pg_restore: 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/pg_restore - from package: postgresql

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

On Debian possible default full paths are:

/usr/bin/pg_restore - from package: postgresql-client-common
/usr/lib/postgresql/9.4/bin/pg_restore - from package: postgresql-client-9.4

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

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