fcomp: 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/fcomp - from package: fhist

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

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