Login or Register to Ask a Question and Join Our Community


Shell Programming and Scripting

AWK Help

Login to Discuss or Reply to this Discussion in Our Community

 
Thread Tools Search this Thread
Top Forums Shell Programming and Scripting AWK Help
# 1  
Old 03-31-2007
AWK Help
HI All,

Need a help

Suppose I have a file having the data

1,FF,233

where the second field is Hex
now I want to convert this hex in dec and see the output as

1,255,233

Request you all to help

Regards,
Gaurav Goel
# 2  
Old 03-31-2007
If you have Python, here's an alternative
Code:
for line in open("file"):
    line = line.strip().split(",")
    print "%s,%s,%s" % (line[0],str(int(line[1],16)), line[2])

otherwise, people have rolled out these functions in awk (i have not used them). you can have a try
Code:
function hex2dec(x,    h, i, n, l) {
    h = "0123456789ABCDEF..........abcdef"
    for (i = l = length(x); i > 0; i--)
        n += (index(h, substr(x, i, 1)) - 1) % 16 * 16 ^ (l - i)
    return n

}

function dec2hex(d) {
    return sprintf("%lx", d)

}

# 3  
Old 03-31-2007
Using printf
Using printf
HTML Code:
#/bin/ksh
for v in $(cut -d, -f2 /tmp/hex) ; do
   printf '%d\n' "0x$v"
done
Using bc
HTML Code:
#/bin/ksh
 for v in $(cut -d, -f2 /tmp/hex) ; do
   print "ibase=16;$v" |bc
 done
cat /tmp/hex
1,FF,233
1,EF,233

Output:
255
239

Hi Gurus,
Please let us know if the following awk can be used for the above conversion,
HTML Code:
 awk -F, ' { printf("The Decimal value of %s is [%x]\n", $2,$2) }'  /tmp/hex
I tried it but always gives me 0 for hexadecimal value.

Thanks
Nagarajan Ganesan
# 4  
Old 03-31-2007
In ksh...
Code:
#! /usr/bin/ksh
typeset -i16 xf2
typeset -i10 df2
typeset -l f2
while IFS=, read f1 f2 f3 ; do
        xf2=16#$f2
        ((df2=xf2))
        echo  $f1,$df2,$f3
done
exit 0

# 5  
Old 04-02-2007
Quote:
Originally Posted by ennstate
Please let us know if the following awk can be used for the above conversion,
HTML Code:
 awk -F, ' { printf("The Decimal value of %s is [%x]\n", $2,$2) }'  /tmp/hex
I tried it but always gives me 0 for hexadecimal value.
You can convert decimal to hexa and not the reverse using printf.
# 6  
Old 04-02-2007
Quote:
Originally Posted by anbu23
You can convert decimal to hexa and not the reverse using printf.
Code:
awk -v VAR=A 'END{ printf"%s %s\"%s\n", "echo \"ibase=16;", VAR, " | bc" }' /dev/null | sh

Well, thats kind of possible! Smilie
# 7  
Old 04-02-2007
Quote:
Originally Posted by matrixmadhan
Code:
awk -v VAR=A 'END{ printf"%s %s\"%s\n", "echo \"ibase=16;", VAR, " | bc" }' /dev/null | sh

Well, thats kind of possible! Smilie
What i meant was, its not possible using format specifiers provided in printf.
Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

awk output yields error: awk:can't open job_name (Autosys)

Good evening, Im newbie at unix specially with awk From an scheduler program called Autosys i want to extract some data reading an inputfile that comprises jobs names, then formating the output to columns for example 1. This is the inputfile: $ more MapaRep.txt ds_extra_nikira_usuarios... (18 Replies)
Discussion started by: alexcol
18 Replies

2. Shell Programming and Scripting

Pass awk field to a command line executed within awk

Hi, I am trying to pass awk field to a command line executed within awk (need to convert a timestamp into formatted date). All my attempts failed this far. Here's an example. It works fine with timestamp hard-codded into the command echo "1381653229 something" |awk 'BEGIN{cmd="date -d... (4 Replies)
Discussion started by: tuxer
4 Replies

3. Shell Programming and Scripting

Passing awk variable argument to a script which is being called inside awk

consider the script below sh /opt/hqe/hqapi1-client-5.0.0/bin/hqapi.sh alert list --host=localhost --port=7443 --user=hqadmin --password=hqadmin --secure=true >/tmp/alerts.xml awk -F'' '{for(i=1;i<=NF;i++){ if($i=="Alert id") { if(id!="") if(dt!=""){ cmd="sh someScript.sh... (2 Replies)
Discussion started by: vivek d r
2 Replies

4. Shell Programming and Scripting

HELP with AWK one-liner. Need to employ an If condition inside AWK to check for array variable ?

Hello experts, I'm stuck with this script for three days now. Here's what i need. I need to split a large delimited (,) file into 2 files based on the value present in the last field. Samp: Something.csv bca,adc,asdf,123,12C bca,adc,asdf,123,13C def,adc,asdf,123,12A I need this split... (6 Replies)
Discussion started by: shell_boy23
6 Replies

5. Shell Programming and Scripting

awk command to compare a file with set of files in a directory using 'awk'

Hi, I have a situation to compare one file, say file1.txt with a set of files in directory.The directory contains more than 100 files. To be more precise, the requirement is to compare the first field of file1.txt with the first field in all the files in the directory.The files in the... (10 Replies)
Discussion started by: anandek
10 Replies

6. Shell Programming and Scripting

Comparison and editing of files using awk.(And also a possible bug in awk for loop?)

I have two files which I would like to compare and then manipulate in a way. File1: pictures.txt 1.1 1.3 dance.txt 1.2 1.4 treehouse.txt 1.3 1.5 File2: pictures.txt 1.5 ref2313 1.4 ref2345 1.3 ref5432 1.2 ref4244 dance.txt 1.6 ref2342 1.5 ref2352 1.4 ref0695 1.3 ref5738 1.2... (1 Reply)
Discussion started by: linuxkid
1 Replies

7. Shell Programming and Scripting

Problem with awk awk: program limit exceeded: sprintf buffer size=1020

Hi I have many problems with a script. I have a script that formats a text file but always prints the same error when i try to execute it The code is that: { if (NF==17){ print $0 }else{ fields=NF; all=$0; while... (2 Replies)
Discussion started by: fate
2 Replies

8. Shell Programming and Scripting

awk: assign variable with -v didn't work in awk filter

I want to filter 2nd column = 2 using awk $ cat t 1 2 2 4 $ VAR=2 #variable worked in print $ cat t | awk -v ID=$VAR ' { print ID}' 2 2 # but variable didn't work in awk filter $ cat t | awk -v ID=$VAR '$2~/ID/ { print $0}' (2 Replies)
Discussion started by: honglus
2 Replies

9. Shell Programming and Scripting

scripting/awk help : awk sum output is not comming in regular format. Pls advise.

Hi Experts, I am adding a column of numbers with awk , however not getting correct output: # awk '{sum+=$1} END {print sum}' datafile 2.15291e+06 How can I getthe output like : 2152910 Thank you.. # awk '{sum+=$1} END {print sum}' datafile 2.15079e+06 (3 Replies)
Discussion started by: rveri
3 Replies

10. Shell Programming and Scripting

Awk problem: How to express the single quote(') by using awk print function

Actually I got a list of file end with *.txt I want to use the same command apply to all the *.txt Thus I try to find out the fastest way to write those same command in a script and then want to let them run automatics. For example: I got the file below: file1.txt file2.txt file3.txt... (4 Replies)
Discussion started by: patrick87
4 Replies
Login or Register to Ask a Question