Sponsored Content
Top Forums Shell Programming and Scripting Trying to implement count_collatz_step function Post 302956847 by Don Cragun on Sunday 4th of October 2015 08:48:47 PM
Old 10-04-2015
Hi Bunching,
Please show us your working C code. I'm guessing that you have misunderstood how echo and read work in bash and that your function might want to return a value rather than print a value, but without a description of what you're trying to do (rather than just a statement that your shell script isn't working), it is hard to guess how it should be corrected. But, one clear thing is that there is nothing in your code that invokes your function. (You print the name of the function as one of the arguments to one of your echo statements, but you do not call the function.)

Wisecracker,
Note that in a bash function, $1 is the 1st command line argument passed to the function; not a command line argument passed to the script containing the function definition.
 

10 More Discussions You Might Find Interesting

1. UNIX for Advanced & Expert Users

how can i implement rlogin

how can i use a rlogin with out entered a password, someone tell me about configure the next files /.rhosts /etc/hosts.equiv and /etc/hosts but i not sure about that, or there are not enough could you tell me how to do that? (3 Replies)
Discussion started by: jav_v
3 Replies

2. Programming

how does va_arg implement ?

1 . How does va_arg implemented by system? (2 Replies)
Discussion started by: chenhao_no1
2 Replies

3. AIX

how to implement timer

anyone can help me how to implement the timer on AIX? I tried with 'setitimer' and its related functions, but it does not work correctly,the program exited each time. thanks (2 Replies)
Discussion started by: Frank2004
2 Replies

4. Programming

How to implement polling for a function using timer in C?

Hi, Can you please help me in implementing a timer based polling for function in C? ie. the function should be called in say 30secs(when 30secs has lapsed). Thanks (7 Replies)
Discussion started by: naan
7 Replies

5. Shell Programming and Scripting

how to implement this

Hi all, could any of you please help me on my problem.. we are doing FTP (one report out put) from one server to another server through unix shell script program. Due to the network issues, some times FTP process is hanging. So we planned to modify the existing program with the following... (2 Replies)
Discussion started by: kishore_jasthi
2 Replies

6. Shell Programming and Scripting

Want to implement VLOOKUP (Excel function) in Unix

Dear All, i want to implement vookup function which is there in excel into Unix. Suppose i have 2 files. The files are given below. File1: MSC Cell SDCA Patna-1 12 Bihar Patna-2 45 Ranchi Bhopal-1 85 Raigarh Bhopal-2 ... (8 Replies)
Discussion started by: pravani1
8 Replies

7. Shell Programming and Scripting

How to implement this?

hi i have a file like 1,"A","B" 2,"C","D" 1,"E","F" 3,"G","H" in output i need like 3,"G","H" 1,"E","F" 2,"C","D" 1,"A","B" (12 Replies)
Discussion started by: angel12345
12 Replies

8. Shell Programming and Scripting

How to implement scenario?

hi, i am having three files which is having following data file1: field1 field2 field3 1 A B 2 C D 3 E F file2: 4 G H 1 I J 5 K L file3: 4 M N (3 Replies)
Discussion started by: angel12345
3 Replies

9. Programming

Implement ps command in C

Hello, could anybody explain how the ps command works? I know something about the proc file system. But I'm still not sure about how it exactly works. Like ps without any option will print out the current user's processes, but it never displays my web browsers such as firefox or my LibreOffice... (3 Replies)
Discussion started by: freedombird9
3 Replies

10. UNIX for Dummies Questions & Answers

Implement the '&&' function in a shell

Hello, I'm currently implementing the && function in a shell using C. For example, if we input cmd1 && cmd2, then cmd2 executes only when cmd1 exits successfully. I'm thinking about: int main() { int i; char **args; while(1) { printf("yongfeng's shell:~$ "); args =... (5 Replies)
Discussion started by: Yongfeng
5 Replies
echo(1) 						      General Commands Manual							   echo(1)

NAME
echo - echo (print) arguments SYNOPSIS
[arg] ... DESCRIPTION
writes its arguments separated by blanks and terminated by a new-line on the standard output. It also understands C-like escape conven- tions; beware of conflicts with the shell's use of write an alert character backspace print line without appending a new-line form-feed new-line carriage return tab vertical tab backslash the 8-bit character whose ASCII code is the 1-, 2-, 3- or 4-digit octal number n, whose first character must be a zero. write an 8-bit value that is the zero-, one-, two- or three-digit octal number num is useful for producing diagnostics in command files and for sending known data into a pipe. Notes Berkeley differs from this implementation. The former does not implement the backslash escapes. However, the semantics of the escape can be obtained by using the option. The echo command implemented as a built-in function of follows the Berkeley semantics (see csh(1)). EXTERNAL INFLUENCES
Environment Variables determines the interpretation of arg as single and/or multi-byte characters. If is not specified in the environment or is set to the empty string, the value of is used as a default for each unspecified or empty vari- able. If is not specified or is set to the empty string, a default of "C" (see lang(5)) is used instead of If any internationalization variable contains an invalid setting, behaves as if all internationalization variables are set to "C". See environ(5). International Code Set Support Single- and multi-byte character code sets are supported. AUTHOR
was developed by OSF and HP. SEE ALSO
sh(1). BUGS
No characters are printed after the first This is not normally a problem. STANDARDS CONFORMANCE
echo(1)
All times are GMT -4. The time now is 01:48 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy