I have a Linux socket server program. I need to run the commands sent by the client and return the output to client. Is there a quicker way?
I tried with
ptr=popen(command, "r"); and then
fgets(buf, size,ptr);
write buf to socket
fgets hangs for me.
Now, I would like to know if I can... (3 Replies)
How can I grep exactly a string that has .,/ characters using grep?
Example: I want to grep ONLY string1 and not string1.more or string1.more.evenmore
#lsauth ALL|grep 'string1'
All output:
string1 <--- This is the only I want.
string1.more
string1.evenmore.
more.string1... (4 Replies)
This has been bothering me for 3 days.
$> hostname
cepsun64amd
And I just want "cepsun",
I would normally do h=`hostname`; ${h%%64*}
But I am looking for a one-liner just for my own knowledge, because if there is a way to do this, I should know it by now.
Anyway, so is this... (2 Replies)
Hi All
I am trying to run a script in linux wherein i have a command like this
grep ^prmAttunityUser= djpHewr2XFMAttunitySetup_ae1_tmp
djpHewr2XFMAttunitySetup_ae1_tmp is a temporary file in which the user value is stored but this command in the script returns me balnk value whereas it has a... (4 Replies)
Hi All,
I am trying to list the various dates for which the file is available in a directory using the command below, (& subsequently pass the command output to a loop)
Command :
ls dir|grep 'filename'|cut -d '_' -f1|cut -c1-8|tr '\n' ','
However, it is giving me an extra comma... (6 Replies)
Hi Experts,
I am very much new to linux scripting, I am currently working on reducing my manual work and hence writing a script to automate few task.
I am running below command to snmpwalk the router..
snmpwalk -v 3 -u WANDL_SU -a MD5 -A vfipmpls -x DES -X VfIpMpLs -l authPriv... (19 Replies)
I am using an awk command to extract a particular portion of a string. Below is the command and its output on a Linux system:
oracle@host1:/tmp (/home/oracle)
$uname -a
Linux host1 2.6.32-279.39.1.el6.x86_64 #1 SMP Fri Nov 15 05:38:26 EST 2013 x86_64 x86_64 x86_64 GNU/Linux
... (7 Replies)
I have a file example.txt as follows :SomeTextGoesHere
$$TODAY_DT=20140818
$$TODAY_DT=20140818
$$TODAY_DT=20140818I need to automatically update the date (20140818) in the above file, by getting the new date as argument, using a shell script.
(It would even be better if I could pass... (5 Replies)
I have two questions on Linux's free command. Below, I have provided output from my home laptop (fedora 26 ) which has 16GB Physical RAM and a production server (RHEL 7.4) which has 24GB RAM.
Question1. What exactly does the buffer/cache column say in free command's output ? buffer/cache is... (9 Replies)
Discussion started by: omega3
9 Replies
LEARN ABOUT X11R4
shell
shell(1F) FMLI Commands shell(1F)NAME
shell - run a command using shell
SYNOPSIS
shell command [command] ...
DESCRIPTION
The shell function concatenate its arguments, separating each by a space, and passes this string to the shell ($SHELL if set, otherwise
/usr/bin/sh).
EXAMPLES
Example 1: A sample output of shell command.
Since the Form and Menu Language does not directly support background processing, the shell function can be used instead.
`shell "build prog > /dev/null &"`
If you want the user to continue to be able to interact with the application while the background job is running, the output of an exe-
cutable run by shell in the background must be redirected: to a file if you want to save the output, or to /dev/null if you don't want to
save it (or if there is no output), otherwise your application may appear to be hung until the background job finishes processing.
shell can also be used to execute a command that has the same name as an FMLI built-in function.
NOTES
The arguments to shell will be concatenate using spaces, which may or may not do what is expected. The variables set in local environments
will not be expanded by the shell because "local" means "local to the current process."
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Availability |SUNWcsu |
+-----------------------------+-----------------------------+
SEE ALSO sh(1), attributes(5)SunOS 5.10 5 Jul 1990 shell(1F)