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Full Discussion: && and || operators
Top Forums Shell Programming and Scripting && and || operators Post 302956129 by pandeesh on Saturday 26th of September 2015 09:10:46 PM
Old 09-26-2015
Question && and || operators
Hello all,

i am curious how we can implement the ternary operator with multiple commands in else part. in my case, only the first command in the "else" part is reachable and the rest is ignored.
Code:
[[ `$adb_path devices|wc -l` -gt 2 ]] && echo "there's a device connected" || (echo "please connect a device" && exit -1) 

[[ `$adb_path devices|wc -l` -gt 2 ]] && echo "there's a device connected" || (echo "please connect a device";exit -1)

in both the cases, the
Code:
exit

is not reachable always and the code continues without exiting.

please help me how to achieve this with this syntax. It can be easily rewritten using if-else construct. But, I would like to know how we can accomplish this using this syntax.

Thanks
 

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LEARN ABOUT DEBIAN

ciptool

CIPTOOL(1)																CIPTOOL(1)

NAME

       ciptool - Bluetooth Common ISDN Access Profile (CIP)

SYNOPSIS

       ciptool [ options ] < command >

DESCRIPTION

       ciptool is used to set up, maintain, and inspect the CIP configuration of the Bluetooth subsystem in the Linux kernel.

OPTIONS

       -h     Gives a list of possible commands.

       -i <hciX> | <bdaddr>
	      The  command  is	applied to device hciX , which must be the name or the address of an installed Bluetooth device. If not specified,
	      the command will be use the first available Bluetooth device.

COMMANDS

       show   Display information about the connected devices.

       search Search for Bluetooth devices and connect to first one that offers CIP support.

       connect <bdaddr> [psm]
	      Connect the local device to the remote Bluetooth device on the specified PSM number. If no PSM is specified, it will use the SDP	to
	      retrieve it from the remote device.

       release [bdaddr]
	      Release a connection to the specific device. If no address is given and only one device is connected this will be released.

       loopback <bdaddr> [psm]
	      Create a connection to the remote device for Bluetooth testing.  This command will not provide a CAPI controller, because it is only
	      for testing the CAPI Message Transport Protocol.

AUTHOR

       Written by Marcel Holtmann <marcel@holtmann.org>.

								   JUNE 6, 2003 							CIPTOOL(1)
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