Note book to help you and me remember some tricks

Category shell script

Shell script special variables ordered by frequency of used

$n Where n is a positive integer and takes values from 1 to a greater value not restricted. n correspond to the position of an argument givent to a script or to a function $? Exit status of the last… Continue Reading →

Why CRLF on Linux can sometimes be displayed as ^M with line feed?

Firstly, it’s good to remember these following points: CR is for Carriage Return LF is for Line Feed On windows line endings are represented by CRLF (CR+LF) On Linux line endings are represented by LF In a shell script you… Continue Reading →

Send an email on Linux with CLI or shell script without installing anything (no ssmtp required)

Prerequisites Basic example without encoding headers Case of an existing SMTP server without authentication (smtpserver.nicodevlog.com can be replaced by the domain name of your smtp server or its IP address): At the end you can see “\nSubject: TEST send mail… Continue Reading →

Shell script – Variables evaluation : display line endings \n and don’t cut your parameter function

How to pass string with several words and line endings \n as a parameter to a function Solution : Second test rst test : $myvar will be replaced by it’s value that contains a lot of words with spaces and… Continue Reading →

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