Sorry for such a dreadful title, but I'm not sure how to be more descriptive. I'm hoping some of the more gurutastic out there can take a look at a solution I came up with to a problem, and advice if there are better ways to have gone about it.
To make a long story short around 20K pieces of... (2 Replies)
I'm trying to understand if it's possible to create a set of variables that are numbered based on another variable (using eval) in a loop, and then call on it before the loop ends.
As an example I've written a script called question (The fist command is to show what is the contents of the... (2 Replies)
Hi Im running this script, which is supposed to find the max value build some tables and then stop running once all the tables are built. Thing is , it keeps assigning a null value to $h and then $g is null so it keep building tables i.e. testupdateNUL. How can I stop this? Here is what I have:
... (4 Replies)
Hi all
Sorry for the basic question, but i am writing a shell script to get around a slightly flaky binary that ships with one of our servers. This particular utility randomly generates the correct information and could work first time or may work on the 12th or 100th attempt etc !.... (4 Replies)
Hi,
hope I am posting in the right section.
My problem is that I have 2 or more arguments passed and I want to check if the arguments passed exists or not.
The first argument should not exist and the remaining others should exist.
example:
./shells.sh argument1 argument2 argument3
... (5 Replies)
Hi, I was debating if I should put this in the dummies or scripts section, I apologize in advance if I chose poorly.
Fairly new to Unix and BASH scripting but I thought I made it fairly well given my limited understanding. However, the output indicates that it's looping and I'm ending up with a... (5 Replies)
Hello All,
Maybe I'm Missing something here but I have NOOO idea what the heck is going on with this....?
I have a Variable that contains a PATTERN of what I'm considering "Illegal Characters". So what I'm doing is looping
through a string containing some of these "Illegal Characters". Now... (5 Replies)
Hi,
I want to read file multiple times. Right now i am using while loop but that is not working.
ex.
While read line
do
while read line2
do
echo stmt1
#processing some data based on data.,
done < file2.txt
done < file1.txt # This will have 10... (4 Replies)
Hi all,
i developed a script to measure the uptime of a process in a Solaris 10/11 environments.
All is well, but i came across a situation where there are multiple processes of the same name. Basically i have the following result file:
beVWARS 13357 19592122
beVWARS 14329 19591910... (4 Replies)
Discussion started by: nms
4 Replies
LEARN ABOUT PLAN9
srv
SRV(3) Library Functions Manual SRV(3)NAME
srv - server registry
SYNOPSIS
bind #s /srv
#s/service1
#s/service2
...
DESCRIPTION
The srv device provides a one-level directory holding already-open channels to services. In effect, srv is a bulletin board on which pro-
cesses may post open file descriptors to make them available to other processes.
To install a channel, create a new file such as /srv/myserv and then write a text string (suitable for strtoul; see atof(2)) giving the
file descriptor number of an open file. Any process may then open /srv/myserv to acquire another reference to the open file that was reg-
istered.
An entry in srv holds a reference to the associated file even if no process has the file open. Removing the file from /srv releases that
reference.
It is an error to write more than one number into a server file, or to create a file with a name that is already being used.
EXAMPLE
To drop one end of a pipe into /srv, that is, to create a named pipe:
int fd, p[2];
char buf[32];
pipe(p);
fd = create("/srv/namedpipe", 1, 0666);
sprint(buf, "%d", p[0]);
write(fd, buf, strlen(buf));
close(fd);
close(p[0]);
write(p[1], "hello", 5);
At this point, any process may open and read /srv/namedpipe to receive the hello string. Data written to /srv/namedpipe will be received
by executing
read(p[1], buf, sizeof buf);
in the above process.
SOURCE
/sys/src/9/port/devsrv.c
SRV(3)