12-22-2008
strcat equivalent in shell scripting
Hi all,
How does string concatenation work in shell scripting?
I basically have a variable called "string" and I want to add the strings "aaa" "bbb" "ccc" "ddd" to the variable "string". These strings would be added based on some conditions and separated by spaces . So "string" might look like
string = aaa bbb ccc
Any ideas? Thanks.
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
please give the difference between AIX shell scripting and Unix shell scripting. (2 Replies)
Discussion started by: haroonec
2 Replies
2. Programming
strcat dumping core in the situation like
main()
{
char* item;
char* p=sat_item;
char type;
item=(char*) malloc(strlen(p));
strncpy(type,p,4);
type='\0';
strcat(item,type); //dumping core
}
I couldn't get why strcat dumping core? (3 Replies)
Discussion started by: satish@123
3 Replies
3. Programming
A question to ask.
seq1 = "eeeeeeeeeeeeeeeeee";
seq2 = "dddddddddddddddddddd";
char a = '*';
strcat(*seq2, &a);
strcat(*seq1, seq2);
compilation
warning: passing arg 1 of `strcat' makes pointer from integer without a cast
thanks (4 Replies)
Discussion started by: cdbug
4 Replies
4. Shell Programming and Scripting
Hello,
I need experts help in converting the below tcl function to korn shell function equivalent.
proc lsNetMaskToBits {mask} {
set dw ; # Top N bits set
set dw 0x ; # Make sure it's hexadecimal, else XOR fails.
puts "lsNetMaskToBits dw $dw"
set dw ; # Complement => low 32-N bits... (1 Reply)
Discussion started by: JackMelson
1 Replies
5. Shell Programming and Scripting
In Windows we use cmd.exe \c as the command SHell
What is its equivalent in UNIX ?
Thanx for all your help. (10 Replies)
Discussion started by: simonsimon
10 Replies
6. Shell Programming and Scripting
Hi
How to call a shell scripting through a Perl scripting? Actually I need some value from Shell scripting and passes in the Perl scripting. So how can i do this? (2 Replies)
Discussion started by: anupdas
2 Replies
7. Programming
Anyone have any ideas why when using strcat function I would get some garbage at the beginning of the output string? what I'm doing is something like the following example.
Code:
char temp;
char tempHolder;
for(int i=0;i<something;i++){
sprintf(temp,"%u ", someVariable);... (2 Replies)
Discussion started by: airon23bball
2 Replies
8. Programming
Hello,
#include <stdio.h>
#include <string.h>
void main()
{
char tab={"12"};
FILE *outfile;
char *outname = "/home/dir/";
printf("%s",strcat(outname,tab));
outfile = fopen(strcat(outname,tab), "w");
if (!outfile) {
printf("There was a problem opening %s for writing\n", outname);
... (2 Replies)
Discussion started by: chercheur857
2 Replies
9. UNIX for Dummies Questions & Answers
I have some matlab code that sends the serial port elements of an array using matlab's fwrite function, e.g.:
fwrite(s, , 'uchar');
What would be a unix shell equivalent? E.g., after successfully accessing the port using instructions here:
Simple terminal serial port program for Linux/MacOSX... (3 Replies)
Discussion started by: darwin_886
3 Replies
10. Shell Programming and Scripting
Hi all,
I am learning POSIX shell programming, and the book I read, uses the let command for integer arithmetic.
I have downloaded and use the shellcheck program on Linux.
This programs says:
In POSIX sh, 'let' is undefined.
See the screenshot attached.
What is the POSIX... (1 Reply)
Discussion started by: johnprogrammer
1 Replies
LEARN ABOUT DEBIAN
xotclsh
xotclsh(1) XOTcl Applications xotclsh(1)
__________________________________________________________________________________________________________________________________________________
NAME
xotclsh - Tcl Shell containing object-oriented scripting language XOTcl
SYNOPSIS
xotclsh ?filename arg arg ...?
_________________________________________________________________
DESCRIPTION
xotclsh is a shell-like application that reads XOTcl commands from its standard input or from a file and evaluates them. Similarly as the
relation between tclsh and wish, xowish provides all functionality of xotclsh and provides as well predefined support for TK widgets.
XOTcl (XOTcl, pronounced exotickle) is an object-oriented scripting language based on MIT's OTcl. It is intended as a value added replace-
ment of OTcl.
Scripting languages, such as Tcl, are designed for glueing components together, provide features such as dynamic extensibility and dynamic
typing with automatic conversion, that make them well suited for rapid application development.
The object system of XOTcl enables a user to to define objects, classes, and meta-classes. Classes are special objects with the purpose of
managing other objects. ``Managing'' means that a class controls the creation and destruction of its instances and that it contains a
repository of methods accessible for the instances. Every object may be enhanced with object-specific methods. XOTcl supports single and
multiple inheritance. All object-class and class-class relationships in XOTcl are introspectable and can be dynamically changed at arbi-
trary times. Ambiguities in name resolution of methods are avoided through method chaining through "next", which does not require explicit
method naming.
XOTcl combines the ideas of scripting and object-orientation in a way that preserves the benefits of both of them. It is equipped with sev-
eral new language constructs that help building and managing complex systems. We added the following support:
Dynamic Object Aggregations, to provide dynamic aggregations through nested namespaces (objects).
Nested Classes, to reduce the interference of independently developed program structures.
Assertions, to reduce the interface and the reliability problems caused by dynamic typing and, therefore, to ease the combination of many
components.
Meta-data, to enhance self-documentation of objects and classes.
Per-object mixins, as a means to give an object dynamically access to the methods of one or several supplemental classes.
Per-class mixins, as a means to give all instances of an class dynamically access to the methods of one or several supplemental classes.
Filters as a means of abstractions over method invocations to implement large program structures, like design patterns.
XOTcl provides a value-added replacement of Tcl package loading providing integration with object-oriented constructs and tracking/tracing
of component loading.
VARIABLES
xotclsh sets all variables that tclsh sets, and additionally the following variables:
::xotcl::version XOTcl version number.
::xotcl::confdir Directory for XOTcl configuration.
::xotcl::logdir Directory where logfiles are placed.
KEYWORDS
argument, interpreter, prompt, script file, shell
XOTcl xotclsh(1)