Config file auto-updation


Login or Register for Dates, Times and to Reply

 
Thread Tools Search this Thread
# 1  
HP Config file auto-updation

Hello All,

I need to update my .cfg file which is used in the script for almost all runs.

myfile.cfg file:
Code:
var=1
var1=1
run=0

script:
Code:
#! /bin/sh

. /mydir/myfile.cfg

echo $var"\t" $var1

exit

So, the requirement is that the myfile.cfg should update every time I run the script. say run=1 and in the next run run=2 and go on.

I was thinking to do with sed. But it would need a temporary file as my system doesn't support -i.
# 2  
Code:
$ cat myfile.cfg
var=1
var1=1
run=1

$ cat update.sh
num=`grep run= myfile.cfg | sed "s/run=//"`
num=`expr $num + 1`
sed "s/run=.*/run=$num/" myfile.cfg > temp.x
mv temp.x myfile.cfg

$ ./update.sh

$ cat myfile.cfg
var=1
var1=1
run=2

# 3  
@hanson: Thanks for the concern. But I was thinking to do this without a temporary file.

Space "really" matters on the server that I'm working on Smilie
# 4  
Code:
$ cat update.sh
num=`grep run= myfile.cfg | sed "s/run=//"`
num=`expr $num + 1`
buffer=`sed "s/run=.*/run=$num/" myfile.cfg`
echo "$buffer" > myfile.cfg

# 5  
@hanson: Coool... Smilie This works...
# 6  
Code:
awk -F'=' '/run=/ {$NF+=1}{R=(R==""?$0:R RS $0)}END{print R > "myfile.cfg"} ' OFS='=' myfile.cfg

# 7  
I would advise not to modify your script with every run; it just does not make sense. If you run your scripts in the same session, keep the run No. in a variable; if run across session, keep it in a file, or, e.g. a symbolic link.
Login or Register for Dates, Times and to Reply

Previous Thread | Next Thread
Thread Tools Search this Thread
Search this Thread:
Advanced Search

Test Your Knowledge in Computers #526
Difficulty: Medium
In the ASCII Character Table, the first and second column indicate the binary and decimal representation respectively.
True or False?

9 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

File updation on matching key

I have input file like Input.dat with below content RRD 0Z91YUn000000Lk 9000100001 103020151117 STMT151117155527001 0000 2 000000 000004 RRD 0Z91YUn00000ysj 9000100001 103020151117 STMT151117155527001 0000 3 000000 000003 RRD 0Z91YUn00001vGh 9000100002... (12 Replies)
Discussion started by: PRAMOD 96
12 Replies

2. UNIX for Dummies Questions & Answers

Check for updation/error/stuck of logs

Hi All, I'm a newbie in Linux Programming.:) Got some 500 processes running and I have around 20-30 logs updating for every 2mins on a server. The logs which i'm referring usually contains book name,run ids(not PID's),process name etc etc. I'm interested in finding out whether some particular... (1 Reply)
Discussion started by: Nand Kishor
1 Replies

3. Shell Programming and Scripting

Shell script that will compare two config files and produce 2 outputs 1)actual config file 2)report

Hi I am new to shell scripting. There is a requirement to write a shell script to meet follwing needs.Prompt reply shall be highly appreciated. script that will compare two config files and produce 2 outputs actual config file and a report indicating changes made. OS :Susi linux ver 10.3. ... (4 Replies)
Discussion started by: muraliinfy04
4 Replies

4. Shell Programming and Scripting

check files updation

Hi All, Can anyone help to write the script to check files updation? i have files as mentioned below. which will be updated some time. i just want to check the last file is updating the data for last 15 mins or not. if its not updating i want to print NOT OK. if its updating data i want... (1 Reply)
Discussion started by: steve2216
1 Replies

5. Shell Programming and Scripting

to check files updation in sys time

Dear All, Pls help me on this issue. i want to write a script to check whether files updation happening in cuttent time or not. i have set of files in directory which wil update in time basis.. Requirement: If the files are updating in system time i just want to print "files are... (6 Replies)
Discussion started by: steve2216
6 Replies

6. AIX

Problem with updation of 'quota'

Hi, We have recently implemented 'quota' concept for the unix users. softlimit - 230MB hardlimit - 250MB We have applied the quota when few of users are more than the hardlimit,issue is that even though the users cleared the space, still its 'quota' was not updating properly. For some... (0 Replies)
Discussion started by: girish_satyam
0 Replies

7. Shell Programming and Scripting

parsing config file to create new config files

Hi, I want to use a config file as the base file and parse over the values of country and city parameters in the config file and generate separate config files as explained below. I will be using the config file as mentioned below: (config.txt) country:a,b city:1,2 type:b1... (1 Reply)
Discussion started by: clazzic
1 Replies

8. Linux

gcc updation on Linux machine

Hi All, I already have gcc complier installed in my machine. Its version is : gcc version 3.2.2 20030222 (Red Hat Linux 3.2.2-5) I am not sure whethere it's is latest gcc version available. I want to update my gcc version. Can anyone please suggest me what is the latest and stable gcc... (1 Reply)
Discussion started by: bisla.yogender
1 Replies

9. Programming

Directory updation Notification?

Hi, I'm a UNIX newbie .. so forgive me if this question sounds dumb. :) Is it possible for Unix to notify a process that a particular directory has been updated? Rather that the process constantly polling the directory ... Awaiting your replies .. Thanks, VJ (6 Replies)
Discussion started by: vjsony
6 Replies

Featured Tech Videos