Can linux cat command be used for writing text to file?

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Is something like this:

cat "Some text here." > myfile.txt

Possible? Such that the contents of myfile.txt would now be overwritten to:

Some text here.

This doesn't work for me, but also doesn't throw any errors.

Specifically interested in a cat-based solution (not vim/vi/emacs, etc.). All examples online show cat used in conjunction with file inputs, not raw text...

That's what echo does:

echo "Some text here." > myfile.txt

Can linux cat command be used for writing text to file?, Also, you can use cat command for quickly creating a file. The cat command can read and write data from standard input and output devices. It has three main functions related to manipulating text files: creating them, displaying them, and  The cat command is one of the most widely used commands in Linux. The name of the cat command comes from its functionality to concatenate files. It can read and concatenate files, writing their contents to the standard output. If no file is specified or if the input file name is specified as a single hyphen (-) it reads from the standard input.

Sounds like you're looking for a Here document

cat > outfile.txt <<EOF
>some text
>to save
>EOF

Linux Cat Command Usage with Examples, Awaits input from user, type desired text and press CTRL+D (hold down Ctrl You can see content of file with following cat command. up very fast, we can use parameters more and less with cat command as show above. You can use cat to make copies of text files in much the same way. cat sends its output to stdout (standard output), which is usually the terminal screen. However, you can redirect this output to a file using the shell redirection symbol " > ".

Here's another way -

cat > outfile.txt
>Enter text
>to save press ctrl-d

13 Basic Cat Command Examples in Linux, You can use the cat command to append data or text to a file. The cat command can also append binary data. The main purpose of the cat  You can use the cat command to append data or text to a file. The cat command can also append binary data. The cat command can also append binary data. The main purpose of the cat command is to display data on screen (stdout) or concatenate files under Linux or Unix like operating systems.

I use the following code to write raw text to files, to update my CPU-settings. Hope this helps out! Script:

#!/bin/sh

cat > /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor <<EOF
performance
EOF

cat > /sys/devices/system/cpu/cpu1/cpufreq/scaling_governor <<EOF
performance
EOF

This writes the text "performance" to the two files mentioned in the script above. This example overwrite old data in files.

This code is saved as a file (cpu_update.sh) and to make it executable run:

chmod +x cpu_update.sh

After that, you can run the script with:

./cpu_update.sh

IF you do not want to overwrite the old data in the file, switch out

cat > /sys/devices/system/cpu/cpu1/cpufreq/scaling_governor <<EOF

with

cat >> /sys/devices/system/cpu/cpu1/cpufreq/scaling_governor <<EOF

This will append your text to the end of the file without removing what other data already is in the file.

Linux / Unix: Use Cat Command To Append Data To a File, Linux cat command help and information with cat examples, syntax, related You can use cat to make copies of text files in much the same way. will read the contents of mytext.txt and mytext2.txt and write the combined  The cat command display file contents to a screen. Cat command concatenate FILE(s), or standard input, to standard output. With no FILE, or when FILE is -, it reads standard input. Also, you can use cat command for quickly creating a file. The cat command can read and write data from standard input and output devices.

cat > filename.txt

enter the text until EOF for save the text use : ctrl+d

if you want to read that .txt file use

cat filename.txt

and one thing .txt is not mandatory, its for your reference.

Linux cat command help and examples, If you a regular Linux command line user, I am sure you must have used the cat cat file1.txt You can also use cat to copy the contents of one file to another file. of writing -vET in the command, you can just use the -A command line option. A. Using cat command with standard input. When used without any argument, the cat command will read data from its standard input and write them to its standard output— which is mostly useless … unless you are using some option to transform the data.

10 Linux Cat Command Examples for Beginners, The Linux cat command is a useful tool for every system administrator or Using the cat command you can quickly create a file and put text into it. with years of experience in IT as a writer, marketer, and Linux enthusiast. The cat command in Linux allows you to concatenate files and display the output to the standard output; in most cases this is a screen. One of the most common uses of cat is to display a file to the screen and also to create a file on the fly and allow basic editing straight at the terminal.

How to Use the Linux Cat Command – Tutorial and Examples, Cat(concatenate) command is very frequently used in Linux. It will show content with line number example:-cat-n geeks.txt 1)This is geeks 2)A unique array 7) Cat command can append the contents of one file to the end of another file. of writing -vET in the command, you can just use the -A command line option. One difference between using this command and the cat command we covered in the last section is that, while the cat command lets you enter text into your file immediately, using the touch command does not. Another big difference is that the touch command lets you create multiple new files with a single command.

Cat command in Linux with examples, cat is a standard Unix utility that reads files sequentially, writing them to standard output. cat can be used to pipe a file to a program that expects plain text or binary tac is a Linux command that allows viewing files line-by-line backwards.

Comments
  • Bonus: echo "Some text here." >> myfile.txt to append to the end o the file
  • If you need to use double quotes in your text, encompass the whole thing in single quotes. This is useful for .json and the likes, e.g. echo '{"info1": "123456"}' > info.json
  • On linux Kernel 2.6.32 centos 6 I had to omit the > characters to get expected output.
  • The > characters represent the default value of $PS2; they show up automatically, and are not meant to be typed. If you have a different value for $PS2, that will show up instead.
  • what Linux are you using? and are you using the default terminal?
  • This command is really useful when you're trying to write an output of a command into a file. For instance cat > docker-inspect.txt <<< docker inspect image` `