tl-parser: 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/tl-parser - from package: telegram-cli

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

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