z/OS V1R9.0 UNIX System Services Command ... - Christian Grothoff

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mailx
Startup Files
~< !command
Runs the given shell command and adds the standard output of that
command at this point in the message. For example, your message might
contain:
My program is giving me this odd output:
~< !prog
What do you think is causing it?
~: mail_command
Runs the given command-mode mail_command. This is valid only when you
entered mailx in command mode and then went into input mode to
compose a message.
~_ mail_command
Is the same as the ~: command.
~! command
Runs the given shell command. For example, you can use:
>~! ls
to get a list of files in the working directory. The shell that is invoked to run
the command is given by the SHELL environment variable. If the bang
variable is set, mailx replaces each unescaped exclamation mark (!) in
command with the command run by the previous command or ~! command
escape.
~ command
Pipes the current message through the specified shell command. If the
command ends with a successful exit status, the output of the command
replaces the text of the current message. For example:
~|fmt
fills and justifies the lines of your message and replaces the message with
the formatted message. ~| uses the shell given by the SHELL environment
variable to run command.
When you run mailx in command mode, mailx does the following:
v Sets all variables to their default values. mailx processes command-line options,
using them to override any corresponding default values.
v Imports appropriate external environment variables, using them to override any
corresponding default values.
v Reads commands from the system startup file, /etc/mailx.rc. This sets up
variable values and definitions that should be common to all users. If you do not
want mailx to read the system startup file, use the –n option on the mailx
command line.
v After reading and processing the system startup file, mailx does the same with a
personal startup file, which is MAILRC by default. This is a file in your HOME
directory. The name of the file is .mailrc.
Startup files typically set up display options and define aliases. However, any
command is valid in a startup file except for the following:
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384 z/OS V1R9.0 UNIX System Services Command Reference