tracemerge: 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/tracemerge - from package: libtrace-tools

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

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