Login or Register to Ask a Question and Join Our Community


UNIX for Dummies Questions & Answers

"_" in variable names

 
Thread Tools Search this Thread
Top Forums UNIX for Dummies Questions & Answers "_" in variable names
# 1  
Old 07-28-2009
"_" in variable names
Hello Experts,

I have written a UNIX shell which spans about 400 lines. I have tried to manage the flow as far as possible using functions. In the main shell flow, there are certain variables, not many really - around 10. These variables would obviously act as globals.
Here I need some advice - would it be a good thing to prefix these variables with an underscore "_" to have better readability? or am I just thinking of something unnecessary?

Regards,
HKansal
# 2  
Old 07-28-2009
there is no problem in using _ inyour variable names :-)
# 3  
Old 07-28-2009
Hello,

I mean, I would just like to use them as a "notation" for variables that are available to every scope; outside any function.

I knew you would be replying, saw you online Smilie

Thank You.

Regards,
HKansal
Last edited by hkansal; 07-28-2009 at 06:26 PM..
# 4  
Old 07-28-2009
My personal rule of thumb: everything global in all caps, everything loop/function local in camel case (starting lower case), everything temporary lower case.

But in general, it's more of a subjective thing, except if you've got a developers document around on how such things should be handled.
 
Login or Register to Ask a Question

Previous Thread | Next Thread

9 More Discussions You Might Find Interesting

1. AIX

Apache 2.4 directory cannot display "Last modified" "Size" "Description"

Hi 2 all, i have had AIX 7.2 :/# /usr/IBMAHS/bin/apachectl -v Server version: Apache/2.4.12 (Unix) Server built: May 25 2015 04:58:27 :/#:/# /usr/IBMAHS/bin/apachectl -M Loaded Modules: core_module (static) so_module (static) http_module (static) mpm_worker_module (static) ... (3 Replies)
Discussion started by: penchev
3 Replies

2. Shell Programming and Scripting

Bash script - Print an ascii file using specific font "Latin Modern Mono 12" "regular" "9"

Hello. System : opensuse leap 42.3 I have a bash script that build a text file. I would like the last command doing : print_cmd -o page-left=43 -o page-right=22 -o page-top=28 -o page-bottom=43 -o font=LatinModernMono12:regular:9 some_file.txt where : print_cmd ::= some printing... (1 Reply)
Discussion started by: jcdole
1 Replies

3. UNIX for Dummies Questions & Answers

Using "mailx" command to read "to" and "cc" email addreses from input file

How to use "mailx" command to do e-mail reading the input file containing email address, where column 1 has name and column 2 containing “To” e-mail address and column 3 contains “cc” e-mail address to include with same email. Sample input file, email.txt Below is an sample code where... (2 Replies)
Discussion started by: asjaiswal
2 Replies

4. UNIX for Dummies Questions & Answers

Appending "_" (underscores) to variable names

Hello, I have a file, inputs.list that contain prefixes to files that are inputs for a program inputs.list A B C D E ... My files are of the format A_1, A_2, B_1, B_2 and so on. I am planning to run a shell script that takes each line from the above file and feed it to the runProg.sh... (3 Replies)
Discussion started by: Gussifinknottle
3 Replies

5. Shell Programming and Scripting

The "read" command misinterprets file names containing spaces

The "read" command, which is built into bash, takes words from the standard input. However, "read" is not good at taking file names if the file names contain spaces. I would like my bash script to ask the user to enter file names, which may contain spaces. Can you think about any technique for... (14 Replies)
Discussion started by: LessNux
14 Replies

6. Shell Programming and Scripting

awk command to replace ";" with "|" and ""|" at diferent places in line of file

Hi, I have line in input file as below: 3G_CENTRAL;INDONESIA_(M)_TELKOMSEL;SPECIAL_WORLD_GRP_7_FA_2_TELKOMSEL My expected output for line in the file must be : "1-Radon1-cMOC_deg"|"LDIndex"|"3G_CENTRAL|INDONESIA_(M)_TELKOMSEL"|LAST|"SPECIAL_WORLD_GRP_7_FA_2_TELKOMSEL" Can someone... (7 Replies)
Discussion started by: shis100
7 Replies

7. Shell Programming and Scripting

if [ "variable" = "numerical-range" ]; then

been a while so i'm a bit rusty and need a little help. writing a script that needs to compare $EXECHOST(a number) against a numerical range and then set a value. below isn't working but should give you folks an idea of my goal: if ; then echo "This is a 32B machine, exiting..." if ;... (4 Replies)
Discussion started by: crimso
4 Replies

8. 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

9. Shell Programming and Scripting

passing a list of dynamic names to a "PS" command in shell script?

Hi, I am new to shell script. This is my first post .I have written a small script which returns list of names starts with "ram" in /etc/passwd .Here is that:- #!/bin/ksh NAME_LIST="name_list.txt" cat /dev/null > $NAME_LIST evalcmd="cat /etc/passwd | grep "^ram?*" | cut -d: -f1" eval... (3 Replies)
Discussion started by: sachin.tendulka
3 Replies
Login or Register to Ask a Question