I am using egrep to extract numbers from a file and storing them as variables in a script. But I am not able to do any arithmetic operations on the variables using "expr" because it stores them as char and not integers. Here is my code and the error I get. Any help will be appreciated.
#!/bin/sh... (3 Replies)
Hi, I would like ask for you help for coding array operation.
array= ( a b c d e f )
I would like to remove entry "d" from my array and import the remaining entries back to the array.
Thanks. (3 Replies)
Hi,
Can anyone explain me what is the functionality of this code
cat << EOF > $TSTFILE
/$1/ { print "SENT" }
EOF
Suggestions welcome
Thanks in advance (0 Replies)
Gurus - Please help with this urgent situation.
I have the following problem to solve using a shell script:
1. There are about 13 files named CONTAINER_1.lst, CONTAINER_2.lst, CONTAINER_3.lst .....CONTAINER_13.lst
2. Each of these files contain about 8 lines (in most cases) containing... (1 Reply)
Hi I am new to shell scripting and trying to get values from a text file,
I have a text file with values seperated with "|". like
aga|120220090525|120220090525|120220090525|120220090530
bab|120220090530|120220090530|120220090535|120220090535|120220090535... (4 Replies)
I have a txt file with several columns and i want to peform an operation on two columns and output it to a new txt file .
file.txt
900.00000 1 1 1
500.00000
500.00000
100000.000
4
4
1.45257346E-07 899.10834 ... (4 Replies)
I have always struggled when parsing a file vertically vs. by line horizontally. Can't seem to get my head around the concept. Here again I need to convert vertical output to horizontal output.
original output
root@acuransx:bpplsched 2000-STAND3 -v -M acuransx -l
<2>bpplsched: INITIATING:... (4 Replies)
I need to read a file line by line, then depending on the contents of each line, type in a code that will get written to an array.
The problem I have is when I ask the user to confirm the input code, if it is wrong, how do i Return to ask again?
Any thing I try increments the file to the next... (6 Replies)
Discussion started by: kcpoole
6 Replies
LEARN ABOUT DEBIAN
asp
ASP(1) User Manual ASP(1)NAME
asp - find an host IP address by its name
SYNOPSIS
asp [-uv] [-f | [-d dir] [-e ext]] [-a addresses] [-r repetitions] [-s send_delay] [-w wait_time] [-p port] hostname
asp -V
DESCRIPTION
Asp finds the IP address of an Internet connected host. In order to find it, the peer hostname (not the FQDN), and the range of its possi-
ble IP addresses need to be specified. Those IP addresses could be simple IP addresses as 127.0.0.1 or "metaip" addresses as 127.0.0.1-20
or 127.0.0.*: the former is a simple way to avoid to type a lot of consecutive addresses, the latter is short for 127.0.0.1-254.
In order to simplify the management of the associations between hostnames and addresses, asp searches in a specified directory a text file
containing the possible IP addresses of the looked for host. The name of the text file has to be formed by the hostname followed by an
optional extension of your choice.
For example to find the author's dynamic IP address, obviously if I am on line, you can provide my metaip address on standard input with
the command:
echo "195.31.186.1-62
194.166.58.2-18" | asp -f atomic
or you can put my metaip address in a file called atomic in your ~/.asp directory, like this:
echo "195.31.186.1-62
194.166.58.2-18" > ~/.asp/atomic
and then you can simply do:
asp atomic
OPTIONS -u Update the file /etc/hosts with the IP address of hostname or delete the possible old entry if the address is not found. Obviously
the file have to by writable by the user.
-v Include more verbiage to make output readable by humans. Default consists only of dotted quad IP address, which is intended for
output substitution in scripts.
-f Force the reading of addresses from standard input instead that from the hostname's file.
-d dir
Set the directory containing the addresses file referred by hostname to dir. Default is ~/.asp.
-e ext
Set addresses files extension to ext. Default is no extension.
-a addresses
Set the number of queries to send before make a pause of send_delay seconds. Default is 12 queries.
-r repetitions
Set the number of times to try the same address. Default is 3 times.
-s send_delay
Delay the sending of the next group of addresses send_delay seconds. Default is 2 seconds.
-w wait_time
Wait the peer reply for wait_time seconds. Default is 5 seconds.
-p port
Specify an alternative port number. For default the port number is obtained searching the asp entry in /etc/services.
-V Show version information.
ENVIRONMENT
ASPCMD This variable could be used to store your preferred settings. An option set in this environment variable could be overridden or tog-
gled from command line.
BUGS
UDP is an unreliable protocol, therefore there is a chance you will not find the host even if it is on line. Anyway, if you are sure that
the peer is on line and asp aware, you could adjust the various parameters until you get a reply. At last you will find the correct set-
tings for your particular needs. This until the RDM communication style will be implemented under Linux.
Obviously the hostname has to be unique among the possible IP addresses: asp will hook to the first correct reply.
AUTHOR
Stenio Brunetta <stenio@brunettaeperin.it>
Comments and suggestions are welcome.
ACKNOWLEDGMENTS
Steven N. Hirsch <shirsch@ibm.net> for v1.3 bug fix and for the verbose option.
Colin Phipps <cphipps@doomworld.com> for the tmpnam security issue.
SEE ALSO aspd(8).
Linux February 1997 ASP(1)