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Top Forums Shell Programming and Scripting Delete a line in a file starting with - Perl one-liner Post 302390929 by ammu on Friday 29th of January 2010 12:08:12 PM
Old 01-29-2010
Delete a line in a file starting with - Perl one-liner

Hi

I need a perl onliner to delete a line in a file starting with few words.
Example

file.txt
----------
my name is don
I live in London
I am woking as engineer

I want to delete a line starting with 'I live in' using perl oneliner and in place edit with out temporary files

Thanks in advance
Ammu
 

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MIC-CHROOT(1)						      General Commands Manual						     MIC-CHROOT(1)

NAME
mc-chroot - chroot into a live image in order to do some changes SYNOPSIS
mic-chroot [options] <image|image fs> <image> is a live image file name, <image fs> is a directory path which contains the whole file system unpacked from a live image. DESCRIPTION
mic-chroot can chroot into a live image to do some changes, you can use it to unpack a live image then do some changes, once changes are done, you can regenerate a live image including those changes you did. mic-image-manager has a GUI tool for mic-chroot, you can use it if you prefer to use GUI instead of command line. OPTIONS
--version show version number -h, --help show this help message -s SAVETO, --save-to=SAVETO Save unpacked filesystem to the specified path --unpack-only Just unpack an image, this is used tounpack an image with -s option together -b BINDMOUNTS, --bind-mounts=BINDMOUNTS Specify bind mount list, for example: -b "/proc:/proc;/:/parentroot" -c CONVERTTO, --convert-to=CONVERTTO Convert it to the specified type live image on exiting, the allowed value is livecd or liveusb --convert-only Just convert an image, this will skip chroot and directly convert an image/filesytem with -c option together -o OUTDIR, --outdir=OUTDIR Output directory to use (default: current work dir) EXAMPLES
Unpack an image to a directory and chroot into it: mic-chroot -s /my/fs/root EXIT STATUS
mic-image-convertor returns a zero exist status if it succeeds, otherwise return non-zero and print error message. AUTHOR
Yi Yang, Anas Nashif, Jianfeng Ding SEE ALSO
mic-image-creator(1), mic-convertor(1), mic-image-writer(1), mic-livecd-iso-to-disk(1), mic-image-manager(1) perl v5.12.3 2011-05-31 MIC-CHROOT(1)
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