truncate:tldr:a301d
truncate: Shrink the file by 2 GiB, by removing data from the end of file.
$ truncate --size -${2G} ${filename}
try on your machine
The command "truncate --size -${2G} ${filename}" is used to change the size of a file to a specific value.
- "truncate" is the command itself.
- "--size" is an option that specifies the size to which the file should be changed.
- "-${2G}" is the value being passed to the "--size" option. It uses a variable or value (denoted by ${}) called "2G", which represents 2 gigabytes. The minus sign (-) indicates that the file should be reduced in size by 2 gigabytes.
- "${filename}" refers to the name of the file that needs its size changed. It should be replaced with the actual filename.
Overall, this command is used to truncate or reduce the size of a file by 2 gigabytes.
This explanation was created by an AI. In most cases those are correct. But please always be careful and
never run a command you are not sure if it is safe.