05-18-2010
10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
I'm writing a small script thats purpose is to validate a single command line argument to make sure it is an integer. Also acceptable are a leading "+" or "-", but no more than one.
Example: "5" "-2" "+4" are all valid
If its invalid I simply print out a message saying so, otherwise I... (2 Replies)
Discussion started by: FuzzyNips
2 Replies
2. UNIX for Dummies Questions & Answers
Hi I've been searching google and have not found what egrep -c means. Does anyone know where I can get a cheat sheet or what that -c means?
thanks,
Linda (2 Replies)
Discussion started by: leelm
2 Replies
3. Shell Programming and Scripting
Hi,
I don't understand what is the correct way of writing:
egrep -l '{$min,$max} $pattern' $filename
I tryed to search on google how to wtrite {$min, $max}, but I don't have success (7 Replies)
Discussion started by: DNAx86
7 Replies
4. UNIX for Dummies Questions & Answers
what does "egrep """ do ?? Can anyone explain this with an example .. please .. (2 Replies)
Discussion started by: risshanth
2 Replies
5. UNIX for Dummies Questions & Answers
Hi Guys,
we have a shell script which basically query the Database which retrieves huge data and use the data with "egrep" .
Now there is some data which contains characters like "abc)" and the same is used like below :
"egrep (.+\|GDPRAB16\|GDPR/11702 96 abc)\|$ temp.txt"
now while... (7 Replies)
Discussion started by: sagarjani
7 Replies
6. UNIX for Dummies Questions & Answers
HI,
I have two files filea, fileeb
filea
z283110z67
xx65686377
xx654681zz
xx652836xx
xx653881zz
xx65480z11
xx654z5466
xx65510000
xx65670000
xx656z0000
xx656z1822
fileb (3 Replies)
Discussion started by: krao
3 Replies
7. Shell Programming and Scripting
My data is something like shown below.
date1 date2 aaa bbbb ccccc
date3 date4 dddd eeeeeee ffffffffff ggggg hh
I want the output like this
date1date2 aaa eeeeee
I serached in the forum but didn't find the exact matching solution. Please help. (7 Replies)
Discussion started by: rdhanek
7 Replies
8. Shell Programming and Scripting
i am new to bash or scripting period and had a question about how I could use the egrep command (or if there should be another command to use) to accomplish the following goal. Need to look through the ndm files labeled as S20090709.999 and if I cannot find a specific date then search the archived... (5 Replies)
Discussion started by: freddie999
5 Replies
9. Shell Programming and Scripting
Hi All,
Can some one please help me how to grep the comments from "oracle" & "sybase" code. I would like to grep below type of pattern.
--
/* */
Please help. (6 Replies)
Discussion started by: gr8_usk
6 Replies
10. Shell Programming and Scripting
Hi
I am trying to run CMD that combining EGREP and PERL in multiple files
cat *07:00.22-12-13.txt | egrep" NAME| perl -ne 'print if /^sid9/ .. /^!/' "
I need the see the NAME and the text from sid9 to !
how can I use the EGERP in parallel to the PERL ?
This is one file
Qqq... (2 Replies)
Discussion started by: sharong
2 Replies
LEARN ABOUT DEBIAN
snowdrop
SNOWDROP(1) General Commands Manual SNOWDROP(1)
NAME
sd-eng, sd-engf, sd-c - text watermarking and watermark recovery
SYNOPSIS
sd-eng [-6] -i origfile newfile "Recipient" ["Comment"]
sd-eng [-6] -e origfile newfile
sd-eng [-6] -l
DESCRIPTION
snowdrop is a stenographic text watermarking and watermark recovery system. It is composed of three programs:
sd-eng Watermark normal English text.
sd-engf
Watermark fine quality English text, yeilding higher quality output but encoding less information.
sd-c Watermark C code.
The three programs operate similarly, with the same parameters and usage. The watermark is encoded in using a number of techniques, such
as whitespace reformatting, typo insertation, word substitutions, punctuation changes, and for C code, logic reordering, variable name man-
gling, etc.
The watermark is a md5sum, which is retreivable from as little as 5 or 10 lines of the watermarked document. Even large changes to a medium
sized document should not obscure the watermark, as it is stored redundently in multiple independent channels.
The three usage modes are adding a watermark, checking for the presense of a watermark, and listing the contents of your database of water-
marks. Note that to later check a watermark, you must retain a copy of the original, un-watermarked file.
OPTIONS
-i Inject a watermark into a file. You must pass it the original file, the filename to output the watwrmarked version to, information
about who you intend the watermarked file for, and an optional comment.
-e Extract a watermark from a file. Needs the original file and the new file that you suspect bears the watermark.
-l Lists the contents of the watermark database. Each of the three programs will have a different list.
-6 Enable 64 bit watermarking. The default is a weak 32 bit watermark.
ENVIRONMENT
SD_SYNONYMS
This variable can be used to point snowdrop at a customized synonyms file.
FILES
~/.snowdrop/database
Database of watermarked files.
SEE ALSO
/usr/share/snowdrop/README
Explain snowdrop in more depth, its limitations, and how to write additional watermarking modules for other tpyes of files.
AUTHOR
Michal Zalewski <lcamtuf@coredump.cx>
SNOWDROP(1)