Oh God ! I always thought that if a function in a file file1.c calls another function func2 in file file2.c, then we must include prototype of func2 in file2.h and include it in file1.c
Hi,
I have a function or script like this.
show()
{
echo "Hi"
} | tee -a log
show
This creates a logfile and prints Hi in it. Now when I try to do the same for sql like this:
show()
{
sqlplus -s scott/tiger<<!
select * from details;
!
} | tee -a log
show
Then it gives me a... (2 Replies)
Hi there, I'm having a bit of a strange problem which I would appreciate some help with.
The Problem:
I have two external hard drives, but I'm borrowing one off my parents to copy data too (one of mine, which is identical to theirs - WD MyBook 300g - is on its way out).
Fedora 9 recognizes... (3 Replies)
Hi,
I'm searching for an solution for the following problem.
I want fetch some mails via pop3 from a@a.com with fetchmail.
That works perfectly. Now any incoming mail should forwarded to b@b.com via smtp obv. But I don't know how to configure that. All online tutorials describe forwarding to... (0 Replies)
Why this is happening when both of them compiled together and run?
I am getting segmentation fault SIGSEGV.
File1.c:
int arr;
File2.c:
extern int *arr;
int main() {
arr = 100;
} (3 Replies)
Hi, im making a little script but need some help
Code i have so far is
read -p 'Bot Nickname:' ecnick
read -p 'Bot Username:' ecusername
read -p 'Bot Realname:' ecrealname
read -p 'Your Email:' ecemail
echo ''
echo Your bots nickname is set to $ecnick
echo Your bots username is set to... (2 Replies)
Hi All,
Can any one help me.
I am calling in a function2 with string as parameter from function1, the function1 gives 3 values. how i get the 3 values from funciton2 to function1. i have to give a return or something.
thanks in advance. (2 Replies)
I have 7 functions those need to be executed as command line inputs, I tried with below code it’s not executing function. If I run the ./script 2 then fun2 should execute , how to initiate that function I tried case and if else also, how to initiate function from command line
if
then... (8 Replies)
In the header file data.h i got:
const char ack_msg = "ack: received your msg\n";
In the code file server.c i got:
extern const char ack_msg;
And else it is only used in a function call:
user$ grep ack_msg *c *h
server.c:extern const char ack_msg;
server.c: n = write(clientsfd,... (5 Replies)
I saw a header (.h) file with mixture of "regular" function declarations and other extern function declarations. As I was told all function declarations are implicitly external and the extern on functions declarations is superfluous. Here my focus is on function declaration, not variable yet.
int... (2 Replies)
Discussion started by: yifangt
2 Replies
LEARN ABOUT OPENSOLARIS
comm
comm(1) User Commands comm(1)NAME
comm - select or reject lines common to two files
SYNOPSIS
comm [-123] file1 file2
DESCRIPTION
The comm utility reads file1 and file2, which must be ordered in the current collating sequence, and produces three text columns as output:
lines only in file1; lines only in file2; and lines in both files.
If the input files were ordered according to the collating sequence of the current locale, the lines written will be in the collating
sequence of the original lines. If not, the results are unspecified.
OPTIONS
The following options are supported:
-1 Suppresses the output column of lines unique to file1.
-2 Suppresses the output column of lines unique to file2.
-3 Suppresses the output column of lines duplicated in file1 and file2.
OPERANDS
The following operands are supported:
file1 A path name of the first file to be compared. If file1 is -, the standard input is used.
file2 A path name of the second file to be compared. If file2 is -, the standard input is used.
USAGE
See largefile(5) for the description of the behavior of comm when encountering files greater than or equal to 2 Gbyte ( 2^31 bytes).
EXAMPLES
Example 1 Printing a list of utilities specified by files
If file1, file2, and file3 each contain a sorted list of utilities, the command
example% comm -23 file1 file2 | comm -23 - file3
prints a list of utilities in file1 not specified by either of the other files. The entry:
example% comm -12 file1 file2 | comm -12 - file3
prints a list of utilities specified by all three files. And the entry:
example% comm -12 file2 file3 | comm -23 -file1
prints a list of utilities specified by both file2 and file3, but not specified in file1.
ENVIRONMENT VARIABLES
See environ(5) for descriptions of the following environment variables that affect the execution of comm: LANG, LC_ALL, LC_COLLATE,
LC_CTYPE, LC_MESSAGES, and NLSPATH.
EXIT STATUS
The following exit values are returned:
0 All input files were successfully output as specified.
>0 An error occurred.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Availability |SUNWesu |
+-----------------------------+-----------------------------+
|CSI |enabled |
+-----------------------------+-----------------------------+
|Interface Stability |Standard |
+-----------------------------+-----------------------------+
SEE ALSO cmp(1), diff(1), sort(1), uniq(1), attributes(5), environ(5), largefile(5), standards(5)SunOS 5.11 3 Mar 2004 comm(1)