entrigraph: 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:

/usr/bin/entrigraph - from package: liwc

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