10-08-2008
Expect Script - While file exist
Hi:
Can anyone help me with the while loop in expect script. Following is my scenario:
1. one of my process is running and looking for a file
2. as soon as the file is dropped the proces then processes the file and creates a control file ".ctl" to indicate end of process for that file
3. after the above process, I need to rename the ".ctl" file to ".done" as part of the second processing
How do I write an expect script to check if the file exists in the directory and then only rename the file from ".ctl" to ".done" extension. I can work with the if condition, but my expect script is the one that drops the file and will have to wait till the ".ctl" file is created by the process and then my expect script will rename the .ctl file to .done
set filename "abc"
expect ">$ "
while { [file exists $flname.ctl] }\
{
expect ">$ "
puts "$flname.ctl exists\r"
expect ">$ "
send "mv $flname.ctl $flname.done\r"
}
For some reason the above code doesnt do anything. I am not sure if it's the syntax or something that I am overlooking. Or is it plain that I cant use "file exists" command in a while loop.
Please advice
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LEARN ABOUT CENTOS
ras-mc-ctl
RAS-MC-CTL(8) RAS memory controller admin utility RAS-MC-CTL(8)
NAME
ras-mc-ctl - RAS memory controller admin utility
SYNOPSIS
ras-mc-ctl [OPTION]...
DESCRIPTION
The ras-mc-ctl program is a perl(1) script which performs some useful RAS administration tasks on EDAC (Error Detection and Correction)
drivers.
OPTIONS
--help Display a brief usage message.
--mainboard
Print mainboard vendor and model for this hardware, if available. The method used by ras-mc-ctl to obtain the mainboard vendor and
model information for the current system is described below in the MAINBOARD CONFIGURATION section.
--status
Print the status of EDAC drivers (loaded or unloaded).
--quiet
Be less verbose when executing an operation.
--register-labels
Register motherboard DIMM labels into EDAC driver sysfs files. This option uses the detected mainboard manufacturer and model num-
ber in combination with a "labels database" found in any of the files under /etc/ras/dimm_labels.d/* or in the labels.db file at
/etc/ras/dimm_labels.db. An entry for the current hardware must exist in the labels database for this option to do anything.
--print-labels
Display the configured labels for the current hardware, as well as the current labels registered with EDAC.
--guess-labels
Print DMI labels, when bank locator is available at the DMI table. It helps to fill the labels database at /etc/ras/dimm_labels.d/.
--labeldb=DB
Specify an alternate location for the labels database.
--delay=time
Specify a delay of ime seconds before registering dimm labels. Only meaninful if used together with --register-labels.
--layout
Prints the memory layout as detected by the EDAC driver. Useful to check if the EDAC driver is properly detecting the memory con-
troller architecture.
MAINBOARD CONFIGURATION
The ras-mc-ctl script uses the following method to determine the current system's mainboard vendor and model information:
1. If the config file /etc/edac/mainboard exists, then it is parsed by ras-mc-ctl. The mainboard config file has the following simple syn-
tax:
vendor = <mainboard vendor string>
model = <mainboard model string>
script = <script to gather mainboard information>
Where anything after a '#' character on a line is considered a comment. If the keyword script is specified, then that script or exe-
cutable is run by ras-mc-ctl to gather the mainboard vendor and model information. The script should write the resulting information on
stdout in the same format as the mainboard config file.
2. If no mainboard config file exists, then ras-mc-ctl will attempt to read DMI information from the sysfs files
/sys/class/dmi/id/board_vendor
/sys/class/dmi/id/board_name
3. If the sysfs files above do not exist, then ras-mc-ctl will fall back to parsing output of the dmidecode(8) utility. Use of this util-
ity will most often require that ras-mc-ctl be run as root.
SEE ALSO
fBrasdaemon(1)
RAS-MC-CTL(8)