Sponsored Content
Top Forums Shell Programming and Scripting how to delete lines from a file which starts with a specific pattern Post 302476561 by Franklin52 on Thursday 2nd of December 2010 04:10:49 AM
Old 12-02-2010
Code:
grep -v '^45' infile > outfile

or:
Code:
awk '!/^45/'  infile > outfile

 

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
MAKE_SOCKDFR(8) 					      System Manager's Manual						   MAKE_SOCKDFR(8)

NAME
make_sockdfr - Generates frozen route file for SOCKS server SYNOPSIS
make_sockdfr [infile [outfile] ] DESCRIPTION
make_sockdfr reads in a plain-text route file for the SOCKS server and produces a frozen route file as the output. Both arguments are optional. The default for infile is /etc/sockd.route; the default for outfile is /etc/sockd.fr. You may specify infile while omitting outfile, but you cannot specify outfile without also speficying infile. The contents of the frozen route file is essentially the memory image of the parsed input file. Using the frozen route file can reduce the start-up delay of the SOCKS server program since it no longer has to parse the file contents. When the SOCKS server starts, it always looks for the frozen route file /etc/sockd.fr first. If that file is not found, it then tries to use the plain-text route file /etc/sockd.route. If you use frozen route file, you must remember to run make_sockdfr every time after you modify the plain-text file or the SOCKS server will continue to use the frozen version of a previous route file. To find out the contents of a frozen route file, use dump_sockdfr. FILES
/etc/sockd.fr, /etc/sockd.route SEE ALSO
dump_sockdfr(8), sockd.fr(5), sockd.route(5) AUTHOR
Ying-Da Lee, yingda@esd.sgi.com or yingda@best.com May 6, 1996 MAKE_SOCKDFR(8)
All times are GMT -4. The time now is 04:24 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy