dbcolhisto: 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/dbcolhisto - from package: perl-Fsdb

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

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