Ignore identical lines Post: 302259623

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Ignore Lines Begining With #

Is there a standard way to make a shell script read a file, or list, and skip each line that contains # at the begining, or ignores the content starting after a # in line? I'm looking to mimic the way commenting in a shell script normally works. This way I can comment my text files and lists my...

2. Shell Programming and Scripting

How can I ignore only the lines which have # at the begining?

From the below file I want to grep only the lines except the comment sections. But grep -v "#" is eliminating the last line because it has one # in between. Any idea how can I ignore only the lines which have # at the begining (I mean comment lines) ? Thanks a lot to all in advance C Saha

3. Shell Programming and Scripting

replace 2 identical strings on different lines

I am looking to replace two or more strings on different lines using sed, but not with the same variable. IE # cat xxx.file <abc> abc def ghi abc def ghi abc def ghi currently I can only change each line with the same pattern: # sed -e '/<abc>/!s/abc$.*$/jkl mno/' xxx.file abc jkl mno...

4. Shell Programming and Scripting

expect - How to ignore empty lines?

Hi all, I'm looking for a way to generate an error when a command does not print an expected message. For example : test.sh : echo hi!test.exp : exp_internal 1 spawn ./test.sh expect { "hi!" {puts "bingo!"} "*" {puts "error!" ; exit 1} } I expected test.exp to match the string...

5. UNIX for Dummies Questions & Answers

more than 10 identical lines

I have a file that looks like this 10 user1s, 5 user2s and 10 users3. 10.10.1.1 user1 10.10.1.1 user1 10.10.1.1 user1 10.10.1.1 user1 10.10.1.1 user1 10.10.1.1 user1 10.10.1.1 user1 10.10.1.1 user1 10.10.1.1 user1 10.10.1.1 user1 10.10.1.2 user2 10.10.1.2 user2 10.10.1.2 user2...

6. Shell Programming and Scripting

Scan a file in realtime and execute certain commands on encountering 5 consecutive identical lines

Mysql log has something like below: I need a bash shell script that will do the following: 1) The script will scan the mysql.log file constantly in real time (something like tail -F mysql.log) 2) If it encounters 5 consecutive identical lines then it would invoke some commands (say...

7. Shell Programming and Scripting

sed print all lines between second and third identical lines

I am trying to extract a table of data (mysql query output) from a log file. I need to print everything below the header and not past the end of the table. I have spent many hours searching with little progress. I am matching the regexp +-\{99\} with no problem. I just can't figure out how to print...

8. Shell Programming and Scripting

Combine identical lines and average the one variable field

I have the following file 299899 chrX_299716_300082 196 78.2903 299991 chrX_299982_300000 18.2538 Tajd:0.745591 FayWu:-0.245701 T2:1.45 299899 chrX_299716_300082 196 78.2903 299991 chrX_299982_300000 18.2538 Tajd:0.745591 FayWu:-0.245701 T2:0.283 311027 chrX_310892_311162 300 91.6452...

9. UNIX for Beginners Questions & Answers

How to delete identical lines while leaving one undeleted?

Hi, I have a file as follows. file1 Hello Hi His Hi Hi Hungry hi so I want to delete identical lines while leaving one of them undeleted. So desired output will be Hello Hi

10. UNIX for Beginners Questions & Answers

awk - If field value of consecutive records are the identical print portion of lines

I have some data that looks like this: PXD= ZW< 1,6 QR> QRJ== 1,2(5) QR> QRJ== 4,1(2) QR> QRJ== 4,2 QRB= QRB 4,2 QWM QWM 6,2 R<C ZW< 11,2 R<H= R<J= 6,1 R>H XZJ= 1,2(2) R>H XZJ= 2,6(2) R>H XZJ= 4,1(2) R>H XZJ= 6,2 RDP RDP 1,2 What I would like to do is if fields $1 and $2 are...

LEARN ABOUT REDHAT

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  is used to invoke the grep on compress'ed or gzip'ed files. All options specified are passed directly to grep.  If no file is speci-
       fied, 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  zgrep  is invoked as zegrep or zfgrep then egrep or fgrep is used instead of grep.  If the GREP environment variable is set, zgrep uses
       it as the grep program to be invoked. For example:

	   for sh:  GREP=fgrep	zgrep string files
	   for csh: (setenv GREP fgrep; zgrep string files)

AUTHOR

       Charles Levert (charles@comm.polymtl.ca)

SEE ALSO

       grep(1), egrep(1), fgrep(1), zdiff(1), zmore(1), znew(1), zforce(1), gzip(1), gzexe(1)

																	  ZGREP(1)

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Ignore Lines Begining With #

Discussion started by: sysera

2. Shell Programming and Scripting

How can I ignore only the lines which have # at the begining?

Discussion started by: csaha

3. Shell Programming and Scripting

replace 2 identical strings on different lines

Discussion started by: prkfriryce

4. Shell Programming and Scripting

expect - How to ignore empty lines?

Discussion started by: whbos