fsck-larch: 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/fsck-larch - from package: python-larch

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

On Debian possible default full paths are:

/usr/bin/fsck-larch - from package: python-larch

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

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