ipcress: 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/ipcress - from package: exonerate

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

On Debian possible default full paths are:

/usr/bin/ipcress - from package: exonerate

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

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