sed '/^$/d' file > newfile
or
sed '/^[ \t]*$/d' file > newfile
The first one works for blank lines made of a newline character only.
Thank you for answer.
'\t' doesn't work for some reason, too!
That what I try to figured out: why it could be?
Removing empty lines works fine.
The [ \t] was my original attempt to do that and after that I start to search for different way to patterning the tab and found those macros: <spc>,<tab>, but that does not work for me for some reason.
I perfectly removing all 'blank' line with
Code:
nawk 'NF' file
Any advices why the tab specifiers could doesn't work for me?
I want to grep "xxx(tab)iii" but dunno the way to do it.
I've tried : grep "xxx\tiii" * , but it dont works.
Is there anyone that can help me? :) (3 Replies)
I want to exclude (-v) blank records from a file before analysing it.
I know I can use '^]$' for spaces and tabs but how do you look for lines that have nothing (/n or line feed) ? (2 Replies)
Hi,
I'm using the following to insert lines into file:
sed ${rowNr}i'\
first row\
second row\
third row\
' file.txt
How can I add tab in front of each added line? "\t" or actual TAB does not seem to work?
Thanks! (2 Replies)
I'm using OpenBSD 4.3 & ksh (pdksh) default shell.
I'm trying to use sed to insert a tab into a text file with no luck.
$ sed 's/SusanAppleton/Susan\o011Appleton/' myFile.txt
Susano011Appleton
$ sed 's/SusanAppleton/Susan\tAppleton/' myFile.txt
SusantAppletonI'm close to suicide here. Please... (9 Replies)
Hello All,
I have this file with the below contents
1|2|3|4|
this|that|which|what|
when I use, sed 's/|/\t/g' infile
I get,
1t2t3t4t
thistthattwhichtwhatt
Why is this?? :confused: :wall: (13 Replies)
Hello, I am trying to find a solution to problem that's proving to be beyond my newbie skills. The below files comes from a genetics study. File 1 describes a position on the genome and file 2 does the same but is formatted differently and has more information. I am trying to match all lines in... (5 Replies)
Discussion started by: andmal
5 Replies
LEARN ABOUT PHP
zgrep
ZGREP(1) General Commands Manual ZGREP(1)NAME
zgrep - search possibly compressed files for a regular expression
SYNOPSIS
zgrep [ grep_options ] [ -e ] pattern filename...
DESCRIPTION
Zgrep invokes grep on compressed or gzipped files. These grep options will cause zgrep to terminate with an error code:
(-[drRzZ]|--di*|--exc*|--inc*|--rec*|--nu*). All other options specified are passed directly to grep. If no file is specified, then the
standard input is decompressed if necessary and fed to grep. Otherwise the given files are uncompressed if necessary and fed to grep.
If the GREP environment variable is set, zgrep uses it as the grep program to be invoked.
EXIT CODE
2 - An option that is not supported was specified.
AUTHOR
Charles Levert (charles@comm.polymtl.ca)
SEE ALSO grep(1), gzexe(1), gzip(1), zdiff(1), zforce(1), zmore(1), znew(1)ZGREP(1)