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Shell Programming and Scripting
Replacing a string
Post 302893454 by Pradeep_1990 on Wednesday 19th of March 2014 09:45:09 AM
03-19-2014
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1. Shell Programming and Scripting
hii,
i need a unix command which replaces all occurrences of a substring within a string with another substring.
My solution:
string="plalstalplal"
sub1="al"
sub2="mlkl"
echo sed 's/$s2/$s3/g' < s1 > p
i want to know how to read the variables s2 and s3..
thaks a lot
bye (1 Reply)
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so my code will be
#!/bin/bash
read -p "please input the old string:" string1
read -p "please input the new string:" string2
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Hi all
suppose i have a string "abacus sabre", i need to replace occurences 'ab' with 'cd' and i need to store this result into same string and i need to return this result from script to the calling function, where as the string is passed from calling function.
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Hi there,
I'd like to replace STRING_ZERO in FILE_ZERO.txt with the value of VALUEi-th by using something like that:
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VALUE2=2000
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for((i=1;i<=3;i++));
do
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file7
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Hi,
Can anyone help me know how to replace a string with the new line
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file1
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Dear all,
I have a file like below. I want to replace all the '.' in the 3rd column with 'NA'. I don't know how to do that. Anyone has an iead? Thanks a lot!
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Hi All,
I have below requirement:
I need to read each line in file.txt and replace string starting from position 9 to 24 {111111111111111,222222222222222,333333333333333} by common string "444444444444444" and save file.
File.txt:
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LEARN ABOUT CENTOS
new-kernel-pkg
NEW-KERNEL-PKG(8) System Manager's Manual NEW-KERNEL-PKG(8) NAME
new-kernel-pkg - tool to script kernel installation SYNOPSIS
new-kernel-pkg [-v] [--mkinitrd] [--rminitrd] [--dracut] [--initrdfile=initrd-image [--depmod] [--rmmoddep] [--kernel-args=args] [--remove-args=args] [--banner=banner] [--multiboot=multiboot] [--mbargs=mbargs] [--make-default] [--add-dracut-args] [--add-plymouth-initrd] [--host-only] <--install | --remove | --update | --rpmposttrans> <kernel-version> DESCRIPTION
new-kernel-pkg is a tool used in packaging to automate the installation of a new kernel, including the creation of an initial ram filesys- tem image, updating of bootloader configuration, and other associated tasks. OPTIONS
-v Be verbose. --mkinitrd Create a new initial ram filesystem image. --rminitrd Remove an initial ram filesystem image. --dracut When creating a new initial ram filesystem image, use dracut(8) rather than mkinitrd(8). Used in conjunction with --mkinitrd . --initrdfile=initrd-image Use the specified file as the initial ram filesystem image. --depmod Create modules.dep and related files. --rmmoddep Remove modules.dep and related files. --kernel-args=args Use args as the boot command line for this kernel. --remove-args=args Remove specified kernel arguments for this kernel. --banner=banner Display banner as the banner text in the bootloader. --multiboot=multiboot-image Use multiboot-image as a multiboot image. --mbargs=mbargs Use mbargs as arguments to the multiboot image. --make-default Make this kernel the default boot option. --add-dracut-args Automatically generate dracut options and add them to the kernel command line. --add-plymouth-initrd Automatically add plymouth to the initial ram filesystem image. --host-only Make an initial ram filesystem image that is specific to the running system. --install kernel-version Install a new kernel. --remove kernel-version Remove an installed kernel. --update kernel-version Update the specified kernel. --rpmposttrans kernel-version Run the rpmposttrans for the specified kernel. SEE ALSO
grubby(8) installkernel(8) AUTHORS
Erik Troan Jeremy Katz Peter Jones Wed Apr 14 2010 NEW-KERNEL-PKG(8)