Sponsored Content
Top Forums Shell Programming and Scripting how to delete lines from a file which starts with a specific pattern Post 302476555 by mady135 on Thursday 2nd of December 2010 03:55:47 AM
Old 12-02-2010
Question how to delete lines from a file which starts with a specific pattern

I need to delete those lines from a file, which starts with 45.
How to do it?
 

10 More Discussions You Might Find Interesting

1. Programming

Delete specific lines in a text file

Hi, experts, I would like to create a function that can calculate the total number of lines in a saved text file and delete specific lines in that particular file (I only want the last few lines). Hav anybody have the experience and giv me a hand in this? (9 Replies)
Discussion started by: dniz
9 Replies

2. Shell Programming and Scripting

delete lines in file matching a pattern

I have a text file, a sample of which is as follows: r/- * 0: WINDOWS/Microsoft.NET/Framework/v2.0.50727/ASP.NETWebAdminFiles/Images/headerGRADIENT_Tall.gif r/- * 0: WINDOWS/SoftwareDistribution/Download/cf8ec753e88561d2ddb53e183dc05c3e/backoff.jpg r/- * 0: ... (2 Replies)
Discussion started by: stumpyuk
2 Replies

3. Shell Programming and Scripting

Delete specific lines from a file

Hi, I have a file ( all_users.ldif ) of the following format: cn=orcladmin, cn=Users, dc=maximus,dc=com cn=PUBLIC, cn=Users, dc=maximus,dc=com cn=portal,cn=users,dc=maximus,dc=com cn=portal_admin,cn=users,dc=maximus,dc=com cn=uddi_publisher,cn=Users,dc=maximus,dc=com... (4 Replies)
Discussion started by: itzz.me
4 Replies

4. Shell Programming and Scripting

Delete lines that starts with a certain letter

How can I delete those lines that starts with a certain letter? abc def ghi xyz abc def ace gik moq abe imq gxm I want to delete the line that starts with "x". Thanks! (4 Replies)
Discussion started by: kingpeejay
4 Replies

5. HP-UX

How to delete specific pattern in a file with SED?

I have one file which is having content as following... 0513468211,,,,20091208,084005,5,,2,3699310, 0206554475,,,,20090327,123634,85,,2,15615533 0206554475,,,,20090327,134431,554,,2,7246177 0103000300,,,,20090523,115501,89,,2,3869929 0736454328,,,,20091208,084005,75,,2,3699546... (7 Replies)
Discussion started by: ganesh.mandlik
7 Replies

6. 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

7. UNIX for Dummies Questions & Answers

How to delete specific lines (2n+3 line, n=0,1,2...296) in a file?

Dear everyone, I have a file with 900 lines (there is only numbers in one line, no string), I only need the lines 2+3n (n=0,1...296), i.e line 2, 5, 8, 11...888. I tried google but only the results such as how to delete all the odd lines or all the even lines with 'awk' command. Thanks in... (4 Replies)
Discussion started by: phamnu
4 Replies

8. Shell Programming and Scripting

Printing next two lines from a file after grepping a specific pattern

Hi I have a file like # vi require.txt 1,BANK,Read blocks that cycle. yellow Read blocks. 2,ACCOUNT,Finished Red Finished . 3,LOAN, pipe white pipe 4,PROFIT,Resolve. black Resolve Am using like cat require.txt | grep -w ACCOUNTThe output I get is (8 Replies)
Discussion started by: Priya Amaresh
8 Replies

9. Shell Programming and Scripting

Delete specific lines from files based on another file

I have some text files in a folder named ff as follows. I need to delete the lines (in-place editing)in these files based on another file aa.txt. 32bm.txt: 249 253 A P - 0 0 8 0, 0.0 6,-1.4 0, 0.0 2,-0.4 -0.287 25.6-102.0 -74.4 161.1 37.1 13.3 10.9 250... (2 Replies)
Discussion started by: aden
2 Replies

10. Shell Programming and Scripting

Delete lines that contain a pattern from specific line to the end.

Gents, I am trying to delete all lines which start with "H" character, but keeping the fist header. Example In the input file I will delete all lines starting from line 8 which contents character "H" to the end of the file. I try sed '8,10000{/^H/d;}' file But as don't know the end... (1 Reply)
Discussion started by: jiam912
1 Replies
curs_deleteln(3X)														 curs_deleteln(3X)

NAME
deleteln, wdeleteln, insdelln, winsdelln, insertln, winsertln - delete and insert lines in a curses window SYNOPSIS
#include <curses.h> int deleteln(void); int wdeleteln(WINDOW *win); int insdelln(int n); int winsdelln(WINDOW *win, int n); int insertln(void); int winsertln(WINDOW *win); DESCRIPTION
The deleteln and wdeleteln routines delete the line under the cursor in the window; all lines below the current line are moved up one line. The bottom line of the window is cleared. The cursor position does not change. The insdelln and winsdelln routines, for positive n, insert n lines into the specified window above the current line. The n bottom lines are lost. For negative n, delete n lines (starting with the one under the cursor), and move the remaining lines up. The bottom n lines are cleared. The current cursor position remains the same. The insertln and winsertln routines, insert a blank line above the current line and the bottom line is lost. RETURN VALUE
All routines return the integer ERR upon failure and an OK (SVr4 specifies only "an integer value other than ERR") upon successful comple- tion. PORTABILITY
These functions are described in the XSI Curses standard, Issue 4. The standard specifies that they return ERR on failure, but specifies no error conditions. NOTES
Note that all but winsdelln may be macros. These routines do not require a hardware line delete or insert feature in the terminal. In fact, they won't use hardware line delete/insert unless idlok(..., TRUE) has been set on the current window. SEE ALSO
curses(3X) curs_deleteln(3X)
All times are GMT -4. The time now is 07:35 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy