make_strings: command not found

Maybe Your $PATH variable doesn't contain the default paths? echo $PATH should give something like:

[root@server ~]# echo $PATH
/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin

If it's empty, You may set the PATH variable with this command

export PATH="/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin"

On CentOS possible default full paths are:

/usr/bin/make_strings - from package: gnustep-base

You may install the required package with command yum install {package}

On Debian possible default full paths are:

/usr/bin/make_strings - from package: gnustep-base-runtime

You may install the required package with command apt-get install {package}

Error in other languages:
make_strings: bevel nie gevind nie
make_strings: comandă negăsită
make_strings: comando não encontrado
make_strings: commande introuvable
make_strings: command not found
make_strings: käsku ei ole
make_strings: không tìm thấy lệnh
make_strings: komanda nerasta
make_strings: Kommando nicht gefunden.
make_strings: kommandot finns inte
make_strings: komut yok
make_strings: nie znaleziono polecenia
make_strings: níor aimsíodh an t-ordú
make_strings: no se encontró la orden
make_strings: no s'ha trobat l'ordre
make_strings: opdracht niet gevonden
make_strings: parancs nem található
make_strings: perintah tidak ditemukan
make_strings: príkaz nenájdený
make_strings: příkaz nenalezen
make_strings: команда не найдена
make_strings: командата не е открита
make_strings: 命令找不到
make_strings: コマンドが見つかりません