I'm writing a bash script to search the contents of a postfix log. To keep the script's output readable (since multiple lines from the log file need to be echo'ed) I am setting the IFS variable to an empty string so that the line breaks in my grep results are preserved. I am storing the results to a variable. Later in the script, I want to search the entire output as a single line of text. I am not sure if it is possible to make sed consider the results in this variable as a single line, so I am trying to simply remove all the line breaks using the following:
Code:
str1=${results//\n/}
However, it is not working. Does anyone have an idea what I'm doing wrong? The reason that I am trying to search the results as a single line is because I'm looping through all the lines in the search results, searching for a pattern that occurs multiple times. Each time a match is found, I do some further processing. However, if I just run the search results through sed, I get a list of every match. I'd like to be able to process each line separately if possible, but since I haven't been able to figure out how to do that I was trying to treat it as one long line and just parse through it from beginning to end.
If anyone has a better idea on how to do this, I'm open to suggestions. I'm intermediate when it comes to shell scripting, but by no means an expert like so much of you here.
hi all
i'm trying to get a script working upon connection with pppd
According to docu this happens ina clean environment with a couple of variables set, namely $1,$2,...
To be able to execute the statements i included a path statement but i think i'm running into trouble with the variables -... (6 Replies)
Hi,
can anyone help me with my scrip please. I wanted do following tasks:
1. List all the directory
2. A STDIN to ask user to enter a directory name from listed directories
3. command to check if the directory exists( or a command to validate if the user entered a valid directory name)... (3 Replies)
Use and complete the template provided. The entire template must be completed. If you don't, your post may be deleted!
1. The problem statement, all variables and given/known data:
i have to do this but i am confused,
Create a file containing the bash functions which perform the... (1 Reply)
Hey,
So I've run into a problem, due to my limited knowledge of Bash scripting.
Basically I've got a long script and I want to understand it before I even try and edit it. As long as I don't understand the script, I will not bother editing it.
Anyway, the following variable confuses me... (5 Replies)
Dear All,
I have a question that's been difficult to get an answer to.
I often write command line loops, e.g. find files, print name, grep for term, apply sed, etc
I use both zsh and bash.
When I write a loop e.g.
for line in `more myfile.txt`
> do
> echo $line
> done
but... (2 Replies)
have a script that calls child scripts depending on conditions. All of the child scripts source in a common file that contains shared functions.
At the moment each script has to source this file itself, is there a way for the master script to automagically source the file for them?
For... (3 Replies)
same script:
1- i am using grep to find a string called: tinker panic 0 in a file /etc/ntp.conf
if the string is not there, i want to add the strings in /etc/ntp.conf file in the first line of the file. if not do nothing or exit.
2- also i want to add # in front of the following lines in... (0 Replies)
Hello,
I am new to Linux and studying to become a Unix System Admin. I am taking a course in which I was practicing creating a bash script to ping a particular IP address. The script can be found below:
#/bin/bash
echo "Enter the IP address"
read ip
if
then
ping -c 1 $ip
if ;... (3 Replies)
Hello All,
I have a file of ip addresses called activeips.txt
What I'm trying to do is run a simple bash script that has a loop in it. The loop is a cat of the IP addresses in the file.
The goal is to run 2 nmap commands to give me outputs where each address in the list has an OS... (11 Replies)
Discussion started by: Dirk_Pitt
11 Replies
LEARN ABOUT NETBSD
script
SCRIPT(1) BSD General Commands Manual SCRIPT(1)NAME
script -- make typescript of terminal session
SYNOPSIS
script [-adfpqr] [-c command] [file]
DESCRIPTION
script makes a typescript of everything printed on your terminal. It is useful for students who need a hardcopy record of an interactive
session as proof of an assignment, as the typescript file can be printed out later with lpr(1).
If the argument file is given, script saves all dialogue in file. If no file name is given, the typescript is saved in the file typescript.
Option:
-a Append the output to file or typescript, retaining the prior contents.
-c command
Run the named command instead of the shell. Useful for capturing the output of a program that behaves differently when associated
with a tty.
-d When playing back a session with the -p flag, don't sleep between records when playing back a timestamped session.
-f Flush output after each write. This is useful for watching the script output in real time.
-p Play back a session recorded with the -r flag in real time.
-q Be quiet, and don't output started and ended lines.
-r Record a session with input, output, and timestamping.
The script ends when the forked shell exits (a control-D to exit the Bourne shell (sh(1)), and exit, logout or control-d (if ignoreeof is not
set) for the C-shell, csh(1)).
Certain interactive commands, such as vi(1), create garbage in the typescript file. script works best with commands that do not manipulate
the screen, the results are meant to emulate a hardcopy terminal.
ENVIRONMENT
The following environment variable is used by script:
SHELL If the variable SHELL exists, the shell forked by script will be that shell. If SHELL is not set, the Bourne shell is assumed. (Most
shells set this variable automatically).
SEE ALSO csh(1) (for the history mechanism).
HISTORY
The script command appeared in 3.0BSD.
BUGS
script places everything in the log file, including linefeeds and backspaces. This is not what the naive user expects.
BSD October 17, 2009 BSD
07-05-2007
