08-02-2009
Extracting numeric from string
I have a file whose contents are:
$ cat file1
cfd_V03R37
cfd_V03R38
tried
sed 's/[^0-9]//g' file1 > file2
$cat file1
0337
0338
Is there any way by which i can work on same file and write o/p to the same file instead of using file2
Last edited by vjasai; 08-02-2009 at 11:06 AM..
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Hi,
I have read some figures from a text file by getting the position and wish to do some checking, but it seem like it won't work.
eg. my figure is 0.68 it still go the the else statement,
it seems like it treat it as a text instead of number.
Anybody can Help ? Thanks.
# only... (3 Replies)
Discussion started by: kflee2000
3 Replies
2. Shell Programming and Scripting
Hi,
Need to extract a string from one file and search the same in other files.
Ex:
I have file1 of hundred lines with no delimiters not even space.
I have 3 more files.
I should get 1 to 10 characters say substring from each line of file1 and search that string in rest of the files and get... (1 Reply)
Discussion started by: mohancrr
1 Replies
3. Shell Programming and Scripting
Hi all,
I am having a problem in comparing numeric value with string.
I have a variable in my script which gets the value dynamically. It can be a numeric value or a string.
I have to do separate task based on its value numeric or sting variable VARIABLE.
I grep FILE_COUNT and obtained... (7 Replies)
Discussion started by: naren_0101bits
7 Replies
4. Shell Programming and Scripting
given a string passed to a program that supposed to be numeric and of a certain length say 8 digits - so say for e.g. need to verify this 01234567
How would I parse this string to validat it meet requirements
I tried to use * | sed /\(\{8})/
Thanks in advance (1 Reply)
Discussion started by: dragrid
1 Replies
5. Programming
Hi,
how to check the given string is numeric or not , without converting ( using strtol...).
for ex: if string is C01 - non-numeric data
if string is 001 - numeric data
TIA (11 Replies)
Discussion started by: knowledge_gain
11 Replies
6. Shell Programming and Scripting
I have some variables containing for example
m02-npt02-sr40-syn-dv0p01-16x12drw
m02-npt02-sr40-syn-dv0p02-16x12drw
m02-npt02-sr40-dv0p03-syn-16x12drw
I want to extract the dv entry for example
dv0p01
dv0p02
dv0p03
Then I want to convert to a numeric, the p specifies the... (5 Replies)
Discussion started by: kristinu
5 Replies
7. Shell Programming and Scripting
Hi ,
I have a number say 12345001 which needs to be parsed. Its a number that has no delimiters.I have to read the last three digits and then the rest of digits irrespective of the total length of the number. The digits then have to be swapped and changed to a fixed length. The fillers to be... (10 Replies)
Discussion started by: Sheel
10 Replies
8. Shell Programming and Scripting
I checked all the previous threads related to this and tried this.
My input is all numbers or decimals greater than zero everytime.
I want to check the same in the korn shell script.
Just validate the string to be numeric.
This is what I am doing.
var="12345"
if ) -o "$var" !=... (14 Replies)
Discussion started by: megha2525
14 Replies
9. Programming
I have a string
opt="row234"
I want to put "row" in a string and 234 in an int.
In general it should be
opt="textnum"
I want to store text in a string and num in an int. (6 Replies)
Discussion started by: kristinu
6 Replies
10. Shell Programming and Scripting
Hello,
I have a file of strings a below:-
4358RYFHD9845
28/COC/UYF984
9834URD 98HJDU
I need to extract all the first numeric character of every sting as follows:-
4358
28
9834
thanks to suggest ASAP
Regards,
Jasi
Use code tags, thanks. (7 Replies)
Discussion started by: jassi10781
7 Replies
diff3(1) General Commands Manual diff3(1)
Name
diff3 - 3-way differential file comparison
Syntax
diff3 [-ex3] file1 file2 file3
Description
The command compares three versions of a file, and publishes the ranges of text that disagree, flagged with the following codes:
==== all three files differ
====1 file1 is different
====2 file2 is different
====3 file3 is different
The type of change needed to convert a given range of a given file to some other is indicated in one of these ways:
f : n1 a Text is to be appended after line number n1 in file f, where f = 1, 2, or 3.
f : n1 , n2 c
Text is to be changed in the range line n1 to line n2. If n1 = n2, the range may be abbreviated to n1.
The original contents of the range follows immediately after a c indication. When the contents of two files are identical, the contents of
the lower-numbered file is suppressed.
Options
-3 Produces an editor script containing the changes between file1 and file2 that are to be incorporated into file3.
-e Produces an editor script containing the changes between file2 and file3 that are to be incorporated into file1.
-x Produces an editor script containing the changes among all three files.
Examples
Under the -e option, publishes a script for the editor that incorporates into file1 all changes between file2 and file3 - that is, the
changes that would normally be flagged ==== and ====3. Option -x (-3) produces a script to incorporate only changes flagged ==== (====3).
The following command applies the resulting script to `file1':
(cat script; echo '1,$p') | ed - file1
Restrictions
Text lines that consist of a single `.' defeat -e.
Files
/tmp/d3?????
/usr/lib/diff3
See Also
cmp(1), comm(1), diff(1), dffmk(1), join(1), sccsdiff(1), uniq(1)
diff3(1)