What about using "ed", or "ex"?
Say, you had a list of files and directories in a text file named tmp.list.
If you wanted to get rid of all items matching "Desktop" (the same as using "grep -v Desktop tmp.list > file.tmp; mv file.tmp tmp.list), you could do this:
... Piece of cake, eh?
I have a file which has about 500K records and I need to delete about 50 records from the file. I know line numbers and am using
sed '13456,13457,......d' filename > new file.
It does not seem to be working.
Any help will greatly appreciated. (5 Replies)
Input:
a
b
b
c
d
d
I need:
a
c
I know how to get this (the lines that have duplicates) :
b
d
sort file | uniq -d
But i need opossite of this. I have searched the forum and other places as well, but have found solution for everything except this variant of the problem. (3 Replies)
Hi All,
I have a very huge file (4GB) which has duplicate lines. I want to delete duplicate lines leaving unique lines. Sort, uniq, awk '!x++' are not working as its running out of buffer space.
I dont know if this works : I want to read each line of the File in a For Loop, and want to... (16 Replies)
Hi
This is a sample of my data file.
##field PH01000000 1 4869017
#PH01000000G0240
WWW278545G0240 P.he_model_v1.0 erine 119238 121805 . - . ID=PH01000000G0240;Description="zinc finger, C3HC4 type domain containing protein, expressed"... (7 Replies)
Hello,
I have file of more than 10000 lines.
I want to delete 40 lines after every 20 lines.
e.g from a huge file, i want to delete line no from 34 - 74, then 94 - 134 etc and so on.
Please let me know how i can do it.
Best regards, (11 Replies)
Hi,
I have a txt document having a format like this:
DATA1 | DATA2 | DATA3 | 23-JAN-20 23:41:34
DATA1 | DATA2 | DATA3 | 23-JAN-20 23:41:32
DATA1 | DATA2 | DATA3 | 23-JAN-20 23:41:30
...
DATA1 | DATA2 | DATA3 | 23-JAN-20 22:35:31
DATA1 | DATA2 | DATA3 | 23-JAN-20 22:30:34
DATA1 | DATA2 |... (1 Reply)
Discussion started by: gc_sw
1 Replies
LEARN ABOUT DEBIAN
e2tools
E2TOOLS(7) Miscellaneous Information Manual E2TOOLS(7)NAME
e2tools - utilities to manipulate files in an ext2/ext3 filesystem
DESCRIPTION
E2tools is a simple set of GPL'ed utilities to read, write, and manipulate files in an ext2/ext3 filesystem. These utilities access a
filesystem directly using the ext2fs library. I wrote these tools in order to copy files into a linux filesystem on a machine that does not
have ext2 support. Of course, they can also be used on a linux machine to read/write to disk images or floppies without having to mount
them or have root access.
Supported functionality:
e2cp copy files
e2mv move files
e2rm remove files
e2mkdir
create directory
e2ln create hard links
e2ls list files/directories
e2tail output the last part of a file
In general, to specify a directory or file on an ext2 filesystem for the e2tools utilities, use the following form:
filesystem:directory_path
The filesystem can be an unmounted partition or a regular file that's been formatted to contain an ext2 filesystem. In general, if a com-
mand takes multiple file names on the command line, if the first one contains an ext2 file specification, the rest of the files are assumed
to be on the same filesystem until another one is explicitly stated:
/tmp/boot.img:/tmp/file1
/tmp/file2
/tmp/file3
/tmp/boot2.img:/tmp/file4
Files 1-3 are on /tmp/boot.img and the last file is on /tmp/boot2.img
SEE ALSO e2cp(1), e2ln(1), e2ls(1), e2mkdir(1), e2mv(1), e2rm(1), e2tail(1).
AUTHOR
The e2tools were written by Keith Sheffield <sheff@pobox.com>.
This manual page was written by Lucas Wall <lwall@debian.org>, for the Debian project (but may be used by others).
March 2, 2005 E2TOOLS(7)