As per the explanation and the command you execute nothing harm should happen. But really, I cannot understand exactly what you are meaning.
But i just tried what ever you explained, and got the following script.
Code:
while [ true ]
do
echo $ttt
sleep 5
done
Executed the above in the background, and tried doing what ever you said, but nothing affected. It always printed the ttt value, as it should. Because i exported it, and then invoked the script so it will get that value. After invoking if i change the value of that variable in the parent shell it wont affect.
Hope this helped, else come up with more clearer data.
Error 124 occured...
Hey everyone,i use DigitalUnix 4.0...does anyone know what kind of error is that???
Let me tell u the whole story...once upon a time(yesterday) i tried to install gearsoftware for a Plextor CD writer...i'm new in Unix and it took me a while but i made it...
Before i... (1 Reply)
Hi all,
By running a (command) script I'm getting the following
error: .: /usr/bin/test: cannot execute binary file
This is the command:
$ . test
The script (test) is very simple
sqlplus user/password @1.sql
sqlplus user/password @2.sql
Can enyone tell me what the problem is. (5 Replies)
When I run this, I am getting the below error. Why? Pls help me
#!/bin/ksh
echo Hello World
dirs="not_using_0"
for entry in *; do
&& dirs="$dirs $entry"
done
dirarray=($dirs)
index=1
while }" ] ; do
echo "${index}: ${dirarray}"
index=`expr $index + 1`
done
while ; do
echo -n... (1 Reply)
Hi all,
I have created a script file .sh and had some allias commands, local variable, some grep features, and listing files/directories, and it worked correctly and I got the outputs I am looking for after I run the script . However, some of the grep commands and some other functions did not... (2 Replies)
Hi All,
Need your guuys help here.
#!/bin/bash
{
echo "POLICY LIST"
echo "===================================="
bppllist
echo " "
echo "POLICY DETAILS"
echo "===================================="
for type in daily weekly monthly quarterly
echo... (6 Replies)
Hi,
I was trying to use nawk script given in this link
https://www.unix.com/aix/19979-df-output-not-aligned.html
but when i do this im getting this error
$ df -k|formatDF.nawk
-ksh: formatDF.nawk: not found
Can anyone help me on this... (6 Replies)
i used a two-way linked list "node" for the code::
#include<stdio.h>
#include<malloc.h>
void insert();
void reverse();
struct node
{
char c;
struct node *next;
struct node *back;
}*start=NULL;
int main()
{
int n,i; (4 Replies)
Dear Friends,
I am sorting the file which contain 55Lakhs of records while Sorting i am facing issues
Sort :0653-657 Write Error occured while merging
Could you please any one tell me how to overcome this problem
Thanks in advance (5 Replies)
Hi All
I have written below basic restart script but it is giving me the following error -
error - syntax error at line 40 : `else' is not matched .
below is the script can someone assist me what i am doing wrong -
#!/bin/ksh
cd bin
. ./set_sysm
sleep 60
./swstop -f 0
... (1 Reply)
Hi,
I have the the below script
more runcda.sh
if *\).*/\1/p' $1_dr) ]; then
echo "ParallelGCThreads Found with Value"
else
echo "ParallelGCThreads Not Found - Add !!"
fi
$ ./runcda.sh output.log
./runcda.sh: test: argument expected
ParallelGCThreads Not Found - Add !!
Why am i... (2 Replies)
Discussion started by: mohtashims
2 Replies
LEARN ABOUT FREEBSD
sleep
SLEEP(1) BSD General Commands Manual SLEEP(1)NAME
sleep -- suspend execution for an interval of time
SYNOPSIS
sleep seconds
DESCRIPTION
The sleep command suspends execution for a minimum of seconds.
If the sleep command receives a signal, it takes the standard action. When the SIGINFO signal is received, the estimate of the amount of
seconds left to sleep is printed on the standard output.
IMPLEMENTATION NOTES
The SIGALRM signal is not handled specially by this implementation.
The sleep command allows and honors a non-integer number of seconds to sleep in any form acceptable by strtod(3). This is a non-portable
extension, and its use will nearly guarantee that a shell script will not execute properly on another system.
EXIT STATUS
The sleep utility exits 0 on success, and >0 if an error occurs.
EXAMPLES
To schedule the execution of a command for x number seconds later (with csh(1)):
(sleep 1800; sh command_file >& errors)&
This incantation would wait a half hour before running the script command_file. (See the at(1) utility.)
To reiteratively run a command (with the csh(1)):
while (1)
if (! -r zzz.rawdata) then
sleep 300
else
foreach i (`ls *.rawdata`)
sleep 70
awk -f collapse_data $i >> results
end
break
endif
end
The scenario for a script such as this might be: a program currently running is taking longer than expected to process a series of files, and
it would be nice to have another program start processing the files created by the first program as soon as it is finished (when zzz.rawdata
is created). The script checks every five minutes for the file zzz.rawdata, when the file is found, then another portion processing is done
courteously by sleeping for 70 seconds in between each awk job.
SEE ALSO nanosleep(2), sleep(3)STANDARDS
The sleep command is expected to be IEEE Std 1003.2 (``POSIX.2'') compatible.
HISTORY
A sleep command appeared in Version 4 AT&T UNIX.
BSD April 18, 1994 BSD