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Top Forums Shell Programming and Scripting Avoid locking between two files: Post 302862069 by gnnsprapa on Thursday 10th of October 2013 06:00:03 AM
Old 10-10-2013
Avoid locking between two files:

Hi frnz,

I have requirement as follows..

There are two Modules say A and B...n both have few set of files..we have one script which read these files and load into database(vertica) table..while running script smtimes i encounter an error like one table is getting loaded from A module file also and module B file also..and due to this licking my script fails.

Now A & B run parellely so when A's file getting loaded into table it locks the table and B files fails to load..

so i want to add a piece of code where my script will wait till A file completley load into table and stop the file of B..n once A file loaded it will start loading B file into B..

Overall i need to Develop table update dependency tracking to avoid query failure due to table lock.
I knw its very confusing but if anyone can provide some input , i wud be very grateful..

ThanxSmilie
 

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DIFF(1) 						      General Commands Manual							   DIFF(1)

NAME
diff - print differences between two files SYNOPSIS
diff [-c | -e | -C n] [-br]file1 file2 OPTIONS
-C n Produce output that contains n lines of context -b Ignore white space when comparing -c Produce output that contains three lines of context -e Produce an ed-script to convert file1 into file2 -r Apply diff recursively to files and directories of EXAMPLES
diff file1 file2 # Print differences between 2 files diff -C 0 file1 file2 # Same as above diff -C 3 file1 file2 # Output three lines of context with every diff -c file1 file2 # Same diff /etc /dev # Compares recursively the directories /etc and /dev diff passwd /etc # Compares ./passwd to /etc/passwd DESCRIPTION
the same name, when file1 and file2 are both directories" difference encountered" Diff compares two files and generates a list of lines telling how the two files differ. Lines may not be longer than 128 characters. If the two arguments on the command line are both directories, diff recursively steps through all subdirectories comparing files of the same name. If a file name is found only in one directory, a diagnostic message is written to stdout. A file that is of either block special, character special or FIFO special type, cannot be compared to any other file. On the other hand, if there is one directory and one file given on the command line, diff tries to compare the file with the same name as file in the directory directory. SEE ALSO
cdiff(1), cmp(1), comm(1), patch(1). DIFF(1)
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