tsocks: 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/tsocks - from package: tsocks

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

On Debian possible default full paths are:

/usr/bin/tsocks - from package: tsocks

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

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