kdevplatform_shell_environment.sh: 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 Debian possible default full paths are:

/usr/bin/kdevplatform_shell_environment.sh - from package: kdevplatform8-libs

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

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