Hi,
My problem is :
echo Division
read vDivision
variable1=`cut -c **something****'
echo Do you want to proceed ?
read ans
I cant seem to read in ans on the first try and have to repeatedly enter the return key. If i remove the ` ` statement its ok but i need that line for... (1 Reply)
Hi,
My problem is :
echo Division
read vDivision
variable1=`cut -c **something****'
echo Do you want to proceed ?
read ans
I cant seem to read in ans on the first try and have to repeatedly enter the return key. If i remove the ` ` statement its ok but i need that line for... (1 Reply)
I'll be reading user name and password from the person while running a shell
script so that he is authenticated.
The challenge here is to read the password variable without displaying on screen. Is there a way?
I presently do it displaying it on the screen as
echo " please enter your... (9 Replies)
Can I use the read command to read the contents of a variable? I'm trying by using the following code and getting nothing back. I'm in a Linux environment.
#!/bin/ksh
IFS=~
VAR1=1~2~3~4
echo $VAR1 | read a b c d
print "$a $b $c $d" (9 Replies)
Hello,
I have a ini-file containing comma-separated e-mail addresses, an bash-script sending a mail. Mail-addresses and the mail-script are separated, so I need not to change the important mail script.
But how can I read out the file into a variable? It is possible to handover the mail... (7 Replies)
Hi,
i have one file which has list of data like this
xemp 42
yeet 87
wax 223
dyne 442
i want to read each of in for loop from the script
can you give me syntax
Use code tags, ty. (2 Replies)
Hi,
i want to create an user-friendly script where you are asked for two numbers. i would like that these two number to be separated with "--" for example, but i can't figure out how to do this.
for example
read -p "Insert lowest and highest value: " min ; echo -n "-- "; read max
so... (3 Replies)
Allright so a quick question.
I'm building a script that will eventually do a full IP subnet scan.
It starts off by first entering an IP address, (capturing host and net ID comes after that) and I want it to use the current IP address if no input is given.
Is there a quick way to define the... (1 Reply)
Hi all,
I used to set variable by read from keyboard
read -p 'Input new value for variable :' var
Now I want to pipe from ls and set to var
a.txt b.txt c.txt
ls | grep a.txt | read var
why this cannot set the $var.
What is the different between them....:wall: (4 Replies)
Hi All,
How I can read on variable with cycle for in bash script e.g.#!/bin/bash
VAR1=`command1 sentence list`
for i in $(cat $VAR1);
do
VAR2=`command2 $i`
echo $VAR2
doneSo read VAR1 execute command over this and load in VAR2 then print VAR2,
Thanks you,
Please wrap... (1 Reply)
Discussion started by: aav1307
1 Replies
LEARN ABOUT DEBIAN
plan9-join
JOIN(1) General Commands Manual JOIN(1)NAME
join - relational database operator
SYNOPSIS
join [ options ] file1 file2
DESCRIPTION
Join forms, on the standard output, a join of the two relations specified by the lines of file1 and file2. If one of the file names is the
standard input is used.
File1 and file2 must be sorted in increasing ASCII collating sequence on the fields on which they are to be joined, normally the first in
each line.
There is one line in the output for each pair of lines in file1 and file2 that have identical join fields. The output line normally con-
sists of the common field, then the rest of the line from file1, then the rest of the line from file2.
Input fields are normally separated spaces or tabs; output fields by space. In this case, multiple separators count as one, and leading
separators are discarded.
The following options are recognized, with POSIX syntax.
-a n In addition to the normal output, produce a line for each unpairable line in file n, where n is 1 or 2.
-v n Like -a, omitting output for paired lines.
-e s Replace empty output fields by string s.
-1 m
-2 m Join on the mth field of file1 or file2.
-jn m Archaic equivalent for -n m.
-ofields
Each output line comprises the designated fields. The comma-separated field designators are either 0, meaning the join field, or
have the form n.m, where n is a file number and m is a field number. Archaic usage allows separate arguments for field designators.
-tc Use character c as the only separator (tab character) on input and output. Every appearance of c in a line is significant.
EXAMPLES
sort /etc/passwd | join -t: -1 1 -a 1 -e "" - bdays
Add birthdays to the /etc/passwd file, leaving unknown birthdays empty. The layout of /adm/users is given in passwd(5); bdays con-
tains sorted lines like
tr : ' ' </etc/passwd | sort -k 3 3 >temp
join -1 3 -2 3 -o 1.1,2.1 temp temp | awk '$1 < $2'
Print all pairs of users with identical userids.
SOURCE
/src/cmd/join.c
SEE ALSO sort(1), comm(1), awk(1)BUGS
With default field separation, the collating sequence is that of sort -b -ky,y; with -t, the sequence is that of sort -tx -ky,y.
One of the files must be randomly accessible.
JOIN(1)