Sponsored Content
Top Forums Shell Programming and Scripting understanding the purpose of <If env | grep -q $EXAMPLE> Post 303041873 by croyleje on Thursday 5th of December 2019 02:39:36 PM
Old 12-05-2019
understanding the purpose of <If env | grep -q $EXAMPLE>

I have seen this code in a few places and my understanding is they are using it to determine what app called the script.

I have a script that is called by two different applications and what it to do one thing when called by one and something else when called by the other. How do I determine what app is calling the script? If my example is correct how would I determine the $EXAMPLE and is every running application assigned a variable name?

I thought about just writing a separate script but the script is caching some info from one app and then echoing out to the other app when it asks for it so I think it should stay as one script.

Any help or pointing me in the correct direction would be great.
Thank you,
Jason
 

10 More Discussions You Might Find Interesting

1. Programming

Understanding the purpose of dup/dup2

I'm having difficulty understanding the purposes of using dup/dup2 when involving forks. for example, if we call fork() once, that is, we are creating a child process. In what cases would we need to use dup or dup2 to duplicate the file descriptors for standard output and standard error? What... (1 Reply)
Discussion started by: Yifan_Guo
1 Replies

2. Shell Programming and Scripting

Adding command line env in cron env

Hello friends, i run two scripts manually & they work. i run them in cron & they don work. how to match the two env's 1.command line env 2.cron env i would like cron to use command line env. Thanks & Regards Abhijeet (1 Reply)
Discussion started by: abhijeetkul
1 Replies

3. UNIX for Dummies Questions & Answers

Explain the line "mn_code=`env|grep "..mn"|awk -F"=" '{print $2}'`"

Hi Friends, Can any of you explain me about the below line of code? mn_code=`env|grep "..mn"|awk -F"=" '{print $2}'` Im not able to understand, what exactly it is doing :confused: Any help would be useful for me. Lokesha (4 Replies)
Discussion started by: Lokesha
4 Replies

4. UNIX for Dummies Questions & Answers

Purpose of /etc/cron.d

What is the purpose of /etc/cron.d? (3 Replies)
Discussion started by: proactiveaditya
3 Replies

5. UNIX for Advanced & Expert Users

Purpose of inv

Hi All Can anybody tell me what is the purpose of inv in the below command. ftp -inv $RFTPSERVER /temp/te.txt << EOF and << its stands for what.. Thanks (1 Reply)
Discussion started by: raju4u
1 Replies

6. Web Development

Deny from env=env-variable Does not work

(Above from Apache docs). On my system, using: SetEnvIf User-Agent Mozilla IsBad=1 Order allow,deny Allow from all Deny from env=IsBad ...I see that environment variable is set (using phpinfo()) but the page is still served. No errors in the Apache logs. (1 Reply)
Discussion started by: gnurob
1 Replies

7. Shell Programming and Scripting

Understanding pattern matching used in a grep command

I have the following code. I want to remove the --sort=num/num/... and am using grep to exclude it as shown below: I have a bit of problem figuring out the use of - at the front echo "--sort=4/5/6" | grep -ivE '-((sort|group)=+/+(/+)*)$' Now suppose I want to remove --quiet I can... (7 Replies)
Discussion started by: kristinu
7 Replies

8. UNIX for Dummies Questions & Answers

Purpose of <>

Hi, I have read from the book that , <> causes the file to be used as both input as well as output. Can anyone give me the scenario where <> will be useful? Thanks (10 Replies)
Discussion started by: pandeesh
10 Replies

9. Shell Programming and Scripting

help understanding regex with grep & sed

I have the following line of code that works wonders. I just don't completely understand it as I am just starting to learn regex. Can you help me understand exactly what is happening here? find . -type f | grep -v '^\.$' | sed 's!\.\/!!' (4 Replies)
Discussion started by: trogdortheburni
4 Replies

10. Shell Programming and Scripting

Further understanding the Grep! lol

If I use the grep command for parsing files, does it stop parsing right after it finds the matching pattern or does it continue to parse that document? grep -l "status" *.xml (5 Replies)
Discussion started by: emc^24sho
5 Replies
script(1)							   User Commands							 script(1)

NAME
script - make record of a terminal session SYNOPSIS
script [-a] [filename] DESCRIPTION
The script utility makes a record of everything printed on your screen. The record is written to filename. If no file name is given, the record is saved in the file typescript. See WARNINGS. The script command forks and creates a sub-shell, according to the value of $SHELL, and records the text from this session. The script ends when the forked shell exits or when Control-d is typed. OPTIONS
The following option is supported: -a Appends the session record to filename, rather than overwriting it. NOTES
script places everything that appears on the screen in filename, including prompts. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWcsu | +-----------------------------+-----------------------------+ |CSI |Enabled | +-----------------------------+-----------------------------+ SEE ALSO
attributes(5) WARNINGS
script can pose a security risk when used in directories that are writable by other users (for example, /tmp), especially when run by a privileged user, that is, root. Be sure that typescript is not a link before running script. SunOS 5.10 30 Jan 2004 script(1)
All times are GMT -4. The time now is 12:34 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy