04-16-2008
Comparing two files and appending only missing lines.
Hi All,
I am a newbie to Shell scripting. Please help me with the Following problem,
1. I have two files with the same name in different locations in the same machine.
Eg: /root/testfolder/a ---- location 1
/tmp/testfolder/a ----- location 2
2. I want to compare the files in location 1 and location 2.
Eg: diff /root/testfolder/a /tmp/testfolder/a
(Please suggest the best way using diff )
3. I must append only the lines missing in location 1(i.e. /root/testfolder/a) without losing any content of location 1.
Eg:
File in location 1
![Frown Smilie](https://www.unix.com/images/smilies/frown.gif)
/root/testfolder/a)
Added line in Location 1
This is a test Script
But i am stuck.Please help
This is Added line to LOCATION 1(/root/testfolder/a)
File in location 2
![Frown Smilie](https://www.unix.com/images/smilies/frown.gif)
/tmp/testfolder/a)
Added Line in the Location 2 (/tmp/testfolder/a)
This is a test Script
But i am stuck.Please help
This is added line for testing in LOCATION 2(/tmp/testfolder/a)
Executing diff command:
diff /root/testfolder/a /tmp/testfolder/a
Say output of the diff command looks like this:
1c1
< Added line in Location 1 (/root/testfolder/a)
---
> Added Line in the Location 2 (/tmp/testfolder/a)
4c4
< This is Added line to LOCATION 1(/root/testfolder/a)
---
> This is added line for testing in LOCATION 2(/tmp/testfolder/a)
Here,
I am concerned only to append those lines starting with ">" to the correct lines of /root/testfolder/a
Expected result in /root/testfolder/a
Added Line in the Location 2 (/tmp/testfolder/a)
Added line in Location 1
This is a test Script
This is added line for testing in LOCATION 2(/tmp/testfolder/a)
But i am stuck.Please help
Please help me develop a shell script to solve the above posted problem.
Thanks in advance
Karthick.
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LEARN ABOUT PHP
debug_print_backtrace
DEBUG_PRINT_BACKTRACE(3) 1 DEBUG_PRINT_BACKTRACE(3)
debug_print_backtrace - Prints a backtrace
SYNOPSIS
void debug_print_backtrace ([int $options], [int $limit])
DESCRIPTION
debug_print_backtrace(3) prints a PHP backtrace. It prints the function calls, included/required files and eval(3)ed stuff.
PARAMETERS
o $options
- As of 5.3.6, this parameter is a bitmask for the following options:
debug_print_backtrace(3) options
+----------------------------+---------------------------------------------------+
|DEBUG_BACKTRACE_IGNORE_ARGS | |
| | |
| | Whether or not to omit the "args" index, and |
| | thus all the function/method arguments, to save |
| | memory. |
| | |
+----------------------------+---------------------------------------------------+
o $limit
- As of 5.4.0, this parameter can be used to limit the number of stack frames printed. By default ($limit= 0) it prints all stack
frames.
RETURN VALUES
No value is returned.
CHANGELOG
+--------+-----------------------------------------+
|Version | |
| | |
| | Description |
| | |
+--------+-----------------------------------------+
| 5.4.0 | |
| | |
| | Added the optional parameter $limit. |
| | |
| 5.3.6 | |
| | |
| | Added the optional parameter $options. |
| | |
+--------+-----------------------------------------+
EXAMPLES
Example #1
debug_print_backtrace(3) example
<?php
// include.php file
function a() {
b();
}
function b() {
c();
}
function c(){
debug_print_backtrace();
}
a();
?>
<?php
// test.php file
// this is the file you should run
include 'include.php';
?>
The above example will output something similar to:
#0 c() called at [/tmp/include.php:10]
#1 b() called at [/tmp/include.php:6]
#2 a() called at [/tmp/include.php:17]
#3 include(/tmp/include.php) called at [/tmp/test.php:3]
SEE ALSO
debug_backtrace(3).
PHP Documentation Group DEBUG_PRINT_BACKTRACE(3)