Unix Pipeline help Post: 89708

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1. Programming

C program help please! input from pipeline

I have a project where I have to use bzcat to uncompress a file and use that output as the data to run another program on. I understand that you would do (bzcat filename.bz2 ! program name) but then how do you access that data in the c program??? Please help thanks

2. Shell Programming and Scripting

Comments within a shell pipeline

I've got a very ugly pipeline for analyzing web server logs (but nevermind the application; I've come across this in other scripts as well). I want to nicely comment the steps in the pipeline, but I can't seem to do it. I know, for instance that in csh/sh/bash, a # begins a comment, and any...

3. Shell Programming and Scripting

How Unix tee to send pipeline output to 2 pipes ?

Hi, I would like to process, filter the same ASCII asynchronous live data stream in more than one pipe pipeline. So the one pipeline should filter out some records using grep key word and more than one pipes pipelines each should grep for another key words, each set seperately for each...

4. Shell Programming and Scripting

Retaining Pipeline values

Hi, I am trying to calculate a few values using the below code but it dosent seem to be working. for i in 1 2 3 4 5 6 7 8 do j=`expr $i + 3` x =`head -$j temp1|tail -1|cut -f24 -d","` y =`head -$j temp1|tail -1|cut -f25 -d","` c =`expr $x / $y` echo "$c" >> cal_1 done I am not...

5. Shell Programming and Scripting

Shell pipeline help for a n00b

I need to read input from a file, and make sure nothing prints after column 72. basically, ignore input after character 72 until the next newline character. Any help is appreciated. I have been searching forever!

6. Shell Programming and Scripting

uniq -c in the pipeline

Hello gurus - I must be missing something, or there is a better way - pls enlighten me I'm on a Solaris 10 vm running the following pipeline to reduce some apache logs (actually lynx dumps of /server-status/ when threads are above a threshold) to a set of offending DDoS IP addresses. awk...

7. Shell Programming and Scripting

Change the delimiter from Comma to Pipeline

Hello All, I need to convert a csv file to pipeline delimiter file in UNIX. The data in file itself contains comma with double qouted qualifier apart from the comma separator. Let me know how to do it. Appreciate any help if awk can be used to do it. Mentioned below is the sample record of...

8. Shell Programming and Scripting

If statement with pipeline

Hi Can anybody please explain me the following script in detail Value=`echo "if ( ${FACTOR} >= 1 ) {1}" | bc` What does "{1}" mean to here ?

9. Shell Programming and Scripting

Command pipeline trouble

Hello, I am attempting to ssh to a server and run a set of commands on a remote set of servers. I am getting the following error below, I am thinking quotes may be the problem. This command works on the local machine in bash. Not when I ssh to a remote server. Basically the command should...

LEARN ABOUT LINUX

bzgrep

BZGREP(1)						      General Commands Manual							 BZGREP(1)

NAME

       bzgrep, bzfgrep, bzegrep - search possibly bzip2 compressed files for a regular expression

SYNOPSIS

       bzgrep [ grep_options ] [ -e ] pattern filename...
       bzegrep [ egrep_options ] [ -e ] pattern filename...
       bzfgrep [ fgrep_options ] [ -e ] pattern filename...

DESCRIPTION

       Bzgrep  is  used to invoke the grep on bzip2-compressed files. All 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  bzgrep  is  invoked as bzegrep or bzfgrep then egrep or fgrep is used instead of grep.  If the GREP environment variable is set, bzgrep
       uses it as the grep program to be invoked. For example:

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

AUTHOR

       Charles Levert (charles@comm.polymtl.ca). Adapted to bzip2 by Philippe Troin <phil@fifi.org> for Debian GNU/Linux.

SEE ALSO

       grep(1), egrep(1), fgrep(1), bzdiff(1), bzmore(1), bzless(1), bzip2(1)

																	 BZGREP(1)