Hi all,
I'm anew shell user, and want to now how to do that?
i have a files that have inside few raws of names of directories, i want to read only the lins that are a dir name how to do so.
the file looks like that
####################################
# This is the list of dirs files ... (4 Replies)
Hi
I have the following script :
#!/bin/ksh
#################### Function macAddressFinder ########################
macAddressFinder()
{
`ifconfig -a > ipInterfaces`
`cat ipInterfaces`
}
#######################################################################
#
#
print... (2 Replies)
Hopefully someone here can point me in the correct direction.
I'm working on a username migration and am trying to map my users ols usernames to the new ones.
Right now every user has a username of firstname.lastname i.e. john.doe
I'm trying to create a bash or python script that will take... (3 Replies)
I am looking for suggestions on how I could possibly optimized that piece of code where most of the time is spend on this script. In a nutshell this is a script that creates an xml file(s) based on certain criteria that will be used by a movie jukebox.
Example of data:
$SORTEDTMP= it is a... (16 Replies)
Hi,
Linux newbie here with what I'm guessing is silly questions.
My script below is working in that it correctly copies files from the backup IP (10.0.91.1) back down to the Linux server but trouble is it loops continuously.
It correctly downloads 100 files from the the IP 10.0.91.1... (1 Reply)
Hi All,
I have a script that I wrote on a bash shell, I use it to sort files from a directory into various other directories. I have an variable set, which is an array of strings, I then check each file against the array and if it is in there the script sorts it into the correct folder.
But... (5 Replies)
salary_range_report()
{
echo -e ${underline}$redYellow"\nSalary Range Report\n"
tput sgr0
count_0_to_999=0
count_1000_to_2999=0
count_2000_to_5999=0
count_6000_to_9999=0
count_10000_above=0
for i in `cut -d "," -f4 $PAYROLL` #Loop Salary
do
if &&
then
let... (4 Replies)
Hi All,
i worte a shell script which will zcat the .gz file and write it in to a tmp file and then again cat the file and convert it to Dos mode. Next step is i am greping the file to search for the particular string on the 1st line and if the string does not exits it will insert the 1st line... (1 Reply)
Good morning,
At the client location
os is CentOS. In all the terminals i.e F1, F2, F3....F10 PING command is continuously running. I tried to terminate it using CTRL C or quit but unable to stop that command in all the terminals. How to stop that? Howto find batch files which are being... (3 Replies)
Discussion started by: sureshbabu.anis
3 Replies
LEARN ABOUT CENTOS
batch
AT(1) General Commands Manual AT(1)NAME
at, batch, atq, atrm - queue, examine or delete jobs for later execution
SYNOPSIS
at [-V] [-q queue] [-f file] [-mMlv] timespec...
at [-V] [-q queue] [-f file] [-mMkv] [-t time]
at -c job [job...]
atq [-V] [-q queue]
at [-rd] job [job...]
atrm [-V] job [job...]
batch
at -b
DESCRIPTION
at and batch read commands from standard input or a specified file which are to be executed at a later time, using /bin/sh.
at executes commands at a specified time.
atq lists the user's pending jobs, unless the user is the superuser; in that case, everybody's jobs are listed. The format of the out-
put lines (one for each job) is: Job number, date, hour, queue, and username.
atrm deletes jobs, identified by their job number.
batch executes commands when system load levels permit; in other words, when the load average drops below 0.8, or the value specified in
the invocation of atd.
At allows fairly complex time specifications, extending the POSIX.2 standard. It accepts times of the form HH:MM to run a job at a spe-
cific time of day. (If that time is already past, the next day is assumed.) You may also specify midnight, noon, or teatime (4pm) and you
can have a time-of-day suffixed with AM or PM for running in the morning or the evening. You can also say what day the job will be run, by
giving a date in the form month-name day with an optional year, or giving a date of the form MMDD[CC]YY, MM/DD/[CC]YY, DD.MM.[CC]YY or
[CC]YY-MM-DD. The specification of a date must follow the specification of the time of day. You can also give times like now + count
time-units, where the time-units can be minutes, hours, days, or weeks and you can tell at to run the job today by suffixing the time with
today and to run the job tomorrow by suffixing the time with tomorrow.
For example, to run a job at 4pm three days from now, you would do at 4pm + 3 days, to run a job at 10:00am on July 31, you would do at
10am Jul 31 and to run a job at 1am tomorrow, you would do at 1am tomorrow.
The definition of the time specification can be found in /usr/share/doc/at-3.1.13/timespec.
For both at and batch, commands are read from standard input or the file specified with the -f option and executed. The working directory,
the environment (except for the variables BASH_VERSINFO, DISPLAY, EUID, GROUPS, SHELLOPTS, TERM, UID, and _) and the umask are retained
from the time of invocation.
As at is currently implemented as a setuid program, other environment variables (e.g. LD_LIBRARY_PATH or LD_PRELOAD) are also not
exported. This may change in the future. As a workaround, set these variables explicitly in your job.
An at - or batch - command invoked from a su(1) shell will retain the current userid. The user will be mailed standard error and standard
output from his commands, if any. Mail will be sent using the command /usr/sbin/sendmail. If at is executed from a su(1) shell, the owner
of the login shell will receive the mail.
The superuser may use these commands in any case. For other users, permission to use at is determined by the files /etc/at.allow and
/etc/at.deny. See at.allow(5) for details.
OPTIONS -V prints the version number to standard error and exit successfully.
-q queue
uses the specified queue. A queue designation consists of a single letter; valid queue designations range from a to z and A to Z.
The a queue is the default for at and the b queue for batch. Queues with higher letters run with increased niceness. The special
queue "=" is reserved for jobs which are currently running.
If a job is submitted to a queue designated with an uppercase letter, the job is treated as if it were submitted to batch at the
time of the job. Once the time is reached, the batch processing rules with respect to load average apply. If atq is given a spe-
cific queue, it will only show jobs pending in that queue.
-m Send mail to the user when the job has completed even if there was no output.
-M Never send mail to the user.
-f file Reads the job from file rather than standard input.
-t time run the job at time, given in the format [[CC]YY]MMDDhhmm[.ss]
-l Is an alias for atq.
-r Is an alias for atrm.
-d Is an alias for atrm.
-b is an alias for batch.
-v Shows the time the job will be executed before reading the job.
Times displayed will be in the format "Thu Feb 20 14:50:00 1997".
-c cats the jobs listed on the command line to standard output.
FILES
/var/spool/at
/var/spool/at/spool
/proc/loadavg
/var/run/utmp
/etc/at.allow
/etc/at.deny
SEE ALSO at.allow(5), at.deny(5), atd(8), cron(1), nice(1), sh(1), umask(2).
BUGS
The correct operation of batch for Linux depends on the presence of a proc- type directory mounted on /proc.
If the file /var/run/utmp is not available or corrupted, or if the user is not logged on at the time at is invoked, the mail is sent to the
userid found in the environment variable LOGNAME. If that is undefined or empty, the current userid is assumed.
At and batch as presently implemented are not suitable when users are competing for resources. If this is the case for your site, you
might want to consider another batch system, such as nqs.
AUTHOR
At was mostly written by Thomas Koenig, ig25@rz.uni-karlsruhe.de.
2009-11-14 AT(1)