Splitting a string and putting another string in the middle?


 
Thread Tools Search this Thread
Top Forums UNIX for Dummies Questions & Answers Splitting a string and putting another string in the middle?
# 8  
Old 07-24-2009
Quote:
Originally Posted by jisoo411
That's very interesting, so the list file name is actually fed into the loop (or command) at the very end of the script as opposed to the front. Is there a specific reason for this? Or is it just the way the syntax works? This is all very informative for me, I appreciate it! Smilie

Also, I'd like to put in some error handling. Specifically to watch for file names that would not be present. Would I be looking for the program code variable "$?"? I'm seeing from other examples that checking $? for a non-zero value indicates that the command failed.
The for loop loops through the number of items, separated by spaces, in the variable.
There are more ways to read a file but the used methode is preferred.

Use the test statement for the existence of a file with the -a option.
You can find some tutorials here regarding shell scripting:

https://www.unix.com/answers-frequent...tutorials.html

Regards
 
Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

Map a string in a the middle of a record

Hi Folks! I hope you can help me figure this out. I need to print a record which contains the contents of a config file. The contents of the config file should be found within the 21st and the 30th position of the fixed width reference file. Config File: aaaa bbbb cccc Reference... (3 Replies)
Discussion started by: kokoro
3 Replies

2. Shell Programming and Scripting

Putting white Space at the end of the string

Hi Guys, Hope, you all are doing good out there. I am writing a shell script and currrint in need of your help. This is what I need to do; I have position based plain file. One of the fields is 15 character long. I need to fill that field. The problem is that the value is dynamic, it could... (4 Replies)
Discussion started by: singh.chandan18
4 Replies

3. Linux

Remove newline in middle of string

my file input is with tab as delimiter, and in every line, there would be a skip of line with an unexcepted newline breaker. I'd like to remove this \n and put the information in the same line. INPUT a1 b1b2 c1 c2 d1 a2 b3 c3 d4 OUTPUT a1 b1b2 c1c2 ... (9 Replies)
Discussion started by: kinkichin
9 Replies

4. Shell Programming and Scripting

Find the middle character from a string using sed

Input: qwertmyuiop It should print "m". What's the command to do this with sed? (6 Replies)
Discussion started by: cola
6 Replies

5. UNIX for Dummies Questions & Answers

Help with splitting a string..

Hello I need help with the following. I have strings like #if defined(__def1__) #if defined(__def1__) || defined(__def2__) #if defined(__def1__) && defined(__def2__) && defined(__def3__). #if defined(__def1__) || defined(__def2__) || defined(__def3__). I need to print what is there in... (4 Replies)
Discussion started by: srk
4 Replies

6. UNIX for Dummies Questions & Answers

Add string to middle of a file

Hi, I want to write a script that takes a file and a string as params and adds the string to the middle line of the file. Also, I want to output the results back to the original file passed without using temp files. I am very much new to UNIX so this is all a little like black magic to me at... (15 Replies)
Discussion started by: Chiefos
15 Replies

7. Shell Programming and Scripting

stripping certain characters in at the middle of a string

I am trying to strip out certain characters from a string on both (left & right) sides. For example, line=see@hear|touch, i only want to echo the "hear" part. Well i have tried this approach: line=see@hear|touch templine=${line#*@} #removed "see@" echo ${templine%%\|*} #removed... (4 Replies)
Discussion started by: mcoblefias
4 Replies

8. Shell Programming and Scripting

Splitting a string

Hi, I am new to shell scripting, Can any body suggest me how I can split a string with a delimiter as whitespace into words and store into a array. I have read a line from file, now I want to split the line into words and store in a array for further use. eg : the sky is blue want... (3 Replies)
Discussion started by: smk
3 Replies

9. Shell Programming and Scripting

add a string in the middle of the file

i want to add a string in a very top of a file without using VI or SED or AWK this is what ive done: (echo '0a'; echo 'LINE OF TEXT'; echo '.'; echo 'wq') | ed -s myfile to add astrng right in the middle i could have count the lines of the file and just chenge the address. ... (6 Replies)
Discussion started by: ciroredz
6 Replies

10. Shell Programming and Scripting

Problem to add the string(without sed & awk) into the middle of file

Hi, I have tried many times to add the string into the first line of the file or the middle of the file but could not find the solution. I first tried by $echo "paki" >> file This code only append paki string at the end of file "file" but how can i add this "paki" into the first line or... (5 Replies)
Discussion started by: ali hussain
5 Replies
Login or Register to Ask a Question