Sponsored Content
Top Forums Shell Programming and Scripting Need help with Korn Shell script for substring printing Post 302564318 by kraljic on Thursday 13th of October 2011 10:20:07 AM
Old 10-13-2011
Need help with Korn Shell script for substring printing

Hi all,
I am new to scripting.

I have a file with colon separated values called mylist.txt

Code:
cat mylist.txt
192.123.76.89:lmprod89
162.122.20.28:lmtstserver28
10.80.32.139:hewprod139

.
.


using our internal os utility (called mvsping) we need to check all these servers if they are reachable


Our field 1 is IP and field2 is servername. I need the output of the script's to show a message like

Server : $servername "with IP "$ipaddress"is pingable"

I know how to write the IF condition part here by checking the exit status. But i need some help in looping through each lines getting field1 and printing servername(which is field2) like above if the exit statu is 0


Using korn shell, i need to write this script . Will this require a loop inside a loop ?


Code:
for iplist in `cat mylist.txt | cut -d: -f1`
do
  if
  #i will do my logic using vsping in IF condition here
  #it will be something like
  # vsping ip . if exit status = 0 , then pingable
  
  
  
  
  fi

done

Moderator's Comments:
Mod Comment Video tutorial on how to use code tags in The UNIX and Linux Forums.

Last edited by vbe; 10-13-2011 at 12:29 PM..
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Substring in C shell script?

i am a new user of C-shell script. I want to know can i create a substring in a string. That means when i got a variable $input = "it is number 2" I want to get the "2" to be another variable. Can i do that in C-shell and how to ? Thank you so much dinodash (0 Replies)
Discussion started by: dinodash
0 Replies

2. Shell Programming and Scripting

Substring function in UNIX shell script

Hi All, Following is the output of a find commnd to locate log directories for various projects of UNIX AIX box: /home/hbinz6pf/projectlibs/dpr_pfsdw_dev/&PH& /opt/tools/ds/Template/&PH& /data/ds/ms/hmsdw/projectlibs/dpr_ms_dev/&PH& /data/ds/riskmi/projectlibs/dpr_riskmi_dev/&PH&... (1 Reply)
Discussion started by: csrazdan
1 Replies

3. UNIX for Dummies Questions & Answers

Substring function in UNIX shell script

Hi All, Following is the output of a find commnd to locate log directories for various projects of UNIX AIX box: /home/hbinz6pf/projectlibs/dpr_pfsdw_dev/&PH& /opt/tools/ds/Template/&PH& /data/ds/ms/hmsdw/projectlibs/dpr_ms_dev/&PH& /data/ds/riskmi/projectlibs/dpr_riskmi_dev/&PH&... (5 Replies)
Discussion started by: csrazdan
5 Replies

4. UNIX for Dummies Questions & Answers

problem extracting substring in korn shell

hi all, I have read similiar topics in this board, but i didn' t find the posting which is the same with the problem i face.. I try to extract string from the end. i try to do this: num=abcdefghij num2=${num:-5} echo $num2 #this should print the last 5 characters (fghij) but it doesn;t... (3 Replies)
Discussion started by: nashrul
3 Replies

5. UNIX for Dummies Questions & Answers

Substring in Shell Script

Hi I'm new to Shell scripting. Someone please help me in extracting a portion of string from a file. Eg: I got a file like, Readme.txt and has the following name value pairs input1 : /homes/input1/ input2 : /homes/input2/ ... ... When I give the parameter input1, the value... (3 Replies)
Discussion started by: smartbuddy
3 Replies

6. Shell Programming and Scripting

Substring in shell script

I need a help in getting substring of each line in input file. I am writing a script that will read a file from a directory on daily basis, I mean everyday a new file will be stored in this directory, it will replace old file. I have to read contents of this file, the contents will be as... (5 Replies)
Discussion started by: jyotib
5 Replies

7. Shell Programming and Scripting

using substring in shell script

This is the data I am having in a file Just for sample I have given 3 records. The file which I am having consists of n number of records. ABC123 10 01/02/2008 2008-01-03-00.00.00.000000 DYUU 22 02/03/2008 2008-01-04-00.00.00.000000 RF33 88 03/05/2008 2008-01-05-00.00.00.000000 ... (24 Replies)
Discussion started by: kmanivan82
24 Replies

