Dear All,
i have a awk script where i'm using while loop inside while loop
here is the code:
awk -v DATE="$CURRDATE" -v -F'@' 'BEGIN {
while(( getline < "Merge_Calldet.txt" ))
{
ARR=$5
LINE=$0
while(( getline < "Merge_Accessnum.txt" ))
{
TESTSIMENTRY=$1
FILEDATE=$15 ... (0 Replies)
I'm trying to understand if it's possible to create a set of variables that are numbered based on another variable (using eval) in a loop, and then call on it before the loop ends.
As an example I've written a script called question (The fist command is to show what is the contents of the... (2 Replies)
Is it possible to have a for loop nested inside another for loop? I am trying to run a script against specific files inside a child directory but I can't seem to find a solution that is clean and affect to do it. Here is what I am trying do. I have 2 gzip files in each of the Target Directories... (4 Replies)
I am new to unix and trying to make a script for writing all my command into another file and use that file to run all commands
I am trying to use for loop with echo command to generate a command based script for writing the file with all the command sequentially w.r.t for loop.
I want... (6 Replies)
Hi, I am a newbie and would like to create a shell script that will move one file at a time from one path to another path in the same server. However, the next file should wait until the first file gets deleted by an application.
I tried creating the script but right after the first file has... (1 Reply)
Hi All,
Below is the very simple code snippet but it si giving me syntax error
#!/bin/bash
#To ensure If JMS directory exists or not
ServerName=$(hostname)
#To ensure If JMS directory exists or not
echo $ServerName
if ;
then
echo "Inside First If"
if ;
then
echo 'JMS... (4 Replies)
Hi Folks,
I have a loop that goes through an array and the output is funky.
sample:
array=( 19.239.211.30 )
for i in "${array}"
do
echo $i
iperf -c $i -P 10 -x CSV -f b -t 50 | awk 'END{print '$i',$6}' >> $file
done
Output:
19.239.211.30
19.2390.2110.3 8746886
seems that when... (2 Replies)
Hi, I have written a script that allows me to repetitively play a music file $N times, which is specified through user input. However, if I want to exit the script before it has finished looping $N times, if I use CTRL+c, I have to CTRL+c however many times are left in order to complete the loop.... (9 Replies)
I'm taking a unix class and need to countdown to 0 from whatever number the user inputs. I know how to do this with a while or until loop but using the for loop is throwing me off....
I know I can use an if-then statement in my for loop but can I include a while loop in my for loop? (3 Replies)
Hi there guys!
I was trying to do:
while read line; do
if ; then
read -p "Press Enter to continue..."
cont=0
fi
echo $line
let cont++
done < file.txt
However, I have read that the read -p would not work in a while loop...
I was wondering if there is any other way to... (2 Replies)
Discussion started by: rplae
2 Replies
LEARN ABOUT DEBIAN
sg_sync
SG_SYNC(8) SG3_UTILS SG_SYNC(8)NAME
sg_sync - send the scsi command synchronize cache
SYNOPSIS
sg_sync [--count=COUNT] [--group=GROUP] [--help] [--immed] [--lba=LBA] [--sync-nv] [--verbose] [--version] DEVICE
DESCRIPTION
Send SYNCHRONIZE CACHE (10) command to DEVICE. This command is defined for SCSI block devices (see SBC-2). If successful this command makes
sure that any blocks whose latest versions are held in (volatile) cache are written to (also termed as "synchronized with") the medium. If
the --sync-nv option is given and the device has a non-volatile cache then any blocks whose latest versions are held in volatile cache are
written to non-volatile cache.
If the LBA and COUNT arguments are both zero (their defaults) then all blocks in the cache are synchronized. If LBA is greater than zero
while COUNT is zero then blocks in the cache whose addresses are from and including LBA to the highest lba on the device are synchronized.
If both LBA and COUNT are non zero then blocks in the cache whose addresses lie in the range LBA to LBA+COUNT-1 inclusive are synchronized
with the medium.
OPTIONS
Arguments to long options are mandatory for short options as well.
-c, --count=COUNT
where COUNT is the number of blocks to synchronize from and including LBA. Default value is 0. When 0 then all blocks in the
(volatile) cache from and including LBA argument to the highest block address are synchronized.
-g, --group=GROUP
where GROUP is the group number which can be between 0 and 31 inclusive. The default value is 0 . Group numbers are used to segre-
gate data collected within the device. This is a new feature in SBC-2 and can probably be ignored for the time being.
-h, --help
output the usage message then exit.
-i, --immed
sets the IMMED bit in the SYNCHRONIZE CACHE command. This instructs the device, if the format of the command is acceptable, to
return a GOOD status immediately rather than wait for the blocks in the (volatile) cache to be synchronized with (i.e. written to)
the medium (or the non-volatile cache).
-l, --lba=LBA
where LBA is the lowest logical block address in the (volatile) cache to synchronize to the medium (or the non-volatile cache).
Default value is 0 .
-s, --sync-nv
synchronize the (volatile) cache with the non-volatile cache. Without this option (or if there is no non-volatile cache in the
device) the synchronization is with the medium.
-v, --verbose
increase the level of verbosity, (i.e. debug output).
-V, --version
print the version string and then exit.
NOTES
Various numeric arguments (e.g. LBA) may include multiplicative suffixes or be given in hexadecimal. See the "NUMERIC ARGUMENTS" section in
the sg3_utils(8) man page.
EXIT STATUS
The exit status of sg_sync is 0 when it is successful. Otherwise see the sg3_utils(8) man page.
AUTHORS
Written by Douglas Gilbert.
REPORTING BUGS
Report bugs to <dgilbert at interlog dot com>.
COPYRIGHT
Copyright (C) 2004-2009 Douglas Gilbert
This software is distributed under a FreeBSD license. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PUR-
POSE.
SEE ALSO
sg_start(sg3_utils)
sg3_utils-1.27 March 2009 SG_SYNC(8)