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Full Discussion: Bash script to read a file from particular line till required line and process
Top Forums Shell Programming and Scripting Bash script to read a file from particular line till required line and process Post 302923590 by Optimus81 on Monday 3rd of November 2014 04:49:31 PM
Old 11-03-2014
Bash script to read a file from particular line till required line and process
Hi All,

Am trying to write wrapper shell/bash script on a utility tool for which i need to pass 2 files as arugment to execute utility tool.

Wraper script am trying is to do with above metion 2 files.

utility tool accepts :
a. userinfo file : which contains username
b. item file : which contains items to be processed by mentioned users from userinfo file.

Below script works fine for userfile and itemfile

Am thinking of writing a wrapper script which call this script but in the wapper script it should execute utility tool from specified lines to perticular line from userfile and even for itemfile.

for ex : say userfile has 100 users and itemfile has 1000 items. so, i should call the wrapper script with passing argument saying run script for users from line 20-45 from userfile and say item from line 250-400 from itemfile.

basically it should run the utility tool from specified user number to a specfied item numbers.

Code:
#!/bin/bash

#echo "***********************************************"

count=1
userFile=$1

if [ -f $userFile ]; then
 echo "userfile exist"
else
 echo "user file $userFile do not exit, exiting !!!"
 exit 1
fi

for user in ` cat $userFile ` ; do
./dmstool -S rms -h 10.212.45.67 -f /tmp/itemfile -m -u $user
   #sleep 5
    echo "Completed - user $count"
   (( count=$count+1 ))
done

Any help will be much appreciated.

Thanks
Last edited by Optimus81; 11-03-2014 at 05:51 PM.. Reason: code tag added
 

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LEARN ABOUT FREEBSD

ddb

DDB(8)							    BSD System Manager's Manual 						    DDB(8)

NAME

     ddb -- configure DDB kernel debugger properties

SYNOPSIS

     ddb capture [-M -core] [-N -system] print
     ddb capture [-M -core] [-N -system] status
     ddb script scriptname
     ddb script scriptname=script
     ddb scripts
     ddb unscript scriptname
     ddb pathname

DESCRIPTION

     The ddb utility configures certain aspects of the ddb(4) kernel debugger from user space that are not configured at compile-time or easily
     via sysctl(8) MIB entries.

     To ease configuration, commands can be put in a file which is processed using ddb as shown in the last synopsis line.  An absolute pathname
     must be used.  The file will be read line by line and applied as arguments to the ddb utility.  Whitespace at the beginning of lines will be
     ignored as will lines where the first non-whitespace character is '#'.

OUTPUT CAPTURE

     The ddb utility can be used to extract the contents of the ddb(4) output capture buffer of the current live kernel, or from the crash dump of
     a kernel on disk.	The following debugger commands are available from the command line:

     capture [-M core] [-N system] print
	     Print the current contents of the ddb(4) output capture buffer.

     capture [-M core] [-N system] status
	     Print the current status of the ddb(4) output capture buffer.

SCRIPTING

     The ddb utility can be used to configure aspects of ddb(4) scripting from user space; scripting support is described in more detail in
     ddb(4).  Each of the debugger commands is available from the command line:

     script scriptname
	     Print the script named scriptname.

     script scriptname=script
	     Define a script named scriptname.	As many scripts contain characters interpreted in special ways by the shell, it is advisable to
	     enclose script in quotes.

     scripts
	     List currently defined scripts.

     unscript scriptname
	     Delete the script named scriptname.

EXIT STATUS

     The ddb utility exits 0 on success, and >0 if an error occurs.

EXAMPLES

     The following example defines a script that will execute when the kernel debugger is entered as a result of a break signal:

	   ddb script kdb.enter.break="show pcpu; bt"

     The following example will delete the script:

	   ddb unscript kdb.enter.break

     For further examples, see the ddb(4) and textdump(4) manual pages.

SEE ALSO

     ddb(4), textdump(4), sysctl(8)

HISTORY

     The ddb utility first appeared in FreeBSD 7.1.

AUTHORS

     Robert N M Watson

BUGS

     Ideally, ddb would not exist, as all pertinent aspects of ddb(4) could be configured directly via sysctl(8).

BSD
								 December 24, 2008							       BSD
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