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Full Discussion: If else condition
Top Forums UNIX for Dummies Questions & Answers If else condition Post 302952489 by bakunin on Wednesday 19th of August 2015 10:50:50 AM
Old 08-19-2015
Quote:
Originally Posted by RudiC
Use options like -A, -E, -T, -v to show control characters.
Yes - if the system uses GNU-cat (or some other non-standard-conforming variant). POSIX-cat has only one valid option: "-u" for unbuffered operation.

Three ways to avoid and/or manage "^M" characters:

First, DO NOT WRITE YOUR SCRIPTS IN WINDOWS AND THEN FTP THEM TO UNIX! This is how the overwhelming majority of misplaced ^M-characters come to pass.

Second, open the file in questsion in vi and then enter: ":set list". This will display non-printable characters: "^I" is a tab, "^M" is a (Windows-style) line feed, "$" is a newline character, etc.. use the command ":set nolist" to switch back to normal display.

Third, control your variable definitions:

Code:
var='foo
bar'

will place a "^M" character between "foo" and "bar".

I hope this helps.

bakunin
 

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LEARN ABOUT NETBSD

ugensa

UGENSA(4)						   BSD Kernel Interfaces Manual 						 UGENSA(4)

NAME

     ugensa -- USB generic serial adapter

SYNOPSIS

     ugensa*  at uhub?
     ucom*  at ugensa?

HARDWARE

     The ugensa driver supports the following adapters (or their USB device portion, for adaptors that contain a USB host controller, hub and a
     USB device):

	   Airprime PC5220
	   Novatel FlexPak GPS receiver
	   Qualcom CDMA MSM (found in Kyocera KPC650 EVDO interface)
	   Qualcom Inc. CDMA AC8700 (found in the ZTE 1x EVDO interface)
	   Sierra AirCard 580
	   Sierra AirCard 595
	   Sierra AirCard 875 [not tested]
	   Sierra Wireless EM5625 [not tested]
	   Sierra Wireless MC5720 [not tested]
	   Sierra Wireless MC5725 [not tested]
	   Sierra Wireless MC8755 [not tested]
	   Sierra Wireless MC8755 [not tested]
	   Sierra Wireless MC8755 [not tested]
	   Sierra Wireless MC8765 [not tested]
	   Sierra Wireless MC8775 [not tested]
	   Novatel Wireless Merlin CDMA (found in Verizon V620) [not tested]
	   Novatel ExpressCard [not tested]
	   Novatel Wireless S720 [not tested]
	   Novatel Ovation U720 [not tested]
	   Novatel Merlin XU870 HSDPA ExpressCard [not tested]
	   Novatel Merlin ES620 [not tested]
	   Dell/Novatel Wireless HDSPA modem
	   Dell W5500 HDSPA modem [not tested]
	   AnyDATA ADU-E500A [not tested]

DESCRIPTION

     The ugensa driver provides support for the USB-to-RS-232 Bridge chip used by various vendors.

     The device is accessed through the ucom(4) driver which makes it behave like a tty(4).

SEE ALSO

     tty(4), ucom(4), usb(4)

HISTORY

     The ugensa driver first appeared in NetBSD 3.0.

BSD
								 December 14, 2009							       BSD
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