TCSH scripts that use the same variable names


 
Thread Tools Search this Thread
Top Forums Shell Programming and Scripting TCSH scripts that use the same variable names
# 1  
Old 01-06-2013
TCSH scripts that use the same variable names

If I run two different TCSH scripts simultaneously that use identical variable names will this cause any problems?
# 2  
Old 01-06-2013
Quote:
Originally Posted by thibodc
If I run two different TCSH scripts simultaneously that use identical variable names will this cause any problems?
Each process running a script will have its own copy (not shared) of the variables it uses.

However, if two or more script write to a single file, output from one copy of the script may be interleaved with output from other scripts, overwrite output from from other scripts, or may be appended to output from other scripts depending on timing and the modes uses when the output files are opened. Similar problems may apply to input files if the input files are not regular files or if a regular file is modified while one or more copies of the script are running.
Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Tcsh, using " in a string variable

Hallo, I try to write a tcsh-script which works with ImageMagick. The following command line works perfectly: convert a.tif -pointsize 80 -draw " gravity NorthWest fill black text 0,12 a " b.tif I use the following code in a script (it is a minimal example to show the problem): ... (3 Replies)
Discussion started by: DanielDD
3 Replies

2. UNIX for Dummies Questions & Answers

Tcsh command for assigning output of awk to variable

Hi I have a text file with 2 values and I am trying to assign each value to a variable and then write those to text files. So if the textfile is data.txt with 2 values x and y I want to assign mean=x, and stdev=y and then write these out in text files alongwith the id ($id has already been... (6 Replies)
Discussion started by: violin
6 Replies

3. Shell Programming and Scripting

[SHELL: /bin/sh] For loop using variable variable names

Simple enough problem I think, I just can't seem to get it right. The below doesn't work as intended, it's just a function defined in a much larger script: CheckValues() { for field in \ Group_ID \ Group_Title \ Rule_ID \ Rule_Severity \ ... (2 Replies)
Discussion started by: Vryali
2 Replies

4. Shell Programming and Scripting

Change Variable Value from Multiple Scripts and Use these Variable

Hi to All, Please find below details. file_config.config export file1_status="SUCCESS" export file2_status="SUCCESS" file_one.sh I am calling another two shell script from these script. I need to pass individual two script status (If it's "FAILED") to file_main.sh. file_main.sh I... (2 Replies)
Discussion started by: div_Neev
2 Replies

5. Shell Programming and Scripting

Shell Scripts (Renaming file names with sequential numbers)

Hi there, Firstly, I have no experience with shell scripts so would really appreciate some help. I have the following shell script that is causing some problems: moveit() { && set -x if then DOUBLE_DELIVERY=$(grep... (6 Replies)
Discussion started by: thebeno
6 Replies

6. Shell Programming and Scripting

Problem with File Names under tcsh loop

Hello, I have a question regarding file naming under a loop in tcsh. I have the following code: #!/bin/tcsh foreach file (test/ProteinDirectory/*) # The * is a bunch of ProteinFile1, ProteinFile2, ProteinFile3, etc. sh /bioinfo/home/dgendoo/THREADER/pGenThreader.sh $file $file ... (4 Replies)
Discussion started by: InfoSeeker
4 Replies

7. UNIX for Dummies Questions & Answers

Variable Names With Numbers

Hi Everyone, I was just curious if you are allowed to begin a variable name with a number. For example, I would really like to have the variable 8DAY_AVERAGE. But my shell script only seems to allow EIGHTDAY_AVERAGE. Is there a way I can get the former to work? I am using bash. Thanks a lot! ... (1 Reply)
Discussion started by: msb65
1 Replies

8. Shell Programming and Scripting

executing scripts by reading names from a file

file.txt contains ------------------ sat1 1300 sat2 2400 sat3 sat4 500 I need to write a shell script that will output like the below #output sat1.ksh 1300 sat2.ksh 2400 sat3.ksh sat4.ksh 500 my try ------- #!/bin/ksh for i in `cat file.txt` (3 Replies)
Discussion started by: konark
3 Replies

9. UNIX for Dummies Questions & Answers

Variable names

Hi, I have a variable v_iteration which can equal any 3 digit number eg 001 or 926 I would like to dynamically make a new variable name up using this 3 digit number eg v_another_variable_001=fred v_another_variable_926=joe The following are examples of what I have tried ... (2 Replies)
Discussion started by: Bab00shka
2 Replies

10. Shell Programming and Scripting

Variable names

Hi I have several variables called var1, var2, var3, var4 and so on. I would like to examine the contents of the variables using a loop and a variable called num which equals a figure eg num=3 I wanted to do something like echo $var$num to display the contents of var3 (4 Replies)
Discussion started by: Bab00shka
4 Replies
Login or Register to Ask a Question