Visit Our UNIX and Linux User Community


parse csv file, sha1 hash and output


 
Thread Tools Search this Thread
Top Forums Shell Programming and Scripting parse csv file, sha1 hash and output
# 1  
Old 01-28-2009
parse csv file, sha1 hash and output

I have a file, not really a csv, but containing delineated data just the same. Lets call that file "raw_data.txt". It contains data in the format of company name:fein number like this:

Code:
first company name:123456789
second company name:987654321

what i need to do is read this file, apply sha1 to the fein field and then output that into a new file, we'll call "hashed_data.txt". So hashed_data.txt should contain data like

Code:
first company name:f7c3bc1d808e04732adf679965ccc34ca7ae3441
second company name:bfe54caa6d483cc3887dce9d1b8eb91408f1ea7a

i have tried looping thru the file with awk like so

Code:
read FILE
while read line
do
        awk 'BEGIN{FS=OFS=":"}{print $1, $2}'
done < $FILE

but I'm stuck on how to run the second field thru sha1sum
# 2  
Old 01-28-2009
bash solution.
Code:
IFS=":" && \
while read name fein
        do echo "$name:"$(sha1 -qs $fein)
done < file > newfile

Note: You should read the sha1sum man

Last edited by danmero; 01-28-2009 at 12:30 PM.. Reason: Add note
# 3  
Old 01-28-2009
thanks! checking it out now
# 4  
Old 01-28-2009
if your echo supports '-n' have you tried to put that into your echo statement?

Code:
echo -n "$name:"$(sha1sum <<< $fein)

I'm not sure if it will or wont work, I just don't know if it's been tried.
# 5  
Old 01-28-2009
i think the command I'm actually going for is sha1sum. When i modified the first snipit you posted to this it seemed to work

Code:
IFS=":" && \
while read name fein
        do echo "$name:"$(sha1sum <<< $fein)
done < raw_data.txt > hashed_data.txt

however, it's getting a newline feed in the hash as well

the accurate hash of
123456789
should be
f7c3bc1d808e04732adf679965ccc34ca7ae3441

Code:
echo -n 123456789 | sha1sum

will produce this hash

so need a way to trim the newline feed out of there.

Code:
tr -d '\n'

but where would it go ion the above snipit?
# 6  
Old 01-28-2009
Quote:
Originally Posted by rwuerth
if your echo supports '-n' have you tried to put that into your echo statement?

Code:
echo -n "$name:"$(sha1sum <<< $fein)

I'm not sure if it will or wont work, I just don't know if it's been tried.
seems to just remove the new line feed between the lines, IE ouput is now

Code:
first company name:179c94cf45c6e383baf52621687305204cef16f9  -second company name:a1b42d633e975efc2f665bda21f94e419c1b6074  -

# 7  
Old 01-28-2009
Okay take the -n out of the echo.

try this before the echo statement

Code:
fein=`echo $fein | tr -d /\n/`

Or as I think about it, just

Code:
fein=`echo -n $fein`


Previous Thread | Next Thread
Test Your Knowledge in Computers #294
Difficulty: Easy
Ubuntu is a free and open-source Linux distribution based on Slackware.
True or False?

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Need a script to parse data and output to csv

I am not too savvy with arrays and am assuming that what I am looking for needs arrays. This is my requirement. So I have the raw data that gets updated to a log as shown below StudentInfo: FullInfo = { Address = Newark Age = 20 Name= John } StudentInfo:... (2 Replies)
Discussion started by: sidnow
2 Replies

2. Shell Programming and Scripting

Apply md5 hash to a field in csv file

I have a .csv file and I want to md5 hash the second column for each row in the file. File is something like data1,foobar1,123,345 data2,foobar2,456,9393 data3,foobar3,1002,10109 Output would be like data1,6c81243028f8e455fa617dd5f0232ce1,123,345... (3 Replies)
Discussion started by: jjwags
3 Replies

3. Shell Programming and Scripting

How to parse this file using awk and output in CSV format?

My source file looks like this: Cust-Number = "101" Cust-Name="Joe" Cust-Town="London" Cust-hobby="tennis" Cust-purchase="200" Cust-Number = "102" Cust-Name="Mary" Cust-Town="Newyork" Cust-hobby="reading" Cust-purchase="125" Now I want to parse this file (leaving out hobby) and... (10 Replies)
Discussion started by: Balav
10 Replies

4. Shell Programming and Scripting

Dynamically parse BibTeX and create hash of hash

Hello gurus, Iam trying to parse following BibTex file (bibliography.bib): @book{Lee2000a, abstract = {Abstract goes here}, author = {Lee, Wenke and Stolfo, Salvatore J}, title = {{Data mining approaches for intrusion detection}}, year = {2000} } @article{Forrest1996, abstract =... (0 Replies)
Discussion started by: wakatana
0 Replies

5. Shell Programming and Scripting

how to parse this file and obtain a .csv or .xls

Hello Expert, I have a file in the following format: SYNTAX_VERSION 5 MONITOR "NAME_TEMPLATES" DESCRIPTION "Monitors for contents of error " INTERVAL "1m" MONPROG "script.sh NAME_TEMPLATES" MAXTHRESHOLD GEN_BELOW_RESET SEVERITY Major ... (17 Replies)
Discussion started by: Ant-one
17 Replies

6. Programming

SHA1 hash calculation

hi i want to generate SHA1 hash of string in Linux (atmark) and downloaded the XYSSL-0.9 version code for the same.i have the algorithm which takes file as argument and returns hash of file . And of same file while I generated the key using online tools then it doesn't match with my compiled... (4 Replies)
Discussion started by: ahsaas42
4 Replies

7. Shell Programming and Scripting

Parse csv file

Hi, Our requirement is to parse the input file(.csv format). The each column in the file is delimited with comma. We need to take each column and apply some business validation rule. If data itself contains comma, then those fields are enclosed with double quotes ("). We can see this double... (7 Replies)
Discussion started by: vfrg
7 Replies

8. Shell Programming and Scripting

Parse XML file into CSV with shell?

Hi, It's been a few years since college when I did stuff like this all the time. Can someone help me figure out how to best tackle this problem? I need to parse a file full of entries that look like this: <eq action="A" sectyType="0" symbol="PGR" exch="CA" curr="VEF" sess="NORM"... (7 Replies)
Discussion started by: Pcushing
7 Replies

9. Shell Programming and Scripting

CSV File parse help in Perl

Folks, I have a bit of an issue trying to obtain some data from a csv file using PERL. I can sort the file and remove any duplicates leaving only 4 or 5 rows containing data. My problem is that the data contained in the original file contains a lot more columns and when I try ro run this script... (13 Replies)
Discussion started by: lodey
13 Replies

10. UNIX for Advanced & Expert Users

How to Parse a CSV file into a Different Format

Hi I have a CSV file with me in this format Currency, USD, EUR, USD, 1.00, 1.32, EUR, 0.66, 1.00, How do I transpose the file to get to the format below. currency, currency, rate USD, USD, 1.00 USD, EUR, 1.32 EUR, USD, 0.66 EUR, EUR, 1.00 Thanks for your help We are using... (2 Replies)
Discussion started by: cdesiks
2 Replies

Featured Tech Videos