kcharselect: 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/kcharselect - from package: kdeutils

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

On Debian possible default full paths are:

/usr/bin/kcharselect - from package: kcharselect

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

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