02-05-2018
9 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
Hi,
this might be a basic question...
why is that wc -c counts 1 more per line than what is there.
for example,
> cat dum1.txt
123
12
> wc -c dum1.txt
7 dum1.txt
Thanks,
Sameer. (4 Replies)
Discussion started by: ensameer
4 Replies
2. Shell Programming and Scripting
I am no Unix administrator...I live in windows land.
I wrote a script to find files of certain names and process them but was later advised to avoid checking sparse files since it would use up a lot of resources and the files I was looking for were not there.
How do I avoid doing the find on... (3 Replies)
Discussion started by: shellFun
3 Replies
3. Shell Programming and Scripting
I am looking to a solution to the following problem. I have a very large file that looks something like this:
Each group of three numbers on each line are three probabilities that sum to one.
I want to output the maximum for each group of three. So desired output would be:
or... (6 Replies)
Discussion started by: hydrabane
6 Replies
4. Shell Programming and Scripting
I have any XML ouput file(file name TABLE.xml), where the data is loaded in A SINGLE LINE, I need help in writting a ksh shell script which gives me the word counts of word <TABLE-ROW>
This is my input file.
<?xml version="1.0" encoding="UTF-8"?><!--Generated by Ascential Software... (4 Replies)
Discussion started by: pred55
4 Replies
5. UNIX for Dummies Questions & Answers
Hi all,
I want to put a check in my script to check if the same instance is already running and not finished and if not then does not allow it to run! in which part of my script I should put this? and any idea how I should write it? tx (4 Replies)
Discussion started by: messi777
4 Replies
6. Shell Programming and Scripting
Hi,
I have a script which has the below line:
ps -ef | grep ${SCRIPT_NAME} | grep ksh | grep -v grep >> /tmp/instance.tmp
When the script is invoked through CRON, I get 2 lines in instance.tmp when actually only one instance is running:
cdrd 17790 17789 0 15:14:01 ? 0:00 /bin/ksh... (8 Replies)
Discussion started by: cavallino4u
8 Replies
7. UNIX for Dummies Questions & Answers
In bash shell, how we can avoid the commands getting recorded in history file.
One way i can think of is :
export HISTSIZE=0
Is there any other way to achieve this?
Thanks (1 Reply)
Discussion started by: pandeesh
1 Replies
8. Shell Programming and Scripting
under past circumstances, id be fine running commands like this:
case 1:
printf '%s\n' "${MASSIVETEXT}" | egrep "i am on the first line"
case 2:
vprintf '%s\n' "${MASSIVETEXT}" | egrep -v "i am on the first line"
This works fine. Bit it calls external utility "egrep" and "printf". ... (5 Replies)
Discussion started by: SkySmart
5 Replies
9. Shell Programming and Scripting
Hi Gurus,
I need to remove duplicate line in file and update TRAILER (last line) record count. the file is comma delimited, field 2 is key to identify duplicated record.
I can use below command to remove duplicated. but don't know how to replace last line 2nd field to new count.
awk -F","... (11 Replies)
Discussion started by: green_k
11 Replies
LEARN ABOUT LINUX
lamnodes
LAMNODES(1) LAM TOOLS LAMNODES(1)
NAME
lamnodes - Resolve LAM node/CPU notation to Unix hostnames.
SYNOPSIS
lamnodes [-chin] [where]
OPTIONS
-c Suppress printing the CPU count for each node.
-h Print the command help menu.
-i Print IP addresses (instead of IP names)
-n Suppress printing CPU count for each node
DESCRIPTION
The lamnodes command is used to resolve LAM node/CPU nomenclature to Unix hostnames. It can be used to determine the current running con-
figuration of the LAM/MPI run-time environment, and generate a boot schema that can be used to launch LAM in the future.
By default, lamnodes will print out the node number, default IP name, CPU count, and per-node flags for each node in the running LAM.
gethostbyaddr(3) is used to obtain default hostnames. If gethostbyaddr(3) fails, the IP number is displayed instead.
This command can be used by setup shell scripts (and the like) to determine information from a currently-running LAM universe. For exam-
ple, use lamnodes to resolve particular CPUs and/or nodes to specific unix hostnames. In a batch environment, lamnodes can be used to
determine which CPUs share a common node (note that MPI_GET_PROCESSOR_NAME can be used for a similar effect in an MPI program).
lamnodes also shows per-node flags. Currently defined flags are:
origin The node where lamboot was executed.
this_node The node where lamnodes is running.
no_schedule The node will not be used to run MPI and serial processes when N and C are used to mpirun and lamexec.
EXAMPLES
lamnodes N -n
Display IP names and CPU counts for all nodes. This output can be saved and later used with lamboot(1).
lamnodes C -n -c
Display the IP name of the nodes containing each CPU, and suppress the LAM node number and CPU count. This output can be saved and
later used with lamboot(1).
SEE ALSO
bhost(5), gethostbyaddr(3), lamboot(1)
LAM 7.1.4 July, 2007 LAMNODES(1)