If you want this to done automatically then insert above commands in "your own rm" file [ make sure your PATH goes first to YOUR rm instead of standard UNIX rm ]
The code needs to be MUCH more complex than this if you're going to create your own rm utility from end. If you create $HOME/bin/rm containing:
then the command sequence:
will remove every entry from your sample text.file.
Here is my problem I'm hoping you guru's can help me figure out. I have a text file that contains comma delimited columns. What I'm looking to do is see if the 24th column on each row in the file contains a value (not null), and then write/append that line to a different file.
I've been... (4 Replies)
I have a text file with rows of information (it is basically a ls command information(o/p from ls command))
I need to remove the lines ending with a .cnt extension and keep the lines ending with .zip extension, how to accomplish this.
I also only need the date,size and name of the file from every... (2 Replies)
Hi,
I'm trying to remove multiple lines of text based off a series of different words and output it to a new file
The document contains a ton of data but i want to delete any line that has the following
mx1.rr.biz.com or ns2.ri.biz.com
i tried using grep -v filename "mx1.rr.biz.com" >... (3 Replies)
How do I remove line that do not contain text, but that do contain tabs?
I have tried the command
cat file | awk NF
but that doesn't work when the lines contain tabs (and spaces).
I have also tried:
cat file | sed '/^$/d' (9 Replies)
Hello,
I have few lines to be inserted in file_lines_to_insert.
In another file final_file, I have to add lines from above file file_lines_to_insert before a particular pattern.
e.g.
$ cat file_lines_to_insert => contents are
abc
def
lkj
In another file final_file, before a... (6 Replies)
Hi Everybody! First post! Totally noobie.
I'm using the terminal to read a poorly formatted book.
The text file contains, in the middle of paragraphs, hyphenation to split words that are supposed to be on multiple pages. It looks ve -- ry much like this.
I was hoping to use grep -v " -- "... (5 Replies)
hi all,
trying this using shell/bash with sed/awk/grep
I have two files, one containing one column, the other containing multiple columns (comma delimited).
file1.txt
abc12345
def12345
ghi54321
...
file2.txt
abc1,text1,texta
abc,text2,textb
def123,text3,textc
gh,text4,textd... (6 Replies)
I have a file similar to the below. I am selecting only the paragraphs with @inlineifset.
I am using the following command
sed '/@inlineifset/,/^ *$/!d;
s/@inlineifset{mrg, @btpar{@//' $flnm >> $ofln
This produces
@section Correlations between
seismograms,,,,}}
... (5 Replies)
Discussion started by: Danette
5 Replies
LEARN ABOUT LINUX
md5sum.textutils
MD5SUM(1) User Commands MD5SUM(1)NAME
md5sum - compute and check MD5 message digest
SYNOPSIS
md5sum [OPTION]... [FILE]...
DESCRIPTION
Print or check MD5 (128-bit) checksums.
With no FILE, or when FILE is -, read standard input.
-b, --binary
read in binary mode
-c, --check
read MD5 sums from the FILEs and check them
--tag create a BSD-style checksum
-t, --text
read in text mode (default)
The following five options are useful only when verifying checksums:
--ignore-missing
don't fail or report status for missing files
--quiet
don't print OK for each successfully verified file
--status
don't output anything, status code shows success
--strict
exit non-zero for improperly formatted checksum lines
-w, --warn
warn about improperly formatted checksum lines
--help display this help and exit
--version
output version information and exit
The sums are computed as described in RFC 1321. When checking, the input should be a former output of this program. The default mode is
to print a line with checksum, a space, a character indicating input mode ('*' for binary, ' ' for text or where binary is insignificant),
and name for each FILE.
BUGS
Do not use the MD5 algorithm for security related purposes. Instead, use an SHA-2 algorithm, implemented in the programs sha224sum(1),
sha256sum(1), sha384sum(1), sha512sum(1), or the BLAKE2 algorithm, implemented in b2sum(1)AUTHOR
Written by Ulrich Drepper, Scott Miller, and David Madore.
REPORTING BUGS
GNU coreutils online help: <http://www.gnu.org/software/coreutils/>
Report md5sum translation bugs to <http://translationproject.org/team/>
COPYRIGHT
Copyright (C) 2017 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>.
This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law.
SEE ALSO
Full documentation at: <http://www.gnu.org/software/coreutils/md5sum>
or available locally via: info '(coreutils) md5sum invocation'
GNU coreutils 8.28 January 2018 MD5SUM(1)