yaz-json-parse: 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/yaz-json-parse - from package: yaz

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