Sponsored Content
Top Forums Shell Programming and Scripting non alpha characters in sed + making it fast? Post 302458990 by rich@ardz on Sunday 3rd of October 2010 05:08:36 AM
Old 10-03-2010
input:
Code:
hellorichhello
HELLORICHHELLO
SOMTHING-RICH-SOMTHING
SOMTHING@RICH
@RICH
RICH@
-RICH
RICH-
SOMTHING_RICH_SOMTHING
_RICH
RICH_
SOMTHING RICH SOMTHING
somthing rich somthing

output:
Code:
hellorichhello
HELLORICHHELLO
SOMTHING-NICK-SOMTHING
SOMTHING@NICK
@NICK
NICK@
-NICK
NICK-
SOMTHING_NICK_SOMTHING
_NICK
NICK_
SOMTHING NICK SOMTHING
somthing NICK somthing

basically if the string to be replaced has an alphabetic character to the left or right (or left AND right) of it, don't replace it - if it has anything other than an alphabetic char (inc. spaces) to the left or right of it (or left AND RIGHT), replace it...

Last edited by Scott; 10-03-2010 at 07:23 AM.. Reason: Code tags
 

9 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

how to set a variable to accept alpha-numeric characters?

I am working on a shell program that needs to accept alpha-numeric input (i.e., P00375); when I use a simple 'read' statement to read in the input (i.e., read LOG), I receive the message "p00375: bad number". How must I adjust my input statement to accept alpha-numerics? Thanks! Brent (3 Replies)
Discussion started by: bcaunt
3 Replies

2. Shell Programming and Scripting

Perl: How do I remove leading non alpha characters

Hi, Sorry for silly question, but I'm trying to write a perl script to operate a log file that is in following format: (4)ab=1234/(10)bc=abcdef9876/cd=0.... The number in the brackets is the lenghts of the field, "/" is the field separator. Brackets are not leading every field. What I'm... (9 Replies)
Discussion started by: Juha
9 Replies

3. Shell Programming and Scripting

Making Some Characters in file BOLD

Hi All, I want to make some characters to be bold in a file. I have a file e.g aa.log which contains rrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrr gfgfgdaerqrqwrqerqwrwqwrqrqwrqr qqwerqwrqwrqwrqwrqwrqwrqwrq qwrqwrqwrqwrqwrqwrqwrqwrqwr File is too large to view Last line... (2 Replies)
Discussion started by: rajeshorpu
2 Replies

4. Shell Programming and Scripting

Sed or trim to remove non alphanumeric and alpha characters?

Hi All, I am new to Unix and trying to run some scripting on a linux box. I am trying to remove the non alphanumeric characters and alpha characters from the following line. <measResults>883250 869.898 86432.4 809875.22 804609 60023 59715 </measResults> Desired output is: 883250... (6 Replies)
Discussion started by: jackma
6 Replies

5. Shell Programming and Scripting

sed replacing specific characters and control characters by escaping

sed -e "s// /g" old.txt > new.txt While I do know some control characters need to be escaped, can normal characters also be escaped and still work the same way? Basically I do not know all control characters that have a special meaning, for example, ?, ., % have a meaning and have to be escaped... (11 Replies)
Discussion started by: ijustneeda
11 Replies

6. Shell Programming and Scripting

How does this sed expression to remove non-alpha characters work?

Hello! I know that this expression gets rid of non-alphanumeric characters: sed 's///g' and I understand that it is replacing them with nothing - hence the '//'-, but I don't understand how it's doing it. It seems it's finding strings that begin with alphanumeric and replacing them with... (2 Replies)
Discussion started by: bgnersoon2be#1
2 Replies

7. Shell Programming and Scripting

Find/replace alpha characters in string

Hi, I would like to find a 3-letter character series in a string/variable and replace it with x's. An example set of strings is: 563MS333_101_afp_400-100_screening 563MS333_104-525_rjk_525_screening 563MS333_110_dlj_500-100_w24 563MS333_888-100_mmm_424_screening The only constants... (5 Replies)
Discussion started by: goodbenito
5 Replies

8. Shell Programming and Scripting

awk to print column number while ignoring alpha characters

I have the following script that will print column 4 ("25") when column 1 contains "123". However, I need to ignore the alpha characters that are contained in the input file. If I were to ignore the characters my output would be column 3. What is the best way to print my column of interest... (3 Replies)
Discussion started by: ncwxpanther
3 Replies

9. Shell Programming and Scripting

Outputting characters after a given string and reporting the characters in the row below --sed

I have this fastq file: @M04961:22:000000000-B5VGJ:1:1101:9280:7106 1:N:0:86 GGGGGGGGGGGGCATGAAAACATACAAACCGTCTTTCCAGAAATTGTTCCAAGTATCGGCAACAGCTTTATCAATACCATGAAAAATATCAACCACACCA +test-1 GGGGGGGGGGGGGGGGGCCGGGGGFF,EDFFGEDFG,@DGGCGGEGGG7DCGGGF68CGFFFGGGG@CGDGFFDFEFEFF:30CGAFFDFEFF8CAF;;8... (10 Replies)
Discussion started by: Xterra
10 Replies
XMLSTARLET(1)							 xmlstarlet Manual						     XMLSTARLET(1)

NAME
xmlstarlet - command line XML/XSLT toolkit SYNOPSIS
xmlstarlet [<options>] [<command>] [<cmd-options>] INTRODUCTION
XMLStarlet is a set of command line utilities (tools) which can be used to transform, query, validate, and edit XML documents and files us- ing simple set of shell commands in similar way it is done for plain text files using UNIX grep, sed, awk, diff, patch, join, etc commands. This set of command line utilities can be used by those who deal with many XML documents on UNIX shell command prompt as well as for auto- mated XML processing with shell scripts. OPTIONS
--version Display the version of xmlstarlet. --help Display help. COMMANDS
Type: xml <command> --help <ENTER> for command help Available commands include: ed (or edit) Edit/update XML document(s). sel (or select) Select data or query XML document(s) (XPATH, etc). tr (or transform) Transform XML documents(s) using XSLT. val (or validate) Validate XML document(s) (well-formed/DTD/XSD/RelaxNG). fo (or format) Format XML document(s). el (or elements) Display element structure of XML document. c14n (or canonic) XML canonicalization. ls (or list) List directory as XML. esc (or escape) Escape special XML characters. unesc (or unescape) Unescape special XML characters. pyx (or xmln) Convert XML into PYX format (based on ESIS - ISO 8879). p2x (or depyx) Convert PYX into XML. REFERENCES
XMLStarlet is a command line toolkit to query/edit/check/transform XML documents (for more information see http://xmlstar.source- forge.net/). AUTHOR
Mikhail Grushinskiy. XMLSTARLET(1)
All times are GMT -4. The time now is 08:55 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy