Sponsored Content
Top Forums UNIX for Advanced & Expert Users Read file and skip the line starting with # Post 302787265 by beezy on Friday 29th of March 2013 04:58:32 AM
Old 03-29-2013
Quote:
Originally Posted by rangarasan
Hey!!!

Do you really want to create a physical file "valid_servers"? Instead, we can just redirect the output of grep to while loop.

Code:
egrep -v '^#|^$' file1|while read server_name
do
    echo "$server_name"
    # File transfer goes here
done

Cheers,
RangaSmilie
Hi Ranga,
Thanks for your reply,
I had tried this before I post my problem here, too bad it doesn't skip any # in front of the line. Smilie

Last edited by beezy; 03-29-2013 at 05:59 AM.. Reason: typo
 

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

How to skip first line from a file while manupulating the file

I need to put single quotes on the columns of a .csv file. The first row contains the column headers. I need to skip the first row and put quotes for rest of the rows. Would please someone help me with this. Thanks JP (4 Replies)
Discussion started by: JPalt
4 Replies

2. Shell Programming and Scripting

bash: read file line by line (lines have '\0') - not full line has read???

I am using the while-loop to read a file. The file has lines with null-terminated strings (words, actually.) What I have by that reading - just a first word up to '\0'! I need to have whole string up to 'new line' - (LF, 10#10, 16#A) What I am doing wrong? #make file 'grb' with... (6 Replies)
Discussion started by: alex_5161
6 Replies

3. Shell Programming and Scripting

Read .txt file and dropping lines starting with #

Hi All, I have a .txt file with some contents as below: Hi How are you? # Fine and you? I want a script file which reads the .txt file and output the lines which does not start with #. Hi How are you? Help is highly appreciated. Please use code tags when posting data and... (5 Replies)
Discussion started by: bghosh
5 Replies

4. UNIX for Dummies Questions & Answers

skip first line when doing a read of csv file

Folks, how do i skip the first line in a csv, while doing the read of a csv file in to a variable line by line. eg : do echo $line done < $rpt where rpt is path to csv file The initial 1st line is a garbage that i want to avoid, and start reading from 2nd line ... (2 Replies)
Discussion started by: venu
2 Replies

5. Shell Programming and Scripting

want to skip a line in XML file using awk

HI All, I am trying to split a xml using awk. now the issue is i want to skip three lines from the xml file. first two and last one based on pattern. plz some one help. i am new to awk and struggling :wall: <?xml version="1.0"?> <notification> ..... ..... ..... ..... ........ (24 Replies)
Discussion started by: ganesan kulasek
24 Replies

6. Shell Programming and Scripting

Need a program that read a file line by line and prints out lines 1, 2 & 3 after an empty line...

Hello, I need a program that read a file line by line and prints out lines 1, 2 & 3 after an empty line... An example of entries in the file would be: SRVXPAPI001 ERRO JUN24 07:28:34 1775 REASON= 0000, PROCID= #E506 #1065: TPCIPPR, INDEX= 003F ... (8 Replies)
Discussion started by: Ferocci
8 Replies

7. Shell Programming and Scripting

How to read file line by line and compare subset of 1st line with 2nd?

Hi all, I have a log file say Test.log that gets updated continuously and it has data in pipe separated format. A sample log file would look like: <date1>|<data1>|<url1>|<result1> <date2>|<data2>|<url2>|<result2> <date3>|<data3>|<url3>|<result3> <date4>|<data4>|<url4>|<result4> What I... (3 Replies)
Discussion started by: pat_pramod
3 Replies

8. Shell Programming and Scripting

How to read a file starting at certain line number?

I am new to ksh scripts. I would like to be able to read a file line by line from a certain line number. I have a specific line number saved in a variable, say $lineNumber. How can I start reading the file from the line number saved in $lineNumber? Thanks! (4 Replies)
Discussion started by: dcowboys13
4 Replies

9. Shell Programming and Scripting

With script bash, read file line per line starting at the end

Hello, I'm works on Ubuntu server My goal : I would like to read file line per line, but i want to started at the end of file. Currently, I use instructions : while read line; do COMMAND done < /var/log/apache2/access.log But, the first line, i don't want this. The file is long... (5 Replies)
Discussion started by: Fuziion
5 Replies

10. UNIX for Dummies Questions & Answers

How to grep a line not starting with # from a file (there are two lines starting with # and normal)?

e.g. File name: File.txt cat File.txt Result: #INBOUND_QUEUE=FAQ1 INBOUND_QUEUE=FAQ2 I want to get the value for one which is not commented out. Thanks, (3 Replies)
Discussion started by: Tanu
3 Replies
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)
All times are GMT -4. The time now is 09:22 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy