ikisite-delete-unfinished-site: 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 Debian possible default full paths are:

/usr/bin/ikisite-delete-unfinished-site - from package: ikiwiki-hosting-web

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

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