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Full Discussion: while loop not working
Top Forums Shell Programming and Scripting while loop not working Post 302476556 by aishsimplesweet on Thursday 2nd of December 2010 03:56:31 AM
Old 12-02-2010
while loop not working
hi everyone

i am facing a very strange problem . please help me why my while loop is not working.

below is my code
Code:
#!/bin/ksh
file=RCMC_ABC_999_080924_210813.DAR
echo ${file}
value=001
count=10
echo "abc"
echo ${count}
value=$((${value} + 1 ))
echo ${value}
while [[ "${count}" -lt 0 ]]
do
  echo "aish"
  count=$((${count} -1 ))
done


and the output of the above is
Code:
./a.sh
RCMC_ABC_999_080924_210813.DAR
abc
10
2

Last edited by Franklin52; 12-02-2010 at 05:13 AM.. Reason: Please use code tags, thank you
 

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LEARN ABOUT LINUX

tping

TPING(1)                                                           LAM COMMANDS                                                           TPING(1)

NAME

       tping - Send echo messages to LAM nodes.

SYNOPSIS

       tping [-hv] [-c count] [-d delay] [-l length] nodes

OPTIONS

       -h            Print the command help menu.

       -v            Turn OFF verbose mode.

       -c count      Send count messages.

       -d delay      Delay delay seconds between each message.

       -l length     Each message is length bytes long.

DESCRIPTION

       The  tping  command  sends  messages  to,  and  collects replies from, a list of nodes, via the LAM echo server.  It is similar to the UNIX
       ping(8) command, and is used as a quick diagnosis of the LAM network.

       Unless options are specified, tping sends a 1 byte message an infinite number of times, displaying the roundtrip time of each message as it
       completes,  with  a delay of 1 second between roundtrips.  After the loop is broken (with keyboard interrupt, eg: ^C), tping prints statis-
       tics about all roundtrip messages.

EXAMPLES

       tping h
           Echo messages to the local node.

       tping -v n7 -l 1000 -c 10
           Echo 1000 byte messages to node 7.  Stay silent while working.  Stop after 10 roundtrips and report statistics.

BUGS

       There is no built-in timeout and tping will wait forever to receive an echo.  If no echo is received, due to a dead  link  or  node,  tping
       hangs.   Stop  the  process  with  a  keyboard suspend signal (eg: ^Z) and terminate LAM with lamhalt(1) or lamwipe(1) (although the use of
       lamwipe(1) is deprecated).

SEE ALSO

       lamhalt(1), lamwipe(1)

LAM 7.1.4                                                           July, 2007                                                            TPING(1)
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