kcookiejar4: 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 CentOS possible default full paths are:

/usr/bin/kcookiejar4 - from package: kdelibs

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

On Debian possible default full paths are:

/usr/bin/kcookiejar4 - from package: kdelibs-bin

You may install the required package with command apt-get install {package}
Error in other languages:
kcookiejar4: bevel nie gevind nie
kcookiejar4: comandă negăsită
kcookiejar4: comando não encontrado
kcookiejar4: commande introuvable
kcookiejar4: command not found
kcookiejar4: käsku ei ole
kcookiejar4: không tìm thấy lệnh
kcookiejar4: komanda nerasta
kcookiejar4: Kommando nicht gefunden.
kcookiejar4: kommandot finns inte
kcookiejar4: komut yok
kcookiejar4: nie znaleziono polecenia
kcookiejar4: níor aimsíodh an t-ordú
kcookiejar4: no se encontró la orden
kcookiejar4: no s'ha trobat l'ordre
kcookiejar4: opdracht niet gevonden
kcookiejar4: parancs nem található
kcookiejar4: perintah tidak ditemukan
kcookiejar4: príkaz nenájdený
kcookiejar4: příkaz nenalezen
kcookiejar4: команда не найдена
kcookiejar4: командата не е открита
kcookiejar4: 命令找不到
kcookiejar4: コマンドが見つかりません