C-shell: variable syntax question

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Question regarding quotation syntax

Hey guys, my first post on UNIX Forums(much overdue IMO)! I've got this bit of code that doesn't seem to be working correctly for an Android app I'm working on: "screen -S gmod1 -p 0 -X stuff " & "" & command.text & "`echo -ne '\015'`""" Basically it types command.text(variable determined...

2. Shell Programming and Scripting

A Perl Syntax Question.

Greetings! Here's what I believe is a "simple one" for the community tonight ;) What I'm trying to do is assign a "true/false" value to a variable depending upon whether a named process (some-process) exists; and then test for this value in the succeeding logic. I banged my head against the...

3. Shell Programming and Scripting

Variable syntax error in $?

hi all , i just tried to take the status of previous command inside the script using echo $?. It throws me a variable syntax error , but when i use echo $? as an individual command it works perfectly . can anyone Please tell me why am getting a variable syntax error when i use echo $?...

4. Shell Programming and Scripting

Cleaner way to use shell variable in awk /X/,/Y/ syntax?

$ cat data Do NOT print me START_MARKER Print Me END_MARKER Do NOT print me $ cat awk.sh start=START_MARKER end=END_MARKER echo; echo Is this ugly syntax the only way? awk '/'"$start"'/,/'"$end"'/ { print }' data echo; echo Is there some modification of this that would work? awk...

5. Shell Programming and Scripting

Question about syntax error

first of all.. sorry about all the question bombing.. im bored atm so im currently playing around with sh scripting hehe s = `expr ls -s Documents | grep Music | awk '{ print $1 }' ` t = `expr $t + $s` it give syntax error s not found t not found lol... any idea why?

6. Shell Programming and Scripting

Question about Special Shell Variable "$-"

Question: How I can change the shell option in my current environment, which I want to change the result of the command echo $-. Background: Special variable $-. It means the current shell option, and in my ENV, the result of this command as follows. -bash-3.2$ echo $- himBH -bash-3.2$ ...

7. Shell Programming and Scripting

awk syntax question

Hi I use awk command to delete the first blanc line of a file: awk '/^$/ && !f{f=1;next}1' infile > outfile can somebody please explain me what the last "1'" in !f{f=1;next}1' stands for... Thansk a lot -A

8. UNIX for Dummies Questions & Answers

AWK syntax question

Hi, Have to check file names in some given directory. SO, What is the right syntax here: *$3*=="'$object_list'" - just wanted to check if $3 is in the object_list. And also, Do I need so many quotes around?

9. UNIX for Dummies Questions & Answers

Setting a variable (need syntax help)

I need some syntax help (working in a bash shell) I have a variable which is a filename with an extension, and I need to create another variable with the same name but a different extension To explain, the input file should be called something like "filename.L1" and the output file should be...

10. Shell Programming and Scripting

Syntax to export any variable

How to export variables on a UNIX prompt. Please provide me syntax. Thanks in advance. Malay

LEARN ABOUT DEBIAN

explain_setenv_or_die

explain_setenv_or_die(3)				     Library Functions Manual					  explain_setenv_or_die(3)

NAME

       explain_setenv_or_die - change or add an environment variable and report errors

SYNOPSIS

       #include <libexplain/setenv.h>
       void explain_setenv_or_die(const char *name, const char *value, int overwrite);
       int explain_setenv_on_error(const char *name, const char *value, int overwrite);

DESCRIPTION

       The explain_setenv_or_die function is used to call the setenv(3) system call. On failure an explanation will be printed to stderr, obtained
       from the explain_setenv(3) function, and then the process terminates by calling exit(EXIT_FAILURE).

       The explain_setenv_on_error function is used to call the setenv(3) system call. On failure  an  explanation  will  be  printed  to  stderr,
       obtained from the explain_setenv(3) function, but still returns to the caller.

       name    The name, exactly as to be passed to the setenv(3) system call.

       value   The value, exactly as to be passed to the setenv(3) system call.

       overwrite
	       The overwrite, exactly as to be passed to the setenv(3) system call.

RETURN VALUE

       The  explain_setenv_or_die  function  only  returns  on	success, see setenv(3) for more information. On failure, prints an explanation and
       exits, it does not return.

       The explain_setenv_on_error function always returns the value return by the wrapped setenv(3) system call.

EXAMPLE

       The explain_setenv_or_die function is intended to be used in a fashion similar to the following example:
	      explain_setenv_or_die(name, value, overwrite);

SEE ALSO

       setenv(3)
	       change or add an environment variable

       explain_setenv(3)
	       explain setenv(3) errors

       exit(2) terminate the calling process

COPYRIGHT

       libexplain version 0.52
       Copyright (C) 2010 Peter Miller

															  explain_setenv_or_die(3)

Solaris