Checking Presence Of A File Identified/ Addressed By A Variable

I have two files which has exact same number of lines.
I want first line of first file should be filename of new file and content of this new file should be first line of second file.
Then second line of first file should be filename of again new file and content of this new file should be second line of second file.
then third line of first file should be filename of again new file and content of this new file should be third line of second file.
and so on...
I am trying to do it using for loop but I am not able to create two for loops.
This is what I have done
Code:

IFS=$'\n'
var=$(sed 's/\"http\(.*\)\/\(.*\).wav\"\,\".*/\2/g' 1797.csv) # filenames of all files
var2=$(sed 's/\"http\(.*\)\/\(.*\).wav\"\,\"\(.*\)\"$/\3/g' 1797.csv) # contents of all files
for j in $var;
do
#Here I do not know how to use $var2
done

Please help.

Ok yes this is a homework assignment BUT I am NOT looking to have the answers given to me. I am in the 6th week of my first Linux class ever and we are in our few weeks of beginning scripting. I have some ideas of what to do or where to start but not many and no one to bounce any ideas off...we are using UNIX Bash shell so any others I have no clue. The scenario is that I need a script that searches all my users home directories for bad words. I need the script to report to the screen certain info like username and word found and path. It should ask a user if it is good or bad and if bad be put into a file of list of bad file names, if good remove from list and no longer flagged by the script. What I have so far is wanting to somehow do a loop. I do know that if I do a grep -r -e kill -e steal /home/* I get a list of what I need. I also know that the list is separated by delimiters which I can pipe to get a variable for the things I need. I also know that I can put it to a file with a > filename.txt

What I have no clue is how to start a loop that would do this...

for each line in filename.txt
UNAME=...
LOC=...
TXT=...
echo "Username: $UNAME, Line with bad word found: $TXT, and Path and file name: $LOC. Is this a BAD file? (Y)"
Read YORN

if ["$YORN" = "Y" ]; then
>> (line of text from grep) badfiles.txt
fi

Next or whatever goes there...sorry if this is crazy I just really need some direction. I am trying to learn so please don't give me the answer...that will do nothing for me and I will not be able to explain the code I came up with.

Hi all ,
I have a requirement where I have a file. Contents of the file are :
#comments
VAR="abg"
RES=123
#comments
IC6790ABG="https://www.abc.com"
IC5678-vg="https://www.bhy.com"
IC-gy_567:78="https://www.gyt.com"
#comments
The variable names can not have characters like - , : so
in this file I have to find words starting with IC and replace characters like - ,:
I want to change only the variable name , not the whole line.
I have used SED command

sed -i '/^IC/s/[^0-9 a-z A-Z _]*//g' file

when I am using this command , it is replacing the whole line
output becomes :

#comments
VAR="abg"
RES=123
#comments
IC6790ABGhttpswwwabccom
IC5678vghttpswwwbhycom
ICgy56778httpswwwgytcom
#comments


But I want the output like this :

#comments
VAR="abg"
RES=123
#comments
IC6790ABG="https://www.abc.com"
IC5678vg="https://www.bhy.com"
ICgy_56778="https://www.gyt.com"
#comments

How can I get the desired output , thanks for your help in advance .

i am getting the folowing error while running the tcl script:-
can't read "source1": no such variable
while executing
"set source1"
(file "gray.tcl" line 109)
abhishek@ubuntu:~/Ns2$ ns gray.tcl
num_nodes is set 9
INITIALIZE THE LIST xListHead
can't read "source=1": no such variable
while executing
"set source=1"
(file "gray.tcl" line 109)

Helllo,
I defined the variable like this : set interval [lindex $argv 1].
When i execute my code, i got this error :



can't read "interval": no such variable
while executing
"$cbr_ set interval_ $interval"
(file "te.tcl" line 597)



How can i read this variable



Plz replyyy

Hi!
I wrote a script shell about changing IP of the httpd.conf from text file and saving a new httpd.conf file for all IPs in the text file. The code is below, Im using mremote on windows (RHEL Release 5.7), and getting this error:
./script1.sh: line 19: syntax error: unexpected end of file

Please help me about that error. Thanks!

(ps: line 19 is the last line in the code => done < "$filename" )

#!/bin/bash

DATE='date +%Y%m%d_%H:%M:%S'
NAME=httpd_ip_change
EXTENSION=conf
max=10

filename="$1"
while read -r line

for ((i=2; i<=$max; ++i ))

do
touch $NAME$i.$EXTENSION.$DATE

sed "s/<VirtualHost 10.11.92.81:80>/$line/g" ./httpd.conf > $NAME$i.$EXTENSION.$DATE

done < "$filename"

I am trying to process some .csv files with Linux as follows:

Some fields have data with newline characters embedded, like so:

"Bob Smith
531 Pennsylvania Avenue
Washington, DC"

(I verified the existence of the " via Wordpad. The file is too large to easily edit in Wordpad to get all the data for each row on a single line).

what linux command would I use on the files to get the data in each cell on one line?

I have tried:

1. awk -v RS="" '{gsub (/\n/,"")}1' file > newfile

but the cell data was still being read in as if "531 Pennsylvania Avenue" was a brand new row in the CSV file.

2. Command 1 followed by awk -v RS="" '{gsub (/\r/,"")}1' newfile > finalFile

but that resulted in all of the data in the file being put onto a single line.

3. awk -v RS="" '{gsub (/\r\n/,"")}1' file > newFile

But that result was the same as attempt number 2.

How can I preprocess the file so that:

"Bob Smith
531 Pennsylvania Avenue
Washington, DC"

is read as a single field on a single line as part of the row it should be associated with, like

"Bob Smith 531 Pennsylvania Avenue Washington, DC"

I know that '>' and '>>' will redirect output to a file

However, how does one keep this output on the same line as the previous line?

'echo -n' will stop a trailing new line but for terminal redirection?

Hello everyone,


Although it seems easy, I've been stuck with this problem for a moment now and I can't figure out a way to get it done.

My problem is the following:

I have a file where each line is a sequence of IP addresses, example :

Line 1: 10.0.01 10.0.0.2
Line 2 : 10.0.0.5 10.0.0.1 10.0.0.2
...

What I'd like to do, is to remove lines that are completely matched in other lines. In the previous example, "Line 1" would be deleted as it is contained in "Line 2".

So far, I've worked with python and set() objects to get the job done but I've got more than 100K lines and sets lookups are becoming time consuming as the program goes :/

Thanks for you help

I have a log file with a header (which I can skip with awk), and a footer, which I need to find a way to remove. The goal is to extract the middle lines from a file. Specifically, there is a header (1 line) and a footer (1 line).
The only way I can figure out how to do this is if I already know how many lines are in the file to begin with. For example, if the file looks like this: line 1 (header)
line 2 (interesting line)
line 3 (interesting line)
line 4 (footer)
I just want to extract the middle "interesting lines" without the header/footer lines.
I can't use grep to remove the header/footer, because I don't know what those lines will contain, only that they exist and are exactly 1 line each. In general, I don't know how many lines are in the file.