Possible ksh93 Bug Expanding Variables?


 
Thread Tools Search this Thread
Top Forums Shell Programming and Scripting Possible ksh93 Bug Expanding Variables?
Prev   Next
# 5  
Old 07-04-2017
Hats off to your debugging skills, Don!

Quote:
Originally Posted by Don Cragun
You are hoping the backslash in the expansion of ${chLine#?} will be treated as a literal backslash character. And, in the expansion of ${chLine} it is. But, in word in ${chLine%word} the backslash is an escape character.
After this i finally understood what the problem was in first place. Thank you for enlightening me.

Quote:
Originally Posted by Don Cragun
Maybe you'd like to try the following which should work with ksh88 and any POSIX conforming shell (including ksh93):
Thank you again for providing even a solution along with the explanation. I was already (reluctantly) dusting off my trusted old C compiler to write the parser there. I am indebted.

bakunin

Last edited by bakunin; 07-04-2017 at 03:41 AM..
 
Login or Register to Ask a Question

Previous Thread | Next Thread

9 More Discussions You Might Find Interesting

1. UNIX for Beginners Questions & Answers

[BASH] eval command not expanding variables as expected.

Hi Guys, I wrote a collection of bash functions years ago and now need to use them again but I'm getting some error messages when eval tries to expand the variables names. I recollect that I used the shopt command to set one of the options but I can't quite remember the command that I... (8 Replies)
Discussion started by: ASGR
8 Replies

2. AIX

Ksh93/AIX compatibility

Hi everyone ! Im trying to know from wich version of AIX KSH93 is available ? Internet tell me 6.x and 7.x AIX are available, bue what about 5.x ? Is KSH93 available on AIX 5.x ? Is it the same way to manipulate variables as KSH93 on 7.x ? Thanks for your support and have a nice day ! (2 Replies)
Discussion started by: majinfrede
2 Replies

3. UNIX for Advanced & Expert Users

Ksh93 on Linux compatible with ksh93 on AIX

Hi Experts, I have several shell scripts that have been developed on a Linux box for korn ksh93. If we want to run this software on an AIX 6.1 box that runs ksh88 by default can we just change the she-bang line to reference /bin/ksh93 which ships with AIX as its "enhanced shell" to ensure... (6 Replies)
Discussion started by: Keith Turley
6 Replies

4. Shell Programming and Scripting

awk issue expanding variables in ksh script

Hi Guys, I have an issue with awk and variables. I have trawled the internet and forums but can't seem to get the exactt syntax I need. I have tried using awk -v and all sorts of variations but I have hit a brick wall. I have spent a full day on this and am just going round in circles. ... (3 Replies)
Discussion started by: gazza-o
3 Replies

5. UNIX for Dummies Questions & Answers

Expanding variables with Ed Bash 3.2.33

Hi, The following code finds the line containing fruits in test.txt and replaces instances of apple with banana. ed -s test.txt <<< $'/fruits/s/apple/banana/g\nw' What I want to do is put variables in the place of fruits, apple and banana. I have tried replacing ' with " to get... (2 Replies)
Discussion started by: de_la_espada
2 Replies

6. Shell Programming and Scripting

Performance degradation with KSH93

Hi, I have a script that calls an external program to perform some calculations and then I read with "grep" and "sed" values from the output files. I've noticed that performance of KSH93 degrades with every iteration. The output files are all the same size, so I don't understand why after the... (2 Replies)
Discussion started by: i.f.schulz
2 Replies

7. Shell Programming and Scripting

ksh88 or ksh93

Hi all! Does anybody know how can I check if any UNIX installation has implemented ksh88 or ksh93? Thanks in advance. Néstor. (3 Replies)
Discussion started by: Nestor
3 Replies

8. Shell Programming and Scripting

ksh93 deprecation...

Any means of running ksh93 in a ksh88-mode? Might sound odd, but I want/need to restrict U/Win-developed scripts to correspond to the ksh88 version on my Solaris environment(s). Thanks. (2 Replies)
Discussion started by: curleb
2 Replies

9. UNIX for Advanced & Expert Users

Expanding Variables in User Input

If have var='$variable' how can I expand $variable. I have tried many thing like duble quotes/braces etc, but nothing worked. I need the solution ASAP. (2 Replies)
Discussion started by: Bsk
2 Replies
Login or Register to Ask a Question