Sponsored Content
Top Forums Shell Programming and Scripting Delete all lines starting with # character Post 303002525 by RudiC on Saturday 26th of August 2017 09:47:05 AM
Old 08-26-2017
Does your editor understand character classes? Try [[:space:]] in lieu of the single space...
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Delete lines starting with XX or YY or ZZ or ....

Hi There! My final task for today is to delete lines starting with certain numbers for e.g., my text block is and i want to delete all lines starting with 11 or 17 or 21 I know i can use multiple sed commands like sed '/^11,/d' <filename> sed '/^17,/d' <filename> sed '/^21,/d'... (2 Replies)
Discussion started by: orno
2 Replies

2. Shell Programming and Scripting

In Sed how can I replace starting from the 7th character to the 15th character.

Hi All, Was wondering how I can do the following.... I have a String as follows "ACCTRL000005022RRWDKKEEDKDD...." This string can be in a file called tail.out or in a Variable called $VAR2 Now I have another variable called $VAR1="000004785" (9 bytes long), I need the content of... (5 Replies)
Discussion started by: mohullah
5 Replies

3. Shell Programming and Scripting

Search the word to be deleted and delete lines above this word starting from P1 to P3

Hi, I have to search a word in a text file and then I have to delete lines above from the word searched . For eg suppose the file is like this: Records P1 10,23423432 ,77:1 ,234:2 P2 10,9089004 ,77:1 ,234:2 ,87:123 ,9898:2 P3 456456 P1 :123,456456546 P2 abc:324234 (2 Replies)
Discussion started by: vsachan
2 Replies

4. Shell Programming and Scripting

delete lines starting with a pattern

i have a file sample.txt containing i want to delete lines starting with 123 neglecting spaces and tabs. but not lines containing 123. i.e. i want files sample.txt as help me thanxx (4 Replies)
Discussion started by: yashwantkumar
4 Replies

5. Shell Programming and Scripting

Delete multiple lines starting with a specific pattern

Hi, just tried some script, awk, sed for the last 2 hours and now need help. Let's say I have a huge file of 800,000 lines like this : It's a tedious job to look through it, I'd like to remove those useless lines in it as there's a few thousands : Or to be even more precise : if line1 =... (6 Replies)
Discussion started by: Zurd
6 Replies

6. Shell Programming and Scripting

sed or awk delete character in the lines before and after the matching line

Sample file: This is line one, this is another line, this is the PRIMARY INDEX line l ; This is another line The command should find the line with “PRIMARY INDEX” and remove the last character from the line preceding it (in this case , comma) and remove the first character from the line... (5 Replies)
Discussion started by: KC_Rules
5 Replies

7. Shell Programming and Scripting

Delete lines starting with these strings

Platform : RHEL 5.8 I have text file called myapplication.log . In this file, I have around 800 lines which start with the followng three strings PWRBRKER-3493 PWRBRKER-7834 SCHEDULER-ERROR How can I delete these lines in one go ? (13 Replies)
Discussion started by: omega3
13 Replies

8. Shell Programming and Scripting

How to delete lines starting with specific string?

Dear all, I would like to delete even lines starting with "N" together with their respective titles which are actually odd lines. Below is the example of input file. I would like to remove line 8 and 12 together with its title line, i.e., line 7 and 11, respectively.... (2 Replies)
Discussion started by: huiyee1
2 Replies

9. UNIX for Dummies Questions & Answers

How to grep a line not starting with # from a file (there are two lines starting with # and normal)?

e.g. File name: File.txt cat File.txt Result: #INBOUND_QUEUE=FAQ1 INBOUND_QUEUE=FAQ2 I want to get the value for one which is not commented out. Thanks, (3 Replies)
Discussion started by: Tanu
3 Replies

10. Shell Programming and Scripting

Delete all lines except a line starting with string

Shell : bash OS : RHEL 6.8 I have a file like below. $ cat pattern.txt hello txt1 txt2 txt3 some other text txt4 I want to remove all lines in this file except the ones starting with txt . How can I do this ? (4 Replies)
Discussion started by: omega3
4 Replies
ISWSPACE(3)						     Linux Programmer's Manual						       ISWSPACE(3)

NAME
iswspace - test for whitespace wide character SYNOPSIS
#include <wctype.h> int iswspace(wint_t wc); DESCRIPTION
The iswspace() function is the wide-character equivalent of the isspace(3) function. It tests whether wc is a wide character belonging to the wide-character class "space". The wide-character class "space" is disjoint from the wide-character class "graph" and therefore also disjoint from its subclasses "alnum", "alpha", "upper", "lower", "digit", "xdigit", "punct". The wide-character class "space" contains the wide-character class "blank". The wide-character class "space" always contains at least the space character and the control characters 'f', ' ', ' ', ' ', 'v'. RETURN VALUE
The iswspace() function returns nonzero if wc is a wide character belonging to the wide-character class "space". Otherwise it returns zero. CONFORMING TO
C99. NOTES
The behavior of iswspace() depends on the LC_CTYPE category of the current locale. SEE ALSO
isspace(3), iswctype(3) COLOPHON
This page is part of release 3.53 of the Linux man-pages project. A description of the project, and information about reporting bugs, can be found at http://www.kernel.org/doc/man-pages/. GNU
1999-07-25 ISWSPACE(3)
All times are GMT -4. The time now is 09:39 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy