Le mer. 20 nov. 2024 à 10:37, lacsaP Patatetom <patate...@gmail.com> a écrit :
> hi, > > I'd like to use an executable file as a configuration file for `qemu` > using a shebang : let me explain. > > I currently store my configuration like this in `configuration.qemu` : > ``` > -argument > > - argument -option > > -etc... > ``` > > and I call `qemu` like this and it works as expected : > `$ qemu $(<configuration.qemu)` > > which corresponds to the following command line : > `$ qemu -argument -argument -option -etc...` > > I can also add additional/temporary arguments/options on the command line > if I wish. > > I'd like to add comments to this configuration file : > ``` > # this is a configuration file for... > > -argument > > # this option... > -argument -option > > # add your own arguments/options here... > -etc... > ``` > > but passed directly in this way, these comments become arguments/options > for `qemu` : > ``` > $ qemu $(<configuration.qemu) > qemu-system-x86_64: # this is a configuration file for...: Could not open > '# this is a configuration file for...': No such file or directory > ``` > > I can eliminate them using `grep` like this : > `$ qemu $(grep -v '^#' configuration.qemu)` > > but it seems to me complicated and time-consuming to enter. > > so I wanted to use `grep` as shebang : > ``` > #!/usr/bin/grep -v '^#' > # this is a configuration file for... > > -argument > > # this option... > -argument -option > > # add your own arguments/options here... > -etc... > ``` > > but it doesn't work as I'd hoped : > ``` > $ qemu $(./configuration.qemu) > /usr/bin/grep: invalid option -- ' ' > Usage: grep [OPTION]... PATTERNS [FILE]... > Try 'grep --help' for more information. > ``` > > does anyone have an explanation or another way to get a commented > configuration file ? > > regards, lacsaP. > `#!/usr/bin/env -S grep -v '^#'` as shebang works like a charm :-) (with env (GNU coreutils) 9.5) regards, lascaP.