8. UNIX for Dummies Questions & Answers

If statement for substring within string (korn)

Hi all, Just looking for a simple if statement that searches for a substring within a varaible, and then performs some function. Problem is that I need it to work in Korn shell $var = *string* does not work in Korn i="xxxxxx00.00yyyyy.zzzzz" want to find 00.00 (2 Replies)
Discussion started by: jgrosecl
2 Replies

9. Shell Programming and Scripting

Substring check in IF condition in shell script

I want to check if the string has the substring in IF condition then process... i tried below but not working if ]; then ............. field can be "reserved1" ....reservedn / fillspaces1 ... fillspacesn (4 Replies)
Discussion started by: greenworld123
4 Replies

10. Shell Programming and Scripting

Script Shell Extract substring

Hi all, Please, i'd like to extract string just before '.fr'. Here is some lines of my file: g-82.text.text1.fr.worker1 g-xx.yyyyyy.zzzz.fr.worker2 i'd like to extract this text: g-82.text.text1 g-xx.yyyyyy.zzzz Please, which command i have to use in my script shell ? ... (16 Replies)
Discussion started by: chercheur111
16 Replies
SCRIPT(1)                                                          User Commands                                                         SCRIPT(1)

NAME
script - make typescript of terminal session SYNOPSIS
script [options] [file] DESCRIPTION
script makes a typescript of everything displayed on your terminal. It is useful for students who need a hardcopy record of an interactive session as proof of an assignment, as the typescript file can be printed out later with lpr(1). If the argument file is given, script saves the dialogue in this file. If no filename is given, the dialogue is saved in the file type- script. OPTIONS
-a, --append Append the output to file or to typescript, retaining the prior contents. -c, --command command Run the command rather than an interactive shell. This makes it easy for a script to capture the output of a program that behaves differently when its stdout is not a tty. -e, --return Return the exit code of the child process. Uses the same format as bash termination on signal termination exit code is 128+n. -f, --flush Flush output after each write. This is nice for telecooperation: one person does `mkfifo foo; script -f foo', and another can supervise real-time what is being done using `cat foo'. --force Allow the default output destination, i.e. the typescript file, to be a hard or symbolic link. The command will follow a symbolic link. -q, --quiet Be quiet (do not write start and done messages to standard output). -t[file], --timing[=file] Output timing data to standard error, or to file when given. This data contains two fields, separated by a space. The first field indicates how much time elapsed since the previous output. The second field indicates how many characters were output this time. This information can be used to replay typescripts with realistic typing and output delays. -V, --version Display version information and exit. -h, --help Display help text and exit. NOTES
The script ends when the forked shell exits (a control-D for the Bourne shell (sh(1)), and exit, logout or control-d (if ignoreeof is not set) for the C-shell, csh(1)). Certain interactive commands, such as vi(1), create garbage in the typescript file. script works best with commands that do not manipulate the screen, the results are meant to emulate a hardcopy terminal. It is not recommended to run script in non-interactive shells. The inner shell of script is always interactive, and this could lead to unexpected results. If you use script in the shell initialization file, you have to avoid entering an infinite loop. You can use for example the .profile file, which is read by login shells only: if test -t 0 ; then script exit fi You should also avoid use of script in command pipes, as script can read more input than you would expect. ENVIRONMENT
The following environment variable is utilized by script: SHELL If the variable SHELL exists, the shell forked by script will be that shell. If SHELL is not set, the Bourne shell is assumed. (Most shells set this variable automatically). SEE ALSO
csh(1) (for the history mechanism), scriptreplay(1) HISTORY
The script command appeared in 3.0BSD. BUGS
script places everything in the log file, including linefeeds and backspaces. This is not what the naive user expects. script is primarily designed for interactive terminal sessions. When stdin is not a terminal (for example: echo foo | script), then the session can hang, because the interactive shell within the script session misses EOF and script has no clue when to close the session. See the NOTES section for more information. AVAILABILITY
The script command is part of the util-linux package and is available from Linux Kernel Archive <https://www.kernel.org/pub/linux/utils /util-linux/>. util-linux June 2014 SCRIPT(1)
All times are GMT -4. The time now is 01:28 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy