01-27-2015
Hi gmark99...
Quote:
Exit status: It executes an "exit 0" on success or failure, but results are all echoed to a log file. Failures I check are all for functions that read or write data to and from hardware, but I still exit 0, and simply report the results of those functions.
<Cough> It would be wiser to make your
my_job have an error code in real time, detect it in the main script yet still log it as before...
How about commenting out the line, or placing echo in its place, in the script that points to
my_job .
Also try a
sleep <secs> just before your spawned child. In other words deliberately slow things down and see what the results are compared to what you expect them to be.
LBNL, although you are launching your child in the background try strategically placing
wait in the loop and observe what happens or launch it without the
& and let the shell temporarily hang until it is finished...
Just a few ideas to play with.
These 2 Users Gave Thanks to wisecracker For This Post:
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Hello -
I have a bash script which does some logging, and I'd like to include the line number of the echo statement that pipes into $LOGGER:
MYPID=$$
MYNAME=`basename $0`
LOGGER="/usr/bin/logger -t $MYNAME($LINENO) -p daemon.error"
...
echo 'this is an entry into the log file' | $LOGGER
... (3 Replies)
Discussion started by: scandora
3 Replies
2. Shell Programming and Scripting
Hi,
I am having the following problem.
test > hourOfDay=06 ; delayTime=$(((9-$hourOfDay)*60)) ; echo $delayTime
180
test > hourOfDay=07 ; delayTime=$(((9-$hourOfDay)*60)) ; echo $delayTime
120
test > hourOfDay=08 ; delayTime=$(((9-$hourOfDay)*60)) ; echo $delayTime
bash: (9-08: value... (5 Replies)
Discussion started by: jbsimon000
5 Replies
3. Shell Programming and Scripting
Hello,
I'm running a bash script and I'd like to get more accurate a runtime information then now.
So far I've been using this method:
STARTM=`date -u "+%s"`
.........
*script function....
.........
STOPM=`date -u "+%s"`
RUNTIMEM=`expr $STOPM - $STARTM`
if (($RUNTIMEM>59)); then... (6 Replies)
Discussion started by: TehOne
6 Replies
4. Shell Programming and Scripting
Hi All,
There is a script (test.sh) which is taking more CPU usage. I am attaching the script in this thread.
Could anybody please help me out to optimize the script in a better way.
Thanks,
Gobinath (6 Replies)
Discussion started by: ntgobinath
6 Replies
5. Shell Programming and Scripting
I've got a large file (2-4 gigs), made up of 4 columns. I'd like to split the file into two, based on the 2nd column value being even or odd. The following script does the job, but runs incredibly slow--I'm not sure it will complete this week.
There must be a clever way to do this with just... (2 Replies)
Discussion started by: I.P. Freeley
2 Replies
6. Shell Programming and Scripting
Hello,
can someone please help me to fix this script,
I have a 2 files, one file has hostname information and second file has console information of the hosts in each line, I have written a script which actually reads each line in hostname file and should grep in the console file and paste the... (8 Replies)
Discussion started by: bobby320
8 Replies
7. Shell Programming and Scripting
Hi
I need help with my coding , first time I'm working with bash .
What i must do is check if there is 3 .txt files if there is not 3 of them i must give an error code , if al three is there i must first arrange them in alphabetical order and then take the last word in al 3 of the .txt files... (1 Reply)
Discussion started by: linux newb
1 Replies
8. Shell Programming and Scripting
hi all, I am trying to do a loop on a series of plotting function shown below:
colorlist=(blue red green); n=0;
for k in $xy; do
psbasemap $range -JM$scale -B10g5 -X1 -Y1 -P -K > $outfile
pscoast $range -JM$scale -B10g5 -D$res -P -W$lwidth -G$fill -O -K >> $outfile
echo... (1 Reply)
Discussion started by: ida1215
1 Replies
9. Shell Programming and Scripting
I'm running cygwin bash on windows 7 and I'm have some bat files that perform large builds and take a long time and a lot of memory.
Therefor, I don't want to builds executing simultaneously (too much memory).
How can I implement a queue so I can queue up multiple builds and only execute one... (2 Replies)
Discussion started by: siegfried
2 Replies
10. Shell Programming and Scripting
Hi all,
here's my script
#!/bin/ksh
if
then
export DB_CREATE_PATH=`pwd`
fi
echo
echo "********************--Menu--*****************************"
echo "*** "
echo "*** 1. Pre-Upgrade Steps "... (3 Replies)
Discussion started by: jediwannabe
3 Replies
SCRIPT(1) User Commands SCRIPT(1)
NAME
script - make typescript of terminal session
SYNOPSIS
script [options] [file]
DESCRIPTION
script makes a typescript of everything displayed 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 the dialogue in this file. If no filename is given, the dialogue is saved in the file type-
script.
OPTIONS
-a, --append
Append the output to file or to typescript, retaining the prior contents.
-c, --command 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.
-e, --return
Return the exit code of the child process. Uses the same format as bash termination on signal termination exit code is 128+n.
-f, --flush
Flush output after each write. This is nice for telecooperation: one person does `mkfifo foo; script -f foo', and another can
supervise real-time what is being done using `cat foo'.
--force
Allow the default output destination, i.e. the typescript file, to be a hard or symbolic link. The command will follow a symbolic
link.
-q, --quiet
Be quiet (do not write start and done messages to standard output).
-t[file], --timing[=file]
Output timing data to standard error, or to file when given. 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.
-V, --version
Display version information and exit.
-h, --help
Display help text and exit.
NOTES
The script ends when the forked shell exits (a control-D for 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.
It is not recommended to run script in non-interactive shells. The inner shell of script is always interactive, and this could lead to
unexpected results. If you use script in the shell initialization file, you have to avoid entering an infinite loop. You can use for
example the .profile file, which is read by login shells only:
if test -t 0 ; then
script
exit
fi
You should also avoid use of script in command pipes, as script can read more input than you would expect.
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.
script is primarily designed for interactive terminal sessions. When stdin is not a terminal (for example: echo foo | script), then the
session can hang, because the interactive shell within the script session misses EOF and script has no clue when to close the session. See
the NOTES section for more information.
AVAILABILITY
The script command is part of the util-linux package and is available from Linux Kernel Archive <https://www.kernel.org/pub/linux/utils
/util-linux/>.
util-linux June 2014 SCRIPT(1)