dbcol: 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/dbcol - from package: perl-Fsdb

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

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