Login or Register to Ask a Question and Join Our Community


Shell Programming and Scripting

Environment Variables in text file and read command

Login to Discuss or Reply to this Discussion in Our Community

 
Thread Tools Search this Thread
Top Forums Shell Programming and Scripting Environment Variables in text file and read command
# 1  
Old 04-20-2010
Tools Environment Variables in text file and read command
I cannot get the following substitution ($ORACLE_SID) to work:

The variable ORACLE_SID is set to wardin my environment. It has been exported.

I have a text file called test.dat:
/u07/oradata/${ORACLE_SID}/extab/finmart/summit/ps_voucher_line_crnt_ex.dbf
/u07/oradata/ward/extab/finmart/summit/ps_voucher_line_crnt_ex.dbf

A basic version of my script is:

Code:
 
#!/bin/ksh
 
cat $FILE_DIR/test.dat | while read CURRENT_FILE
do
    ls $CURRENT_FILE
    echo ""
done

My Output:

/u07/oradata/${ORACLE_SID}/extab/finmart/summit/ps_voucher_line_crnt_ex.dbf: No such file or directory

/u07/oradata/ward/extab/finmart/summit/ps_voucher_line_crnt_ex.dbf

I have determined a workaround with sed:

Code:
 
 sed "s/\$ORACLE_SID/${ORACLE_SID}/" test.dat > test.dat.dbname

I have tried many variations, with double quotes, using cut, using a for loop, using back quotes, exporting ORACLE_SID (I already have it exported in my environment), etc.

Thanks!
# 2  
Old 04-20-2010
Try:
Code:
eval ls $CURRENT_FILE

Welcome to the forum,
Alister
Last edited by alister; 04-20-2010 at 10:13 PM..
# 3  
Old 04-20-2010
Works great!
Thank you, works great! Smilie
Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Read variables from a text file for use in csh script

Hello, I have a text file (say, declarevars.txt) that contains multiple lines that are essentially meant to be variable declarations: set arr1 = (var1a var1b var1c) set arr2 = (var2a var2b var2c) . . . I want to be able to read this text file within a csh (sorry) script and have that... (2 Replies)
Discussion started by: arjaydj
2 Replies

2. Shell Programming and Scripting

Read record from the text file contain multiple separated values & assign those values to variables

I have a file containing multiple values, some of them are pipe separated which are to be read as separate values and some of them are single value all are these need to store in variables. I need to read this file which is an input to my script Config.txt file name, first path, second... (7 Replies)
Discussion started by: ketanraut
7 Replies

3. Shell Programming and Scripting

Setting environment variables from a file :

Hi, I have around 10 environment variables in my shell script. i want to set this all in a file and just call that file in my shell script. How can i do that ? Please help. TIA! (6 Replies)
Discussion started by: qwertyu
6 Replies

4. Shell Programming and Scripting

Read record from the text file & assign those values to variables in the script

For eg: I have sample.txt file with 4 rows of record like: user1|password1 user2|password2 user3|password3 user4|password4 The username and password is sepsrated by '|' I want to get the 1st row value from the file and assign it to two different variables(username and password) in my... (1 Reply)
Discussion started by: priya001
1 Replies

5. Shell Programming and Scripting

environment variables in a sed script file

Hello Everyone I need to create a script file which must append some lines to a target text file, I'm using sed for windows, the script file look like this: { a\ STRINGTABLE DISCARDABLE\ BEGIN\ 5, 150 {a\ #define RC_SHELL, "%ID_SHELL%"\ #define RC_NAME, "%ID_NAME%"\ END } ... (1 Reply)
Discussion started by: edgarvm
1 Replies

6. Shell Programming and Scripting

Setting environment variables in Cron file

Hi, In Cron file i'm using username and password hard-coded and now i wann to use environmental veraiables in cron file. But Could you please guide me how to use these environmental variables in cron file ? Thanks, Shyamu.A (4 Replies)
Discussion started by: shyamu544
4 Replies

7. UNIX for Dummies Questions & Answers

how to expand environment variables in a file?

I am new to unix and would appreciate if someone could help. I have an environment variable SourceFilePath=/db1/Src/test set on the unix server. I want to expand this SHELL variable in a file using any command sed, awk etc File contents is as follows: var=$SourceFilePath/file.txt ... (2 Replies)
Discussion started by: debbie15
2 Replies

8. Shell Programming and Scripting

Interpreting Logicals/Environment Variables using the read command

Hi All I have something that from the outset seems really trivial but in practice is not quite working. I have the following code sample in my shell script which illustrates the problem echo "enter home directory" read home mkdir $home/newdir The user then enters a logical $HOME... (3 Replies)
Discussion started by: kingpin2502
3 Replies

9. Shell Programming and Scripting

Read variables contain spaces from text file

Dears, I developed a shell script to read varibales from text file as the following: cat /dev/null > /rename-OUT.txt while read line do set -- `echo $line` snmpset -c dslmibs $1 sysName.0 octetstring $2 after=$(snmpget -c dslmibs $1 sysName.0 | cut -d: -f3) echo "$1,$2,$after" >>... (1 Reply)
Discussion started by: ahmed.zaher
1 Replies

10. Shell Programming and Scripting

how can i read text file and assign its values to variables using shell

Hello, I have a cat.dat file, i would like shell to read each 3 lines and set this 3 lines to 3 different variables. my cat.dat is: 11 12 +380486461001 12 13 +380486461002 13 14 +380486461003 i want shell to make a loop and assign 1st line to student_id, 2nd line to... (4 Replies)
Discussion started by: rosalinda
4 Replies
Login or Register to Ask a Question