Login or Register to Ask a Question and Join Our Community


Shell Programming and Scripting

How get numbers only?

Login to Discuss or Reply to this Discussion in Our Community

 
Thread Tools Search this Thread
Top Forums Shell Programming and Scripting How get numbers only?
# 1  
Old 03-31-2009
How get numbers only?
I have a file with the following contents..say

123 abc 90and /[abd] 1009

from which i only need numbers to be printed.
like 123 90 1009

using any shell command.

Thanks.
# 2  
Old 03-31-2009
Code:
$ perl -ne 'print $1," " while /(\d+)/g; print "\n"'

# 3  
Old 03-31-2009
Thats nice Pludi. But I'd prefer that to be done in shell itself
not possible with shell command,awk or sed?
# 4  
Old 03-31-2009
Possible: yes. Shorter? Probably not. And the Perl command integrates into a pipe or other shell sequence just as well as awk or sed.
# 5  
Old 03-31-2009
Hammer & Screwdriver Here is another approach to the matter
Code:
> echo "123 abc 90and /[abd] 1009"                                          
123 abc 90and /[abd] 1009

> echo "123 abc 90and /[abd] 1009" | tr -d "[:alpha:]|[:punct:]"
123  90  1009

> echo "123 abc 90and /[abd] 1009" | tr -d "[:alpha:]|[:punct:]" | tr -s " "
123 90 1009

# 6  
Old 03-31-2009
No need to invoke an external program such as awk, sed or perl!
Code:
#!/usr/bin/ksh93

str="123 abc 90and /[abd] 1009"
echo "$str"

print ${str//[^0-9]/ }

Output:
Code:
$ ./demo
123 abc 90and /[abd] 1009
123 90 1009
$

# 7  
Old 03-31-2009
All,

What if i have a huge file with nxn matrix of rows and columns and still i would like to have only numbers from every row ? I mean where no. of rows and columns are unpredictable. Any suggestions for that please.

rgds,

Srini
Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. UNIX for Beginners Questions & Answers

Decimal numbers and letters in the same collums: round numbers

Hi! I found and then adapt the code for my pipeline... awk -F"," -vOFS="," '{printf "%0.2f %0.f\n",$2,$4}' xxx > yyy I add -F"," -vOFS="," (for input and output as csv file) and I change the columns and the number of decimal... It works but I have also some problems... here my columns ... (7 Replies)
Discussion started by: echo manolis
7 Replies

2. Shell Programming and Scripting

Adding (as in arithmetic) to numbers in columns in file, and writing new file with new numbers

Hi again. Sorry for all the questions — I've tried to do all this myself but I'm just not good enough yet, and the help I've received so far from bartus11 has been absolutely invaluable. Hopefully this will be the last bit of file manipulation I need to do. I have a file which is formatted as... (4 Replies)
Discussion started by: crunchgargoyle
4 Replies

3. UNIX for Dummies Questions & Answers

Print numbers and associated text belonging to an interval of numbers

##### (0 Replies)
Discussion started by: lucasvs
0 Replies

4. Shell Programming and Scripting

the smallest number from 90% of highest numbers from all numbers in file

Hello All, I am having problem to find what is the smallest number from 90% of highest numbers from all numbers in file. I am having file with thousands of lines and hundreds of columns. I am familiar mainly with bash but I am open to whatever suggestion witch will lead to the solutions. If I... (11 Replies)
Discussion started by: Apfik
11 Replies

5. Shell Programming and Scripting

Help with numbers

Say I have 3 sets of numbers: 043 5326 90432 and I want to select the digits that all 3 have in common! so to answer my question 3 is the only digit that all 3 have in common! Can this be done with 1 command in unix shell? or is it more complicated than I think it is? I don't want an answer... (3 Replies)
Discussion started by: puttster
3 Replies

6. UNIX for Dummies Questions & Answers

Replace US numbers with European numbers

hey, I have a file with numbers in US notation (1,000,000.00) as well as european notation (1.000.000,00) i want all the numbers to be in european notation. the numbers are in a text file, so to prevent that the regex also changes the commas in a sentence/text i thought of: sed 's/,/\./'... (2 Replies)
Discussion started by: FOBoy
2 Replies

7. Shell Programming and Scripting

Check whether there is only numbers

Hi everyone, I must make a script which will be executed as follows : ./script.sh Directory/n.car where there can be as many numbers as we may want. I'd like to : - ignore the Directory ; Meaning I just need n.car - Check the name of the file : has it got some Alphabetic... (7 Replies)
Discussion started by: Lyth_o
7 Replies

8. Shell Programming and Scripting

compare the interval of 2 numbers of input2with interval of several numbers of input1

Help plz Does any one have any idea how to compare interval ranges of 2 files. finding 1-4 (1,2,3,4) of input2 in input1 of same key "a" values (5-10, 30-40, 45-60, 80-90, 100-120 ). Obviously 1-4 is not one of the range with in input1 a. so it should give out of range. finding 30-33(31,32,33)... (1 Reply)
Discussion started by: repinementer
1 Replies

9. Shell Programming and Scripting

read numbers from file and output which numbers belongs to which range

Howdy experts, We have some ranges of number which belongs to particual group as below. GroupNo StartRange EndRange Group0125 935300 935399 Group2006 935400 935476 937430 937459 Group0324 935477 935549 ... (6 Replies)
Discussion started by: thepurple
6 Replies

10. UNIX for Dummies Questions & Answers

seperating records with numbers from a set of numbers

I have two files one (numbers file)contains the numbers(approximately 30000) and the other file(record file) contains the records(approximately 40000)which may or may not contain the numbers from that file. I want to seperate the records which has the field 1=(any of the number from numbers... (15 Replies)
Discussion started by: Shiv@jad
15 Replies
Login or Register to Ask a Question