Assuming i have a line that i want to add to a file without opening an editor.
How could i append this line
alias list='ls -cl --group-directories-first'
to this file
config.fish
Command Line – How to Append Line to a Text File Without Opening an Editor
bashcommand lineredirectscriptstext-editor
Related Solutions
Use:
nano /etc/apache2/apache2.conf
(you may need to use sudo)
This will give you a command line text editor that works much like normal text editors. Use the arrow keys to navigate. Backspace, enter, etc. work as normal.
To save, press Ctrl+O and use Ctrl+X to exit. For help, press Ctrl+G from inside nano, or use man nano.
It should look something like this:
You can use
sed 's/vm.swappiness=[0-9]*/vm.swappiness=1/g' /etc/sysctl.conf
If you don't mind how many digits your number has.
If you want a maximum of 3 digits, you need extended (modern) regular expressions rather than basic regular expressions (BRE's). You then need to provide the -E parameter
sed -E 's/vm.swappiness=[0-9]{1,3}/vm.swappiness=1/g' /etc/sysctl.conf
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Best Answer
You can append a line of text to a file by using the
>>operator:or in your case
Please take note of the different types of quotes.