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Full Discussion: Script in bash that works only some of the time
Top Forums Shell Programming and Scripting Script in bash that works only some of the time Post 302960918 by twinion on Sunday 22nd of November 2015 02:10:56 AM
Old 11-22-2015
Quote:
Originally Posted by balajesuri
I don't see why you're performing cat on a directory. Is this a typo? If not, you will not get your intended results. Also, you can grep directly on the file instead of piping the cat output to grep. Read this "useless use of cat".
sorry that is a typo when written into the forum

mytest15=`cat /pathtofile/filename | grep -c filename.$DATE.TXT | grep TRL | wc -l`

basically i know the file has completed writing when it has the word TRL in the file.

---------- Post updated at 02:10 AM ---------- Previous update was at 02:04 AM ----------

Quote:
Originally Posted by Peasant
Other then mentioned, use #!/bin/bash -x and examine the nohup.out during the hang.

If you are on linux system, inotify should provide much better interface for actions on file changes.

Please, if you can, post the entire code and/or explain what are you trying to do so perhaps a better approach could be written.

Hope that helps
Regards
Peasant.
-x i will give that a try.

im positive it could be written a hell of alot better as im still very new.

what the script does is waits for a file to be written to a directory.
when that file arrives, it then waits for it to finish being built by looking for TRL inside the file.
Then it renames the file and moves it.

as i said ran ti yesterday worked fine.
ran it today in the background it didnt see that the file arrived.
so i killed it then ran it
ran it normally...it spotted the file and worked as expected.
i just dont understand why it was in the background it didnt notice that the file was there, and yesterday it worked fine
 

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LEARN ABOUT SUNOS

shells

shells(4)							   File Formats 							 shells(4)

NAME

       shells - shell database

SYNOPSIS

       /etc/shells

DESCRIPTION

       The shells file contains a list of the shells on the system. Applications use this file to determine whether a shell is valid. See getuser-
       shell(3C). For each shell a single line should be present, consisting of the shell's path, relative to root.

       A hash mark (#) indicates the beginning of a comment; subsequent characters up to the end of the line are not interpreted by  the  routines
       which search the file. Blank lines are also ignored.

       The  following  default	shells are used by utilities: /bin/bash, /bin/csh, /bin/jsh, /bin/ksh, /bin/pfcsh, /bin/pfksh, /bin/pfsh, /bin/sh,
       /bin/tcsh,  /bin/zsh,  /sbin/jsh,  /sbin/sh,  /usr/bin/bash,  /usr/bin/csh,  /usr/bin/jsh,  /usr/bin/ksh,  /usr/bin/pfcsh,  /usr/bin/pfksh,
       /usr/bin/pfsh, and /usr/bin/sh, /usr/bin/tcsh, /usr/bin/zsh. Note that /etc/shells overrides the default list.

       Invalid shells in /etc/shells may cause unexpected behavior (such as being unable to log in by way of ftp(1)).

FILES

       /etc/shells	       lists shells on system

SEE ALSO

       vipw(1B), ftpd(1M), sendmail(1M), getusershell(3C), aliases(4)

SunOS 5.10							    4 Jun 2001								 shells(4)
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