hey, i'm trying to write a shell script which accepts:
operand operator operand
then, the script would see which operator it is (using case) and calculate it...
but i dont know how to do it correctly with $1 $2 $3... (eliminating accepting separate inputs) (1 Reply)
I'm reading from a file that is semi-colon delimited. One of the fields contains 2 spaces separating the first and last name (4th field in - "JOHN<space><space> DOE"):
e.g. TORONTO;ONTARIO;1 YONGE STREET;JOHN DOE;CANADA
When I read this record and either echo/print to screen or write to... (4 Replies)
This reads single keystrokes and produces an output:
#! /bin/bash
while : ; do
read -s -n 1 >/dev/null 2>&1
echo ${REPLY}
done | awk '{print}'
This second one don't. Even though these examples make no sense; the real code is more complicated. Who knows what the problem is... (2 Replies)
Hi all,
My search karate must be weak because I'm about certain something very like this has been asked and answered here many times. I'll give you the exact scenario I've wasted a few hours of my Saturday on: :wall:
I'm trying to read through a very large number (~200) of router and... (28 Replies)
Can we input two variable on single line that separate by space example user input "list jpg" it will list all jpg files in current directory (3 Replies)
Hi Guys,
I need to append some data to a new file, but i need to make sure that when i use to >> command again.I dont go to the new line. i append the data on the same line.
Please help regarding the same.
Thanks in advance..!!! (3 Replies)
Hi
I am new to writing script and want to use a Bash Piped while-read and read from user input.
if something happens on server.log then do while loop or if something happend on user input then do while loop.
Pseudocode something like:
tail -n 3 -f server.log | while read serverline || read... (8 Replies)
Dear Friends,
I am looking for a shell script to merge input files into one file .. here is my idea:
1st paramter would be outfile file (all input files content)
read all input files and merge them to input param 1
ex: if I pass 6 file names to the script then 1st file name as output file... (4 Replies)
Example input:
John:Shepherd:770-767-4040:U.S.A:New York
Mo Jo:Jo Jo: 666-666-6666:U.S.A:Townsville
Expected Output:
First Name: John
Last Name: Shepherd
Phone Number: 770-767-4040
Country: U.S.A
State: New York
First Name: Mo Jo
Last Name: Jo Jo
Phone Number: 666-666-6666... (10 Replies)
Hi,
I am working on a script, which requests users to enter input.
Ex: read -p "Please enter your email id:" email
I don't want users skipping this entry, this has to be mandatory.I dont want to proceed without input.
I can do a check if variable $email is empty and proceed if not.But, i... (7 Replies)
Discussion started by: aravindadla
7 Replies
LEARN ABOUT DEBIAN
combine
COMBINE(1)COMBINE(1)NAME
combine - combine sets of lines from two files using boolean operations
SYNOPSIS
combine file1 and file2
combine file1 not file2
combine file1 or file2
combine file1 xor file2
_ file1 and file2 _
_ file1 not file2 _
_ file1 or file2 _
_ file1 xor file2 _
DESCRIPTION
combine combines the lines in two files. Depending on the boolean operation specified, the contents will be combined in different ways:
and Outputs lines that are in file1 if they are also present in file2.
not Outputs lines that are in file1 but not in file2.
or Outputs lines that are in file1 or file2.
xor Outputs lines that are in either file1 or file2, but not in both files.
"-" can be specified for either file to read stdin for that file.
The input files need not be sorted, and the lines are output in the order they occur in file1 (followed by the order they occur in file2
for the two "or" operations). Bear in mind that this means that the operations are not commutative; "a and b" will not necessarily be the
same as "b and a". To obtain commutative behavior sort and uniq the result.
Note that this program can be installed as "_" to allow for the syntactic sugar shown in the latter half of the synopsis (similar to the
test/[ command). It is not currently installed as "_" by default, but you can alias it to that if you like.
SEE ALSO join(1)AUTHOR
Copyright 2006 by Joey Hess <joey@kitenet.net>
Licensed under the GNU GPL.
moreutils 2012-04-09 COMBINE(1)
03-02-2015
