Sponsored Content
Top Forums Shell Programming and Scripting Script to wait until file is updated Post 302424787 by sameucho on Wednesday 26th of May 2010 09:54:52 AM
Old 05-26-2010
Script to wait until file is updated

Hello,

I need to evaluate (under BASH) if the certain file has been updated or not. If the file still wasn't updated, script should wait. The script picks up the time stamp of the file using command
Code:
OldTimestamp=$(date -r $MyDir/$MyFile)

, but I don't know how to code a waiting loop with new and old time stamps comparision (leaving condition is the timestamps are different).

Would anybody help?
Thanks.

Last edited by sameucho; 05-26-2010 at 11:00 AM..
 

9 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

make my script wait

is there a way to make my script wait before doing something without using the "sleep _" command? (4 Replies)
Discussion started by: Blip
4 Replies

2. Shell Programming and Scripting

Need to execute 2 scripts, wait, execute 2 more wait, till end of file

:cool: I need to execute a shell script to do the following: cat a file run two back ground processes using the first two values from the file wait till those background processes finish run two more background processes using the next two values from the file wait till those background... (1 Reply)
Discussion started by: halo98
1 Replies

3. Shell Programming and Scripting

wait command - cat it wait for not-chile process?

Did not use 'wait' yet. How I understand by now the wait works only for child processes, started background. Is there any other way to watch completion of any, not related process (at least, a process, owned by the same user?) I need to start a background process, witch will be waiting... (2 Replies)
Discussion started by: alex_5161
2 Replies

4. Shell Programming and Scripting

To force a script to wait for another.

Hi All! Here is the problem, I'm trying to develop a script that can help me with the raid creation, but, till now, I have been dealing for more than a week and I still didn't achieve any satisfactory results. :confused: Here is the code to execute: # mdadm --manage /dev/md0 --add... (4 Replies)
Discussion started by: Ne7o7
4 Replies

5. AIX

Aix script to monitor when a file has been updated

Hi Im looking to create a Aix script to monitor a file for once it's been updated and then send an email. I dont have great scripting knowledge and have only come up with the following so far while true do find /home/test/AMQ* -mmin 1 > /home/test/scripts/output/MQERRORS exec... (2 Replies)
Discussion started by: elmesy
2 Replies

6. Shell Programming and Scripting

Wait function in a script

Hi everyone, I need some help to create a script. This script have to create a file once all the process inside are finish. Here how I want to do : #!/bin/ksh /home/oracle/save1.ksh & proc_id1=$! /home/oracle/save2.ksh & proc_id2=$! /home/oracle/save3.ksh & proc_id3=$! ... (4 Replies)
Discussion started by: remfleyf
4 Replies

7. Shell Programming and Scripting

Script to send email if new file is added when folder is updated

Hi, I have a script which updates a repository which is run manually. When this happens either no or new files will be added to a specific folder. If there are new files that have been added, an email needs to be sent. How can i check a folder for any new files after the update repos script has... (0 Replies)
Discussion started by: acc01
0 Replies

8. Shell Programming and Scripting

calling a shell script in background and wait using "wait" in while loop

Hi, I am facing a strange issue, when i call a script from my while loop in background it doesnt go in background, despite the wait i put below the whil loop it goes forward even before the process put in background is completed. cat abc.txt | while read -u4 line do #if line contains #... (2 Replies)
Discussion started by: mihirvora16
2 Replies

9. Shell Programming and Scripting

Script using Wait

Hi, written a script which uses wait as follows Main.sh #!/usr/bin/ksh nohup scrpit1 1 & pid_1=$! nohup scrpit1 2 & pid_2=$! wait $pid_1 wait $pid_2 nohup scrpit1 3 & pid_1=$! nohup scrpit1 4 & (1 Reply)
Discussion started by: krux_rap
1 Replies
SCRIPT(1)						    BSD General Commands Manual 						 SCRIPT(1)

NAME
script -- make typescript of terminal session SYNOPSIS
script [-a] [-c COMMAND] [-f] [-q] [-t] [file] DESCRIPTION
Script makes a typescript of everything printed on your terminal. It is useful for students who need a hardcopy record of an interactive session as proof of an assignment, as the typescript file can be printed out later with lpr(1). If the argument file is given, script saves all dialogue in file. If no file name is given, the typescript is saved in the file typescript. Options: -a Append the output to file or typescript, retaining the prior contents. -c COMMAND Run the COMMAND rather than an interactive shell. This makes it easy for a script to capture the output of a program that behaves differently when its stdout is not a tty. -f Flush output after each write. This is nice for telecooperation: One person does `mkfifo foo; script -f foo' and another can super- vise real-time what is being done using `cat foo'. -q Be quiet. -t Output timing data to standard error. This data contains two fields, separated by a space. The first field indicates how much time elapsed since the previous output. The second field indicates how many characters were output this time. This information can be used to replay typescripts with realistic typing and output delays. The script ends when the forked shell exits (a control-D to exit the Bourne shell (sh(1)), and exit, logout or control-d (if ignoreeof is not set) for the C-shell, csh(1)). Certain interactive commands, such as vi(1), create garbage in the typescript file. Script works best with commands that do not manipulate the screen, the results are meant to emulate a hardcopy terminal. ENVIRONMENT
The following environment variable is utilized by script: SHELL If the variable SHELL exists, the shell forked by script will be that shell. If SHELL is not set, the Bourne shell is assumed. (Most shells set this variable automatically). SEE ALSO
csh(1) (for the history mechanism), scriptreplay(1). HISTORY
The script command appeared in 3.0BSD. BUGS
Script places everything in the log file, including linefeeds and backspaces. This is not what the naive user expects. AVAILABILITY
The script command is part of the util-linux-ng package and is available from ftp://ftp.kernel.org/pub/linux/utils/util-linux-ng/. Linux July 30, 2000 Linux
All times are GMT -4. The time now is 10:54 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy