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

Question

Is something like this:

cat \"Some text here.\" > myfile.txt

Possible? Such that the contents of myfile.txt would now be overwr

Answer 1

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 < /sys/devices/system/cpu/cpu1/cpufreq/scaling_governor <

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 <

with

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

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