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Full Discussion: For loop in bash shell
Top Forums UNIX for Dummies Questions & Answers For loop in bash shell Post 302804433 by Don Cragun on Wednesday 8th of May 2013 02:48:19 PM
Old 05-08-2013
Adding quotes won't make any difference for this code snippet. There is no way that data_$i.txt will ever expand to data.txt, although it might appear that way if $i contained a backspace character. (But, of course i won't contain a backspace in the loop you listed.)

Please show us the rest of the script or at least add set -xv to the start of your script to figure out what command in your script is actually failing.
 

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ifplugd.conf(5) 						File Formats Manual						   ifplugd.conf(5)

NAME
ifplugd.conf - ifplugd configuration file SYNOPSIS
/etc/default/ifplugd DESCRIPTION
ifplugd.conf is the configuration file for ifplugd. It is a shell script that is sourced by the init script starting the daemon. It shall be used to set environment variables which are interpreted by the init script: OPTIONS
INTERFACES Specifies the ethernet interfaces to monitor. It has to contain a space seperated list of network interfaces names. Most users will probably use "eth0" here, however you may add additional interfaces for monitoring more than one device. A special value is sup- ported as well: "auto" will enable a more or less working auto detection of available network devices. This won't make you happy when using network module auto loading, since it cannot detect currently unloaded network devices. HOTPLUG_INTERFACES Specifies the interfaces that can be hotplugged (like interfaces on PCMCIA, USB or WLAN adapters). "all" can be used to make the udev script start an ifplugd process for any hotplugged interfaces (except those already listed in INTERFACES). ARGS Additional command line arguments for ifplugd invocation. See ifplugd(8) for further information. ARGS_iface If specified for an interface this variable takes precedence over ARGS. This may be useful if more than one network device is present. SEE ALSO
ifplugd(8) COMMENTS
This man page was written using xmltoman(1) by Oliver Kurth. Manuals User ifplugd.conf(5)
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