hi, I have a list of filenames and I want to verify if they all exist. I know "if filename" would do the trick but how do I go about a list of files? thanks (3 Replies)
Hi,
- The first question I have concerns a very fundamental aspect of a unix OS. Specifically, does unix treat everything as a file (ie a directory is just a type of file)?
- The reason I ask is that I am trying to determine which BASH unary operator I would to use to determine whether or not... (1 Reply)
Hi Forum.
I need a script to wait for all multiple trigger files to be present or else go to sleep for 10 seconds (Number of trigger files can vary). I tried to search on the forum but was not able to find a solution.
I found this code on this forum but it's not working as expected:
for... (6 Replies)
Hello,
Can you please help me to see if log files exist in a directory?
I need to scan logs in different directories, so I am using an array to change dynamically.
I need help in the if test statement
dir=/logs/MSD
dir=/logs/UPD
countA=1
while (( countA <= ${#dir
} ))
do
cd ${dir}... (1 Reply)
Hi,
I am checking for existence of files with the same extensions
#! /usr/bin/ksh
txtfiles = '*.txt'
if
then
cp ${dirpath}/${txtfiles} ${dir2path}
fi
I am getting the following error
line 5: [: too many arguments for the if check condition (4 Replies)
Hi I am having a problem to verify existence of files. I need to know whether or not files in a folder that begins with a name.
For example all files that start with The_File_ *.
I was doing it this way, but gives me error.
if text -f /work/The_File_*
then
...
else
..
fi (5 Replies)
Hi
I have a requirement to check whether the files exists, then it will call other steps in shell script.
I did
ls *.csv|wc -l
if
then checking the count of the files should be more than 1 then it will call other steps.
I am getting the error that too many arguements as there n... (13 Replies)
Discussion started by: cnrj
13 Replies
LEARN ABOUT OSX
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.
IMPLEMENTATION NOTES
The SIGALRM signal is not handled specially by this implementation.
The sleep command will accept and honor a non-integer number of specified seconds (with a '.' character as a decimal point). 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