Sponsored Content
Top Forums Shell Programming and Scripting change list to comma seperated items Post 302138796 by insania on Wednesday 3rd of October 2007 12:58:59 PM
Old 10-03-2007
change list to comma seperated items

I have a list of servers in a file called serverlist like this

server1
server2
server3


i need to have them (with no trailing comma, the program does not like that)

server1,server2,server3

so far i have been using

HOSTS=/tmp/serverlist
HOSTS=${HOSTS:-$(grep -Ev "^#|^$" $HOSTS_LOCAL)}
HOSTS=$(echo $HOSTS |tr -s '\n ' ',,')
HOSTS=${HOSTS%,}


to achieve this. It works but is there a quicker easier way say like in one line. (I need the grep -Ev "^#|^$" because we have a lot and need to comment them out sometimes).

Sean
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Handling .CSV( Comma seperated value) in awk

Hi Guys, I am trying to reading in comma seperated values in awk. I can set the delimiter to be a comma, but the tricky part is that commas that appear within quotes are not to be considered as delimiters. Could someone please help. Regards, Laud (1 Reply)
Discussion started by: Laud12345
1 Replies

2. Shell Programming and Scripting

Comma Seperated List of Values

Hi, I have a comma seperated list of values: export list="red,blue,white,yellow" Given a value in a variable "look", i want to check whether the value is available in the above list. But the result should be based on exact string match and not part of the string. I am using following... (9 Replies)
Discussion started by: brap45
9 Replies

3. Shell Programming and Scripting

Removing blank lines from comma seperated and space seperated file.

Hi, I want to remove empty/blank lines from comma seperated and space seperated files Thanks all for help (11 Replies)
Discussion started by: pinnacle
11 Replies

4. Shell Programming and Scripting

perl help for comma seperated output

Hi, how can i make a comma seperated output summary. i attached the sample log file. I have to capture these data in the log file. Arcotid Time Stamp, Username, Success, Failure, Error Code, Error Message In the log snippet the userID can be found in- Code Arcot Native Server:... (3 Replies)
Discussion started by: namishtiwari
3 Replies

5. Shell Programming and Scripting

Script to append a value seperated by comma

I have a file like below. How can I add a new value after moss separated by a comma. This adding script should work in such a way that each time i pass a value it should be added one after the other separated by commas. hru:122: hello:123:john,philip,mary,kp,moss hi:124: bye:125: Can... (7 Replies)
Discussion started by: Tuxidow
7 Replies

6. Shell Programming and Scripting

Passing Comma seperated arguments

Hi How to takes coma seperated arguments and and parsing each argument to varaiable that has used further in the script. (1 Reply)
Discussion started by: Reddy482
1 Replies

7. Shell Programming and Scripting

Convert comma seperated file to line seperated.

Hi, I have data like this. 1,2,3,4 Output required: 1 2 3 4 I am trying to use tr function but getting error. Help is appreciated. (6 Replies)
Discussion started by: pinnacle
6 Replies

8. Shell Programming and Scripting

Need Help in rearranging the content of a file comma seperated

I have a file with the below content a = test1 b = test2 a = test3 b= test4 c = test6 b = test5 d = test7 d = test9 Need the output to be as follows a = test1,test3 b = test2, test5 c = test6 d = test7, test9 (4 Replies)
Discussion started by: iron_michael86
4 Replies

9. Shell Programming and Scripting

awk comma seperated value within double quote

Hi, I have a data file separated by comma, data enclosed by "" head file.txt "HD","Sep 13 2016 1:05AM","0001" "DT","273093045","192534" "DT","273097637","192534" .. I want to get the 3rd column value (0001) to be assigned to my variable I tried FILE_VER=`cat file.txt | awk... (2 Replies)
Discussion started by: Prasannag87
2 Replies

10. Shell Programming and Scripting

Read a lis, find items in a file from the list, change each item

Hello, I have some tab delimited text data, file: final_temp1 aname val NAME;r'(1,) 3.28584 r'(2,)<tab> NAME;r'(3,) 6.13003 NAME;r'(4,) 4.18037 r'(5,)<tab> You can see that the data is incomplete in some cases. There is a trailing tab after the first column for each incomplete row. I... (2 Replies)
Discussion started by: LMHmedchem
2 Replies
HOSTS(5)							File Formats Manual							  HOSTS(5)

NAME
hosts - host name data base DESCRIPTION
The hosts file contains information regarding the known hosts on the network. For each host a single line should be present with the fol- lowing information: official host name Internet address aliases Items are separated by any number of blanks and/or tab characters. A ``#'' indicates the beginning of a comment; characters up to the end of the line are not interpreted by routines which search the file. When using the name server named(8), this file provides a backup when the name server is not running. For the name server, it is suggested that only a few addresses be included in this file. These include address for the local interfaces that ifconfig(8C) needs at boot time and a few machines on the local network. This file may be created from the official host data base maintained at the Network Information Control Center (NIC), though local changes may be required to bring it up to date regarding unofficial aliases and/or unknown hosts. As the data base maintained at NIC is incom- plete, use of the name server is recommend for sites on the DARPA Internet. Network addresses are specified in the conventional ``.'' notation using the inet_addr() routine from the Internet address manipulation library, inet(3N). Host names may contain any printable character other than a field delimiter, newline, or comment character. FILES
/etc/hosts SEE ALSO
gethostbyname(3N), ifconfig(8C), named(8) Name Server Operations Guide for BIND 4.2 Berkeley Distribution May 14, 1986 HOSTS(5)
All times are GMT -4. The time now is 07:38 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy