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Full Discussion: echo and grep commands
Top Forums Shell Programming and Scripting echo and grep commands Post 302597289 by Sundown on Thursday 9th of February 2012 11:40:24 PM
Old 02-10-2012
Question echo and grep commands

Hey im new in this...anything will be helpful...

The user will input the word or phrase .... I want to search the user input in file (by lines) but not all then with this line search on another file ( with the specific line) and show to the user.

Example:

file1.txt
=======
a
aa
aaa
aab
aac


file2.txt (corresponding md5 hashes of every text line)
======
0cc175b9c0f1b6a831c399e269772661
4124bc0a9335c27f086f24ba207a4912
47bce5c74f589f4867dbd57e9ca9f808
e62595ee98b585153dac87ce1ab69c3c
a9ced3dad556814ed46042de696e1849

========
Lets supposed to the user enter (want to crack) this hash: a9ced3dad556814ed46042de696e1849

im using
Code:
grep -n -w a9ced3dad556814ed46042de696e1849 file2.txt

but i want the output --> aac

Any ideas Smilie??


Thanks in advance
 

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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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