Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: Regarding a query on making changes to a running script
Top Forums Shell Programming and Scripting Regarding a query on making changes to a running script Post 302943461 by Don Cragun on Friday 8th of May 2015 02:52:07 PM
Old 05-08-2015
The definition of a long script in this context is a file that contains more bytes than the shell reads in a single read() system call when reading your script. That number can vary from shell to shell (where an update to a given shell counts as another shell) and may vary with the block size of the filesystem from which the script is being read. For most shells I've seen it is somewhere between 512 bytes and 20kb (but I haven't looked at any shell source for several years).
This User Gave Thanks to Don Cragun For This Post:
sea
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

error ORA-06512 while running query in script

1 #!/bin/ksh 2 ################################################################ 3 # Written by Johnson 12/03/2008 4 # Version 1.0 5 # This script executes some SQL to provide Spike Check Report to TNS team. 6 ... (3 Replies)
Discussion started by: shivanete
3 Replies

2. Shell Programming and Scripting

Running script from script query

Hi I have a question Suppose i have three scripts & i have created a top level script to run these. eg. leaf1.csh leaf2.csh leaf3.csh top.csh Now in top.csh i have written #!/bin/csh leaf1.csh leaf2.csh leaf3.csh Now my question is when i run this top level script when it... (1 Reply)
Discussion started by: sarbjit
1 Replies

3. Shell Programming and Scripting

Query Oracle tables and return values to shell script that calls the query

Hi, I have a requirement as below which needs to be done viz UNIX shell script (1) I have to connect to an Oracle database (2) Exexute "SELECT field_status from table 1" query on one of the tables. (3) Based on the result that I get from point (2), I have to update another table in the... (6 Replies)
Discussion started by: balaeswari
6 Replies

4. AIX

Query on running script with nohup

Hi, I'm trying to run database restore script with the nohup command as it will run for long hours since if I run it normally, the putty session will become inactive and the restore gets terminated. The command I use is nohup db2 -tvf FBR_NODE0000.scr -z FBR_NODE0000.log & But the problem is... (2 Replies)
Discussion started by: vkcool.17
2 Replies

5. Shell Programming and Scripting

Query on decision making...

is_number() { echo $1|egrep '^*$' 2>&1 1>/dev/null return $? }why the following snippet always give an output as "no" and never "yes" whatever the parameter I give to function is_number? if ]; then echo yes; else echo no; fi In addition, the function is_number() is... (5 Replies)
Discussion started by: biglau
5 Replies

6. Shell Programming and Scripting

Making use of multiple cores for running sed and awk scripts

Hi All, After reading that the sort command in Linux can be made to use many processor cores just by using a simple script which I found on the internet, I was wondering if I can use similar techniques for programs like the awk and sed? #!/bin/bash # Usage: psort filename <chunksize>... (7 Replies)
Discussion started by: shoaibjameel123
7 Replies

7. Shell Programming and Scripting

Running sed from a script query

Hello! I'm trying to run this code to print the body of an html document (all text in between <body> and </body>) from a script but am unsure how to call it from the command line interface. /<body>/,/<\/body>/ 1s/.*<body>// $s/<\/body>.*//p I have tried to call it using this: sed... (6 Replies)
Discussion started by: bgnersoon2be#1
6 Replies

8. Shell Programming and Scripting

Error in running DB query by script

Hi I was trying to fetch data from database. But the number of rows exported were huge so i got the error. Experts please advice. Thanks a lot for your supprt. #: ./script.sh ./script.sh: xmalloc: subst.c:3076: cannot allocate 1401346369 bytes (0 bytes allocated) (2 Replies)
Discussion started by: brij123
2 Replies

9. UNIX for Dummies Questions & Answers

Extract only the data from ksh script running netezza query

Hi I searched this forum before posting the question, but couldnt find it, the issue i'm facing is, i'm trying to select a column from a netezza table from a korn shell script, but the query runs var=$(nzodbcsql -q "select MAX(millcount) from table1";) echo $var it returns the value like... (10 Replies)
Discussion started by: maximus_jack
10 Replies

10. Shell Programming and Scripting

Making sure only one instance of a script is running

so i have a script that takes a while to complete and its cpu intensive. this script is being used by several users. i want to make sure only 1 user can run this script at any given time. i originally thought of running a while loop to egrep the process table of the PID ($$) of the process,... (7 Replies)
Discussion started by: SkySmart
7 Replies

LEARN ABOUT LINUX

chsh

CHSH(1) 							   User Commands							   CHSH(1)

NAME

       chsh - change login shell

SYNOPSIS

       chsh [options] [LOGIN]

DESCRIPTION

       The chsh command changes the user login shell. This determines the name of the user's initial login command. A normal user may only change
       the login shell for her own account; the superuser may change the login shell for any account.

OPTIONS

       The options which apply to the chsh command are:

       -h, --help
	   Display help message and exit.

       -s, --shell SHELL
	   The name of the user's new login shell. Setting this field to blank causes the system to select the default login shell.

       If the -s option is not selected, chsh operates in an interactive fashion, prompting the user with the current login shell. Enter the new
       value to change the shell, or leave the line blank to use the current one. The current shell is displayed between a pair of [ ] marks.

NOTE

       The only restriction placed on the login shell is that the command name must be listed in /etc/shells, unless the invoker is the superuser,
       and then any value may be added. An account with a restricted login shell may not change her login shell. For this reason, placing /bin/rsh
       in /etc/shells is discouraged since accidentally changing to a restricted shell would prevent the user from ever changing her login shell
       back to its original value.

FILES

       /etc/passwd
	   User account information.

       /etc/shells
	   List of valid login shells.

       /etc/login.defs
	   Shadow password suite configuration.

SEE ALSO

       chfn(1), login.defs(5), passwd(5).

User Commands							    06/24/2011								   CHSH(1)
All times are GMT -4. The time now is 02:18 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy