Sponsored Content
Top Forums Shell Programming and Scripting Is it possible in a shell script to modify itself ?? Post 67277 by sehgalniraj on Tuesday 22nd of March 2005 06:56:28 AM
Old 03-22-2005
Thanks Muthu for the reply...


I repeat my question :
Is it possible for a shell script to modify itself ??


In my shell script can i declare a variable (last_run_time) in the begining, Use this variable thru the code and before exiting the shell script update this variable with the current date

.... shell script start .....
last_run_time=16/03/2005 10:10:10
..
spool test
select * from table1 where creattion_date > $last_run_time;
spool off
..

****
Here i wanted to update the last_run_time variable (declared above) with the current date, so that the next time i run the script i shd get the records which are inserted after i last ran the query
****
.... shell script end .....

Regards
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

how to modify a file using shell script

Hi, i am using SuonOS and ksh. i need to add data into a file(s.txt) using a shell script. i have to pass 3 parameters and these 3 paramaters should add into the file at end of the file. File s.txt is look like, --------------------------------- column1|column2|column3 ... (1 Reply)
Discussion started by: syamkp
1 Replies

2. Shell Programming and Scripting

Help with a shell script to modify one line and copy the next 9 to same file

Hi everyone, the problem is quite simple, yet I can't find an easy solution using awk. I need to search for a string in $3, then if I find this string, copy the line,modify $3, and copy the next 9 lines to the same file. My problem is in the copying of the lines... Finding and modifying... (5 Replies)
Discussion started by: Teroc
5 Replies

3. Shell Programming and Scripting

Modify text file using shell script

Hi, I have a text file which is following format - COL VAL ABC 1 ABC 2 ABC 3 ABC 4 ABC 5 My requirement is to search for a particular value (provided by user) in the file and comment the previous entries including that as well. E.g. If I search for number 3, then the output... (6 Replies)
Discussion started by: bhupinder08
6 Replies

4. Shell Programming and Scripting

Shell script to modify file in several directories

Hi, I want a script shell to automate modifying httpd.conf file for several instances of apache, save httpd.file before changing it, after modifying it and then restart apache. - Replace ServerRoot "xxxx" by ServerRoot "yyyy" of all directories : "... (4 Replies)
Discussion started by: bras39
4 Replies

5. Shell Programming and Scripting

How to modify character to UTF-8 in shell script?

I have a shell script running to load some data from a text file to database. Text file contains some non-ASCII characters like ü. How can i convert these characters to UTF-8 codes before loading to DB. (5 Replies)
Discussion started by: vel4ever
5 Replies

6. Shell Programming and Scripting

Modify cal command in shell script

Plz help me To modify "cal " command to display calenders of the specified months. $ cal jan mar nov (0 Replies)
Discussion started by: shivasaini
0 Replies

7. Shell Programming and Scripting

Modify cal command in shell script

Plz help me To modify "cal " command to display calenders of the specified months. $ cal jan....oct (0 Replies)
Discussion started by: shivasaini
0 Replies

8. Shell Programming and Scripting

Modify cal command in shell script

Plz help me a) To display on the screen the sorted output of "who" along with the total no. of users. b) the same output (except the no. of users) should be in file FILE1. (2 Replies)
Discussion started by: shivasaini
2 Replies

9. Shell Programming and Scripting

Modify XML tag using shell script

Hi All Need some help with a unix shell script. I have a XML file as shown below: <Root> <Service> <endPoint type="SOAP" protocol="http"> <provider>ABCD</provider> <urlRewrite>/service/xyz/getAccountDetails</urlRewrite> <timeout>30</timeout> </endPoint> </Service> <Service> <endPoint... (3 Replies)
Discussion started by: abhilwa
3 Replies

10. UNIX for Dummies Questions & Answers

Modify Column Data using Shell Script

HI Guys, Input :- P081 wr1 12p0d5: 22.8 P081 wr1 12p2d18: 23.1 P149 wr1 1pxcud6/port_0_dev_7: 20.4 P149 wr1 1pxcud4/port_1_dev_10: 22.4 OutputP081 wr1 120 22.8 P081 wr1 122 23.1 P149 wr1 10 20.4 P149 wr1 11 22.4 In in First two line delete p and after d untill : In Last two line... (4 Replies)
Discussion started by: pareshkp
4 Replies
NPM-RUN-SCRIPT(1)														 NPM-RUN-SCRIPT(1)

NAME
npm-run-script - Run arbitrary package scripts SYNOPSIS
npm run-script <command> [--silent] [-- <args>...] alias: npm run DESCRIPTION
This runs an arbitrary command from a package's "scripts" object. If no "command" is provided, it will list the available scripts. run[-script] is used by the test, start, restart, and stop commands, but can be called directly, as well. When the scripts in the package are printed out, they're separated into lifecycle (test, start, restart) and directly-run scripts. As of ` https://blog.npmjs.org/post/98131109725/npm-2-0-0, you can use custom arguments when executing scripts. The special option -- is used by getopt https://goo.gl/KxMmtG to delimit the end of the options. npm will pass all the arguments after the -- directly to your script: npm run test -- --grep="pattern" The arguments will only be passed to the script specified after npm run and not to any pre or post script. The env script is a special built-in command that can be used to list environment variables that will be available to the script at run- time. If an "env" command is defined in your package, it will take precedence over the built-in. In addition to the shell's pre-existing PATH, npm run adds node_modules/.bin to the PATH provided to scripts. Any binaries provided by locally-installed dependencies can be used without the node_modules/.bin prefix. For example, if there is a devDependency on tap in your package, you should write: "scripts": {"test": "tap test/*.js"} instead of "scripts": {"test": "node_modules/.bin/tap test/*.js"} to run your tests. The actual shell your script is run within is platform dependent. By default, on Unix-like systems it is the /bin/sh command, on Windows it is the cmd.exe. The actual shell referred to by /bin/sh also depends on the system. As of ` https://github.com/npm/npm/releases/tag/v5.1.0 you can customize the shell with the script-shell configuration. Scripts are run from the root of the module, regardless of what your current working directory is when you call npm run. If you want your script to use different behavior based on what subdirectory you're in, you can use the INIT_CWD environment variable, which holds the full path you were in when you ran npm run. npm run sets the NODE environment variable to the node executable with which npm is executed. Also, if the --scripts-prepend-node-path is passed, the directory within which node resides is added to the PATH. If --scripts-prepend-node-path=auto is passed (which has been the default in npm v3), this is only performed when that node executable is not found in the PATH. If you try to run a script without having a node_modules directory and it fails, you will be given a warning to run npm install, just in case you've forgotten. You can use the --silent flag to prevent showing npm ERR! output on error. You can use the --if-present flag to avoid exiting with a non-zero exit code when the script is undefined. This lets you run potentially undefined scripts without breaking the execution chain. SEE ALSO
o npm help 7 scripts o npm help test o npm help start o npm help restart o npm help stop o npm help 7 config January 2019 NPM-RUN-SCRIPT(1)
All times are GMT -4. The time now is 05:02 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy