Bash still cut the last part of the third parameter even if I attempted `$*` and `$@`

Question

I have tried the following questions:

• Propagate all arguments in a bash shell script
• How may I echo all but the last parameter in bash?

I was running docker-compose that checks Dockerfile.

See my script:

archlinux="pacman"
get_package_manager_install()
{
  if [[ -x "$(command -v $1)" ]]; then
    "$1 $2 $3"
  else

    echo "Gestor do pacote desconhecido" &>/dev/null;
  fi
}
get_package_manager_install "$archlinux"     "-S --noconfirm --needed" "ca-certificates curl git p7zip wget unzip zstd"
get_package_manager_install "$archlinux"     "-S --noconfirm --needed" "htop micro neofetch neovim zsh"
get_package_manager_install "$archlinux"     "-S --noconfirm --needed" "luit xdotool xdriinfo xorg-appres xorg-iceauth xorg-xcmsdb xorg-xgamma xorg-sessreg xorg-xdpyinfo xorg-xev xorg-xfd xorg-xfontsel xorg-xhost xorg-xkbcomp xorg-xkill xorg-xlsatoms xorg-xlsclients xorg-xlsfonts xorg-xmessage xorg-xmodmap xorg-xprop xorg-xrandr xorg-xrdb xorg-xrefresh xorg-xset xorg-xvidtune xorg-xvinfo xorg-xwininfo"

Observe that I also already have replaced "$1 $2 $3" with $@ or $*. I also attempted $(echo "$@") and $(echo "${@}")

I also have already replaced " " with ' ' in the last parameter, but unsuccessfully.

It cut the last part of the parameter, for example, git p7zip wget unzip zstd and whole htop micro neofetch neovim zsh will not be installed.

Answer 1

You need -S, --noconfirm, --needed and the packages to be passed as separate arguments to pacman, so:

archlinux="pacman"
get_package_manager_install()
{
  if command -v -- "$1" > /dev/null 2>&1; then
    "$@"
  else

    echo >&2 "Gestor do pacote desconhecido"
    return 1
  fi
}
get_package_manager_install "$archlinux" -S --noconfirm --needed ca-certificates curl git p7zip wget unzip zstd

Where get_package_manager_install is passed all those as separate arguments, and get_package_manager_install passes them as-is to pacman.

If you wanted get_package_manager_install to take only 3 arguments, and the second and third to be split on space characters to generate the list of arguments to pass to pacman, you could use the split+glob operator (which you used already by mistake by forgetting to quote $1 in your code), after having disabled the glob part and set $IFS to space:

get_package_manager_install() {
  if command -v -- "$1" > /dev/null 2>&1; then
    (
      set -o noglob
      IFS=' '
      exec "$1" $2 $2
    )
  else        
    echo >&2 "Gestor do pacote desconhecido"
    return 1
  fi
}
get_package_manager_install "$archlinux" 

                            '-S --noconfirm --needed'
                            'ca-certificates curl git p7zip wget unzip zstd'

Though I can't imagine why you'd want to do that.

It's also not clear to me why you'd name the variable holding the name of the package manager archlinux which is the name of a Linux distribution.