pjinfo: 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/pjinfo - from package: ctsim

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

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