Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: deleting few lines from a file dynamically
Top Forums Shell Programming and Scripting deleting few lines from a file dynamically Post 302579930 by ahamed101 on Wednesday 7th of December 2011 04:10:44 AM
Old 12-07-2011
Try this...
Code:
#!/bin/bash
var1="replicate-ignore-db"
...
var8="master-port"
#code below deleted paramters as above if exists in my.cnf
for i in $(seq 1 8)
do
        val=$( eval eval echo \$var$i )
        sed -i "/$val/d" my.cnf
done

--ahamed
This User Gave Thanks to ahamed101 For This Post:
vivek d r
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Deleting Lines from .csv file

Hello All, I have a .csv file and I have to delete the selcted records stored in a vairable e.g echo $lname 7 88 91 94 97 100 103 106 I dont know how to pass the variable name to "sed" for deleting the $lname from a file can any one help as this is very urgent. $lname is changing the... (3 Replies)
Discussion started by: 009satya
3 Replies

2. Shell Programming and Scripting

Deleting last 2 lines from the file.

Hi I have a file & always I need to remove or delete last 2 lines from that file. So in a file if I have 10 lines then it should return me first 8 lines. Can someone help me? (4 Replies)
Discussion started by: videsh77
4 Replies

3. Shell Programming and Scripting

Deleting lines in a file

How do I delete all the lines after the line containing text ***DISCLOSURES*** . I want to delete this line too. Thank you (2 Replies)
Discussion started by: reachsamir
2 Replies

4. UNIX for Dummies Questions & Answers

Deleting whole lines from a file

I have a file with 65 sets of 35 coordinates, and would like to isolate these coordinates so that I can easily copy the coordinates to another file. The problem is, I've got a 9 line header before each set of coordinates (so each set is 44 lines long). There are a zillion threads out there about... (3 Replies)
Discussion started by: red baron
3 Replies

5. UNIX for Advanced & Expert Users

Deleting lines from a file

How I can delete 100 lines anywhere in a file without opening a file and without renaming the file. (11 Replies)
Discussion started by: Nirgude07
11 Replies

6. Shell Programming and Scripting

deleting lines from file

We have a server that logs transactions to a file. I want to write a script that will delete the first 50 lines of the file daily without renameing the file or moving the file. (8 Replies)
Discussion started by: daveisme
8 Replies

7. Shell Programming and Scripting

deleting the lines at the end of the file.

I have a text file with two coulmn first column is just used in to show the line number, these line number are not there in the real file. I want to delete the line 16(in this file) here, even tough there is no data inside it . this empty line is causing me a problem by throwing me garbage... (12 Replies)
Discussion started by: shashi792
12 Replies

8. Shell Programming and Scripting

Extracting few lines from a file based on identifiers dynamically

i have something like this in a file called mysqldump.sql -- -- Table structure for table `Table11` -- DROP TABLE IF EXISTS `Table11`; /*!40101 SET @saved_cs_client = @@character_set_client */; /*!40101 SET character_set_client = utf8 */; CREATE TABLE `Table11` ( `id` int(11) NOT NULL... (14 Replies)
Discussion started by: vivek d r
14 Replies

9. Shell Programming and Scripting

appending lines to a file dynamically

Hi all, I have a file with some number of lines. I need to add certain number of lines from another file which may vary according to the user's input and to it. eg code: I/P file 1 apps/file/xyz apps/file/abc apps/file/def file 2 progs/file/xyz ... (2 Replies)
Discussion started by: Ananthdoss
2 Replies

10. Shell Programming and Scripting

Issue in Concatenation/Joining of lines in a dynamically generated file

Hi, I have a file containing many records delimited by pipe (|). Each record should contain 17 columnns/fields. there are some fields having fields less than 17.So i am extracting those records to a file using the below command awk 'BEGIN {FS="|"} NF !=17 {print}' feedfile.txt... (8 Replies)
Discussion started by: TomG
8 Replies

LEARN ABOUT CENTOS

grub-render-label

GRUB-RENDER-LABEL(1)                                               User Commands                                              GRUB-RENDER-LABEL(1)

NAME

       grub-render-label - generate a .disk_label for Apple Macs.

SYNOPSIS

       grub-render-label [OPTION...] [OPTIONS]

DESCRIPTION

       Render Apple .disk_label.

       -b, --bgcolor=COLOR
              use COLOR for background

       -c, --color=COLOR
              use COLOR for text

       -f, --font=FILE
              use FILE as font (PF2).

       -i, --input=FILE
              read text from FILE.

       -o, --output=FILE
              set output filename. Default is STDOUT

       -t, --text=STRING
              set the label to render

       -v, --verbose
              print verbose messages.

       -?, --help
              give this help list

       --usage
              give a short usage message

       -V, --version
              print program version

       Mandatory or optional arguments to long options are also mandatory or optional for any corresponding short options.

REPORTING BUGS

       Report bugs to <bug-grub@gnu.org>.

SEE ALSO

       The  full  documentation  for grub-render-label is maintained as a Texinfo manual.  If the info and grub-render-label programs are properly
       installed at your site, the command

              info grub-render-label

       should give you access to the complete manual.

grub-render-label (GRUB) 2.02-2ubuntu8.3                             July 2018                                                GRUB-RENDER-LABEL(1)
All times are GMT -4. The time now is 10:35 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy