I've a script that send an email to user. I need to add a variable (name of new user) to subject. My example:
a="John";echo|mutt -s welcome$a -e 'my_hdr From:info@example.com <info@example.com>' test@example.com
Obviously this runs but the subject is: welcomeJohn. I need a space between welcome and John. A real space doesn't works, change from a="John" to a=" John" doesn'run... Either programmatically add a space to variable or put all subject to variable.
Try enclosing subject with double quotes
a="John Foo";echo|mutt -s "welcome $a" -e 'my_hdr From:info@example.com <info@example.com>' test@example.com
It will send a mail with subject welcome John Foo. Change your command for required subject. You are free put spaces anywhere in subject or variable value now.
Note: It's standard practice to specify any input, variable for command line arguments to linux commands with proper quotes to mitigate white space issues.
'' for literal string
"" for variable substitutions