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Shell Programming and Scripting
How to remove blank lines
Post 302524968 by ningy on Wednesday 25th of May 2011 08:21:35 AM
05-25-2011
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¿How can i remove blank lines between all lines in a long text file?
Example
WrongFile.txt :
Line 1
Line 2
Line 3
CorrectFile.txt :
Line 1
Line 2
Line 3
Thanks in advance
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------
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blank1
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.
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I have a file with the below data, i would like to remove the end blank lines with no data. I used the below commands but could not able to succeed, could you please shed some light.
Commands Used:
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123 tab .......
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Hi Guys,
I have been trying to remove blank lines from a file with no success. I tried using all the following options on the file:
tr -s '\n' < abc.txt
grep -v "^$" abc.txt
sed '/^$/d' abc.txt
sed '/./!d' abc.txt
awk '/./' abc.txt
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I really hope someone can help me with this. I have several php files from a forum that I run, that now for some reason have blank lines after every line. Is there an easy way to make a script that does the following:
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When I 'vi' my test file I see some blank lines. However once I do :set list to display hidden characters, I see the empty lines literally like this:
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LEARN ABOUT ULTRIX
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)