What is print command in linux

How do I print a Unix statement?

Typically, when writing bash scripts, we use echo to print to the standard output. echo is a simple command but is limited in its capabilities. To have more control over the formatting of the output, use the printf command. The printf command formats and prints its arguments, similar to the C printf() function.

How do I print a shell script?

Moreover, we have also used the printf command to serve the very same purpose. After typing in this program in your Bash file, you need to save it by pressing Ctrl +S and then close it. In this program, the echo command and the printf command is used to print the output on the console.

What is the command available to print in Unix?

To print a document on the default printer, just use the lp command followed by the name of the file you want to print. With the -n option, the lp command allows you to specify the number of copies of a printout you want. $ lp -n 11 agenda. To cancel a print job, you can use the cancel or lprm command.

What is print command in Linux?

In Linux, different commands are used to print a file or output. Printing from a Linux terminal is a straightforward process. The lp and lpr commands are used to print from the terminal. And, the lpg command is used to display queued print jobs.

How do you print in Unix?

What does this Unix command do?

What Unix command will control the default file permissions?

What is “type” command in Unix?

Источник

print command instead of echo in linux

Can I have the same output with print command. I actually went through their manuals, where $ man print describes it as Run-mailcap-programs which term I never heard before. And came to know that it is used to find the correct program to open a file with, based on MIME.

So is there any way to print a simple line using print alone instead of echo ?

Found similar kind of problem at Need to assign the contents of a text file to a variable in a bash script, but people suggesting echo over print there. I tried following, but got issues.

$ print --"text/plain" "prayag works on JVM" Warning: unknown mime-type for "prayag works on JVM" -- using "application/octet-stream" Error: no such file "prayag works on JVM" 

$ print --"text/plain" application.properties Warning: unknown mime-type for "application.properties" -- using "application/octet-stream" Error: no "print" mailcap rules found for type "application/octet-stream" 

$ awk '' application.properties prayag works on JVM 

3 Answers 3

You’re confusing many things here, let me try and tease this apart for you.

1. awk » . This has nothing to do with the print you’re asking about. awk is a dynamic programming language which contains its own commands, of which print is one of them.
2. print —«text/plain» «prayag works on JVM» and other forms The command print is for displaying files per the contents of the mailcap file, using the designated «handler» for each particular file type, not for printing strings to the screen. excerpt from the print man page

run-mailcap, view, see, edit, compose, print — execute programs via entries in the mailcap file run-mailcap (or any of its aliases) will use the given action to process each mime-type/file in turn. Each file is spec‐ ified as its mime-type, its encoding (e.g. compression), and filename together, separated by colons. If the mime-type is omitted, an attempt to determine the type is made by trying to match the file’s extension with those in the mime.types files. If the encoding is omitted, it will also be determined from the file’s extensions. Currently supported encodings are gzip (.gz), bzip (.bz), bzip2 (.bz2), and compress (.Z). A filename of «-» can be used to mean «standard input», but then a mime-type must be specified.

$ type -a echo echo is a shell builtin echo is /bin/echo 

Example

zsh % print "hello world" hello world 

printf

Perhaps you’re looking for the command printf ?

$ printf "%s\n" "hello stringy world" hello stringy world $ printf "this is some padded digits: %04d\n" "10" this is some padded digits: 0010 

The command printf takes a formatting set of special characters so that you can instruct it how you want to display things such as strings or digits etc. See the man page for printf .

mailcap

So a lot of people are probably oblivious as to the file /etc/mailcap . This file contains mime-types (headers from files which identifies what type of file a file is). You can then create entries in this mailcap file which designate what tool to use to open a particular mime-type for a file.

Example

text/html; /usr/bin/sensible-browser '%s'; description=HTML Text; nametemplate=%s.html application/x-troff-man; /usr/bin/nroff -mandoc -Tutf8; copiousoutput; print=/usr/bin/nroff -mandoc -Tutf8 | print text/plain:- application/x-ogg; /usr/bin/mplayer '%s'; description="OggVorbis Audio" application/ogg; /usr/bin/mplayer '%s'; description="OggVorbis Audio" audio/mpeg; /usr/bin/mplayer '%s'; description="MPEG Audio Format" audio/x-mpegurl; /usr/bin/mplayer '%s'; description="Icecast Playlists" audio/x-ms-wax; /usr/bin/mplayer '%s'; description="Audio Format" 

The above lines say that if you get a file with the mime-type audio/mpeg , then use the tool /usr/bin/mplayer to open this file.

These rules are generally used by the email tool, but other tools can take advantage of these entries within the mailcap file as well.

If you’re interested in learning more about mime-types or mailcap see the following references.

Источник

What is print command in Unix?

The command print is for displaying files per the contents of the mailcap file, using the designated “handler” for each particular file type, not for printing strings to the screen. excerpt from the print man page. run-mailcap, view, see, edit, compose, print – execute programs via entries in the mailcap file.

How do I print a Unix statement?

Typically, when writing bash scripts, we use echo to print to the standard output. echo is a simple command but is limited in its capabilities. To have more control over the formatting of the output, use the printf command. The printf command formats and prints its arguments, similar to the C printf() function.

Which command in UNIX with examples?

Command	Description
ls – al	Lists files and directories with detailed information like permissions, size, owner, etc.
cat > filename	Creates a new file
cat filename	Displays the file content
cat file1 file2 > file3	Joins two files (file1, file2) and stores the output in a new file (file3)

How do I print on Linux?

How to Print from a Linux

1. Open the page you want to print within your html interpreter program.
2. Select Print from the File dropdown menu. A dialogue box will open.
3. Click OK if you wish to print to the default printer.
4. Enter the lpr command as above if you wish to select a different printer.

What is printing command?

Some Windows systems provide a print command, which you can use to print on a printer you defined in Adding a z/OS printer to your Windows system. The print command is used to print a file directly without using a Windows application that supports printing.

How do I print a Shell statement?

printf command -n : It is a FORMAT controls the output as in C printf. \n is use to print new line.

What is Unix code?

Unix (/ˈjuːnɪks/; trademarked as UNIX) is a family of multitasking, multiuser computer operating systems that derive from the original AT Unix, whose development started in the 1970s at the Bell Labs research center by Ken Thompson, Dennis Ritchie, and others.

What is Unix commands?

Unix commands are inbuilt programs that can be invoked in multiple ways. A Unix terminal is a graphical program that provides a command-line interface using a shell program.

How do I setup a printer on Linux?

1. Click “System”, “Administration”, “Printing” or search for “Printing” and choose the settings for this.
2. In Ubuntu 18.04, choose “Additional Printer Settings…”
3. Click “Add”
4. Under “Network Printer”, there should be the option “LPD/LPR Host or Printer”
5. Enter the details.
6. Click “Forward”

How do you print in Unix?

What does this Unix command do?

What Unix command will control the default file permissions?

What is “type” command in Unix?

Источник