chrid.dat: 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/share/doc/r-cran-qtl/examples/bin/test/chrid.dat - from package: r-cran-qtl

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