No need for that long contruct; given you are using bash, try this to ls all files in /var/log NOT open by the command "sleep":
Code:
ls -d /var/log/!($(lsof -Fn -c sleep 2>/dev/null|awk -F"[/]" '/\/var\/log/{printf "%s|",$4}'))
What it does: lsof outputs the open files for command sleep, including path, which is removed by awk, adding the "|" separator. This then goes into the bash extglob operator !(...) to be used by ls.
When I boot FreeBSD from cd/floppy, it skips the UserConfig program. I have no idea why! And if I skip this step, my hardware won't work. ( I already tried...) Can anyone help me with this??? (2 Replies)
Hi,
how can I skip the new line of echo? In SH!!!!
echo "the date is :"
date
and result I want is
the date is : Tue Oct 11 22:24:37 WEST 2005
I've already tried including the \c inside the echo, but it didn't work.
Thanks! (2 Replies)
hi
the step 'upgrading the rpm' is taking a long tme. and since I am not interested in uninstallation, is there a way to skip this step?
thx (4 Replies)
Hello,
I am trying to write a bash shell script that does the following:
1.Finds all *.txt files within my directory of interest
2. reads each of the files (25 files) one by one (tab-delimited format and have the same data format)
3. skips the first 10 rows of the file
4. extracts and... (4 Replies)
Hi all
I have some script like this
#!/bin/bash
mv /tmp/file1 tmp/file2
if ] ; then
cp /tmp/filetest/ tmp/file3
if ] then
echo "succes"
else
echo "failed"
fi
else
echo "failed"
fi
i didn't try to see if it's work, the thing is that i don't care if... (4 Replies)
Hi,
I would like to read an input from keyboard using getchar. However, if no input (No Carriage return/new line none whatsoever) is given after say, 5 seconds, I would like to skip the getchar and move on. How do I do this in C. I'm using GNU compiler set.
Thanks, (5 Replies)
Hi,
I have an awk code that reads an input file, checks the 4th column and tells if its fine.
#!/bin/ksh
{ if ($4 == 0)
print "fine"
else
print "some problem" }' FILENAME
My problem is that, I dont want to check the first 3 and last 3 lines.
This can be hard coded by using BEGIN and END... (9 Replies)
Hi,
I want to copy data from one directory to another in csh script. But in that i want to skip certain types of file. How can i do that.
Currently i am copying all the files as mentioned below..
foreach d ( $TEST_PATH/*)
cp -R $d $PWD
end
now i want to skip files... (3 Replies)
Platform: Oracle Enterprise Linux 6.2
I have several files like below. I want to remove all files except one file
For example , I want to remove all the files below except dasd_91197.trc
$ ls -alrt *.trc
-rw-r----- 1 ecmdev wms 8438784 May 7 21:30 dasd_91177.trc
-rw-r----- 1 ecmdev wms ... (3 Replies)
Discussion started by: John K
3 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