Shell Programming and Scripting

#!/bin/bash

for NODE in 1 2 3
do
        /sw/egs/bin/dsh -w node0${NODE} -e "/home/ts/scripts/copy.sh"

done

#/bin/bash

IDIR="/home/ts/test2/temp"
ODIR="/home/ts/test3/
FARRAY=( "$IDIR"/*.R )
COUNT=${#FARRAY[@]}

THIS_NODE=
TOTAL_NODES=3


for i in `seq 1 $COUNT`
do

        THIS_FILE=${FARRAY[$i]}
        REM=`expr $i % $TOTAL_NODES`


        if [ $REM -eq 0 ]
        then
        $REM = $TOTAL_NODES
        fi
    

        if [ $REM -eq $THIS_NODE ]
        then 
                cp $THIS_FILE $ODIR
        fi

done

ARR=( whatever ) ; for i in `seq ...`

for FILE in whatever/*
do
        ...
done

#!/bin/bash

NODES=3
N=0

# If there are thousands of files, '*.R' will fail in the shell with 'too many arguments'.
# So we use find instead, which prints to a pipe, avoiding using
# arguments at all.
find /home/ts/test2/temp/ -mindepth 1 -maxdepth 1 -type f -name '*.R' | while read FILE
do
        echo "file $FILE goes to node $N"
        echo "$FILE" >> /tmp/$$-$N
        let N=(N+1)%3
done

for ((N=0; N<NODES; N++))
do
        # I am assuming dsh can read from standard input here.
        # If this is wrong, that wont' work :(
        /sw/egs/bin/dsh -w node0${N} -e "/home/ts/scripts/copy.sh" < /tmp/$$-$N &
        rm /tmp/$$-$N
done

wait

#!/bin/bash

ODIR="/home/ts/test3/

while read FILE
do
        echo "Got file $FILE"
        echo cp "$FILE" "$ODIR"
done