sotruss: command not found

Have You tried accessing the binary with the full path?

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/sotruss - from package: libc-dev-bin

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