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...
Here's another way -
cat > outfile.txt
>Enter text
>to save press ctrl-d
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.
Write multi-line text with environment variables using echo
:
echo -e "
Home Directory: $HOME \n
hello world 1 \n
hello world 2 \n
line n... \n
" > file.txt
simply pipeline echo with cat
For example
echo write something to file.txt | cat > file.txt
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.
Another way to write text to file using cat would be something like this
cat >file.txt <<< Write something here
Sounds like you're looking for a Here document
cat > outfile.txt <<EOF
>some text
>to save
>EOF
cat
can also be used following a |
to write to a file, i.e. pipe feeds cat a stream of data
For text file:
cat > output.txt <<EOF
some text
some lines
EOF
For PHP file:
cat > test.php <<PHP
<?php
echo "Test";
echo \$var;
?>
PHP
The Solution to your problem is :
echo " Some Text Goes Here " > filename.txt
But you can use cat command if you want to redirect the output of a file to some other file or if you want to append the output of a file to another file :
cat filename > newfile -- To redirect output of filename to newfile
cat filename >> newfile -- To append the output of filename to newfile
You can do it like this too:
user@host: $ cat<<EOF > file.txt
$ > 1 line
$ > other line
$ > n line
$ > EOF
user@host: $ _
I believe there is a lot of ways to use it.
Source: Stackoverflow.com