11-24-2017
Hints:
- For a start
means patterns matching anything between 3.70 and 3.99( you got rid of the odd cases!) ...
Remember grep is not looking for numeric but patterns ( string ) and now in what is left you have in common "3."
- How would to look for all words starting with any letter between c and l ?
How would you do that with numeric char?
My 2 cents
Good luck
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Hello...
I am new to unix and I am wondering if in a C-shell script , Are we supposed to use only whole numbers........ for example..if a program needs to calculate the average of some numbers........
@ avg = (($1 +$2 + $3)/3)) is returning a whole number.........How can a decimal be... (7 Replies)
Discussion started by: ravindra22
7 Replies
2. Shell Programming and Scripting
Hi All,
Here is my original string: 192.168.2.1.8088. The target string I want: 192.168.2.1, how can I use awk or sed or other command to get rid of .8088 in the string?
Thanks,
Ray (9 Replies)
Discussion started by: rluo
9 Replies
3. UNIX for Dummies Questions & Answers
Is there a way when using awk to specify the number of decimal points needed for the output? (2 Replies)
Discussion started by: cosmologist
2 Replies
4. Shell Programming and Scripting
Hi Experts,
Quick quesion:
I want to sort this in the file , but not working, when using # sort file name
305.932
456.470
456.469
456.468
456.467
172.089
456.467
456.466
456.465
111.573
111.578
111.572
111.572
87.175
87.174
75.898 (4 Replies)
Discussion started by: rveri
4 Replies
5. Shell Programming and Scripting
I have a file full of coordinates of the form:
37.68899917602539 58.07500076293945 57.79100036621094
The numbers don't always have the same number of decimal points. I need to reduce the decimal points of all the numbers (there are 128 rows of 3 numbers) to 2.
I have tried to do this... (2 Replies)
Discussion started by: crunchgargoyle
2 Replies
6. Shell Programming and Scripting
i am having a varialbe a , which is input to my file
i want to multiply this input with value .43, and assign it to variable b.
i tried it as below:
#!/bin/sh
a=$1
b=`expr $1\*0.43`
echo b=$b
error : expr: non-integer argument
Please tell me , how to do this.
Thanks (10 Replies)
Discussion started by: rishifrnds
10 Replies
7. UNIX for Dummies Questions & Answers
Hi All,
I would like to set decimal point to 16 in the following bash script but it has syntax error at }:
awk '{printf"%.16e", (a<500,a++,$1/(a*1.1212121212121229e-02))}' input.dat >output.datHow may I set it in the correct way please? Thank you very much! (6 Replies)
Discussion started by: sxiong
6 Replies
8. UNIX for Dummies Questions & Answers
Dear all,
I have a txt file with only one column which contains p values. My data looks like this:
5.04726976606584e-190
2.94065711152402e-189
2.94065711152402e-189
9.19932135717279e-176
1.09472516659859e-170
1.24974648916809e-170
0.1223974648916
0.9874974648916
...
what I want... (2 Replies)
Discussion started by: forevertl
2 Replies
9. Shell Programming and Scripting
Hi,
I have one input file which is delimited by pipe. I want to put decimal points in this input file at particular position in particular column and also get the negative sign (if any) at start of that column.
$ cat Input_file.txt
11|10102693|1|20151202|10263204|20151127|N|0001... (7 Replies)
Discussion started by: Prathmesh
7 Replies
10. UNIX for Beginners Questions & Answers
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
LEARN ABOUT REDHAT
pcregrep
PCREGREP(1) General Commands Manual PCREGREP(1)
NAME
pcregrep - a grep with Perl-compatible regular expressions.
SYNOPSIS
pcregrep [-Vcfhilnrsvx] pattern [file] ...
DESCRIPTION
pcregrep searches files for character patterns, in the same way as other grep commands do, but it uses the PCRE regular expression library
to support patterns that are compatible with the regular expressions of Perl 5. See pcre(3) for a full description of syntax and semantics.
If no files are specified, pcregrep reads the standard input. By default, each line that matches the pattern is copied to the standard out-
put, and if there is more than one file, the file name is printed before each line of output. However, there are options that can change
how pcregrep behaves.
Lines are limited to BUFSIZ characters. BUFSIZ is defined in <stdio.h>. The newline character is removed from the end of each line before
it is matched against the pattern.
OPTIONS
-V Write the version number of the PCRE library being used to the standard error stream.
-c Do not print individual lines; instead just print a count of the number of lines that would otherwise have been printed. If sev-
eral files are given, a count is printed for each of them.
-ffilename
Read patterns from the file, one per line, and match all patterns against each line. There is a maximum of 100 patterns. Trailing
white space is removed, and blank lines are ignored. An empty file contains no patterns and therefore matches nothing.
-h Suppress printing of filenames when searching multiple files.
-i Ignore upper/lower case distinctions during comparisons.
-l Instead of printing lines from the files, just print the names of the files containing lines that would have been printed. Each
file name is printed once, on a separate line.
-n Precede each line by its line number in the file.
-r If any file is a directory, recursively scan the files it contains. Without -r a directory is scanned as a normal file.
-s Work silently, that is, display nothing except error messages. The exit status indicates whether any matches were found.
-v Invert the sense of the match, so that lines which do not match the pattern are now the ones that are found.
-x Force the pattern to be anchored (it must start matching at the beginning of the line) and in addition, require it to match the
entire line. This is equivalent to having ^ and $ characters at the start and end of each alternative branch in the regular
expression.
SEE ALSO
pcre(3), Perl 5 documentation
DIAGNOSTICS
Exit status is 0 if any matches were found, 1 if no matches were found, and 2 for syntax errors or inacessible files (even if matches were
found).
AUTHOR
Philip Hazel <ph10@cam.ac.uk>
Last updated: 15 August 2001
Copyright (c) 1997-2001 University of Cambridge.
PCREGREP(1)