jfs_fscklog: 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:

/sbin/jfs_fscklog - from package: jfsutils

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

On Debian possible default full paths are:

/sbin/jfs_fscklog - from package: jfsutils

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

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