CDPATH is undefined, then when the cd command is given a directory name as its argument, it searches only the current working directory for that name. If CDPATH is defined, however, cd also searches the directories listed in CDPATH for that directory name. If the directory name is found, cd changes to that directory. This is helpful if you are working on a project in which you constantly must change to directories in another part of the file system. To change to a directory that has a pathname very different from the one you are in, you would need to know the full pathname of that directory. Instead, you could simply place the pathname of that directory's parent in CDPATH. Then, cd automatically searches the parent directory, finding the name of the directory you want. Note Notice that you assign to CDPATH the pathname of the parent of the directory you want to change to, not the pathname of the directory itself. Using the HOME variable to specify the user's home directory part of the path in any new pathname added to CDPATH is advisable. This is because the pathname for your home directory could possibly be changed by the system administrator during a reorganization of the file system. HOME will always hold the current pathname of the user's home directory. In the next example, the pathname /home/chris/letters is specified with $HOME/letters:
$ CDPATH=$CDPATH:$HOME/letters $ export CDPATH $ echo $CDPATH :/home/chris/letters
Several shell special variables are used to set values used by network applications, such as Web browsers or newsreaders. NNTPSERVER is used to set the value of a remote news server accessible on your network. If you are using an ISP, the ISP usually provides a news server you can access with your newsreader applications. However, you first have to provide your newsreaders with the Internet address of the news server. This is the role of the NNTPSERVER. News servers on the Internet usually use the NNTP protocol. NNTPSERVER should hold the address of such a news server. For many ISPs, the news server address is a domain name that begins with nntp. The following example assigns the news server address nntp.myservice.com to the NNTPSERVER special variables. Newsreader applications automatically obtain the news server address from NNTPSERVER. Usually, this assignment is placed in the shell initialization file, .bash_profile, so it is automatically set each time a user logs in.
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