systemd-escape: command not found

Have You tried accessing the binary with the full path?

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:

/bin/systemd-escape - from package: systemd

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