bootstrap.jar: 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/share/tomcat6/bin/bootstrap.jar - from package: tomcat6
/usr/share/tomcat/bin/bootstrap.jar - from package: tomcat

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

On Debian possible default full paths are:

/usr/share/tomcat7/bin/bootstrap.jar - from package: tomcat7-common
/usr/share/tomcat8/bin/bootstrap.jar - from package: tomcat8-common

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

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