I want to execute a bash script in a C program. Bash script return some message and I want to store this message in a C program. Anybody know how can I do it.
I know I can use 'system("bash myscript.sh")' command in C. But I want to store the message which script return.
I am trying to process a column separated data file, with a few bash command. For example, I have
Code:
file1 aaaa yes
file2 aaaa no
file3 bbbb yes
Let say I want to create new file with the output of first column and do something else with the output of 3rd column. Of course there are many ways to process this data file, but I wish to know by using awk, how could I do it. I'm trying:
Code:
awk '{system("touch $1")}' datafile
but the shell command will not able to get the awk '$1' output. How do I get this done ? And for another question, if the data file contains the variable name of a shell variable, how could I make use of it during a awk output ? For example I have a datafile1:
Code:
server1 yes
server2 no
And in another server declaration data file, I got this datafile2:
Code:
server1=xxx1
server2=yyy1
And in my awk script, I want to achieve something like (the syntax is definitely wrong, just to demonstrate what I assume it will like):
[code]....
SU results in Cannot execute bash: No such file or directory.
View 1 Replies View RelatedI'm playing with perl and found that I could just go:
"perl /home/me/bash_script.sh"
and it would execute, even though it's not a perl script. Is that just a feature or is there something I'm missing? Why does perl do this?
how to execute three processes by one script in bash.........in linux
View 1 Replies View RelatedWhat i want to achieve si simple (i think).
I have this shell command:
Code:
echo -e 'ka 0 00
' > /dev/ttyS0
and i want to execute it from html or php with a button maybe or a link.(it's a command to turn off the monitor)
I am running Ubuntu 9.04 desktop with apache and php installed .
already searched the forum but didn't find/understand how to achieve this functionality.
I'm trying to start bash with a command and have it interactive like this:bash -i -c "echo Welcome!"As in, execute the command and allow me to use it as an interactive shell afterwards. (I'm doing something more complicated than echoing, but this doesn't work.)I've tried this from a running gnome-terminal, from one gnome-terminal to a new one withgnome-terminal and from the Alt+F2 program launcher (with "Run in terminal" ticked).
View 6 Replies View RelatedIn my bash file I have asked to navigate to some subdir, unzip a file and stay there but when I type pwd I can see i'm always back to home dir.Any way to get shell stick to subdir?
View 4 Replies View RelatedAll of a sudden,i can't execute a simple script as follows:
exit 0
and:
exit
I have a computation going which takes a long, but uncertain, amount of time. I have another computation which needs to be run, but _after_ the first one is done. I won't be at the computer at that time to manually start the new process. I've done some Googling, and I found how to delay execution by a specific amount of time (e.g. "start process x in exactly 8 minutes from now), but that isn't quite what I want to do. Essentially, I'd like to tell the shell, "When process #nnnn finishes running, then start process x". Is there a way to do this?
View 6 Replies View RelatedI just installed amanda-backup_client-2.6.0p2-1.rhel4.i386.rpm on my Red Hat Enterprise Linux 4 system. But I don't know who to check if it successfully installed or not. When I try to run amrecover from root, I get:
-bash: /usr/sbin/amrecover: cannot execute binary file
I have some bash and python scripts. Is there any way to encrypt them but still be able to execute them encrypted?
View 7 Replies View Relatedi have a server program which accept multiple client connection and am using polling. like every 2 secs it will look to client whether any data is received after it binded. i have used setitimer but there is runtime error i got.. the server accept all client connection but doesn't execute any msg which client sent.
#include<stdio.h>
#include<stdlib.h>
#include<sys/socket.h>
#include<sys/types.h>
#include<netdb.h>
#include<unistd.h>
#include<pthread.h>
#include<string.h>
[Code]....
I downloaded a program called tonespace http://www.mucoder.net/en/tonespace/ which I extracted and then tried to execute the executable file with ./tonespace. This gives me the following message:
bash: ./tonespace: No such file or directory
When I use the command: file ./tonespace I get this: tonespace: ELF 32-bit LSB executable, Intel 80386, version 1 (SYSV), dynamically linked (uses shared libs), for GNU/Linux 2.6.15, stripped
I dont get it. The file is clearly there, yet when trying to execute it bash doesn't seem to recognize it.
It has permissions rwxr-xr-x and is not owned by root. Am I overlooking something?
I have a web server in my kitchen with apache running on it. Since the upload speed is quite low due to my isp I would like to execute a bash script that uploads a file to another server through a website (which is htaccess protected) The idea in general: Someone with access to my website browses through a folder, copies a file path to an input form and presses "upload". Rather than executing a bash script directly I could have a cron job running in background that finds the path and then uploads the file to the other server I have userspace on and is accessible via sftp/ssh. The file would be than erased later after a couple of days or so. That person would be able to access the file with higher speed some time later without logging in via ssh and doing all that manually.
View 2 Replies View RelatedI would like to know how do I print the line # in a script. My requirement is, I have a script which is about ~5000 lines long. If there are any errors happen I just exit. And I would like to add the line # of the script where the error happened.
View 3 Replies View Relatedsimple bash code:
Code:
#!/bin/bash
trap "echo 'you got me'" SIGINT SIGTERM # to trap ctrl+c
echo "Press ctrl+c during 5 sec loop"
for ((i=0;i<5;i++)); do
[Code]...
How come code behaves normally and stops when ctrl+c signal is caught and resumes, but after I use at least one timeout read in the code it looks like, if signal is caught again it doesn't pause the execution but skips the loop. If you remove -t (timeout) option from the read, both loops look the same!
I have a config file that contains:
my.config:
Code:
Now in my bash script, I want to get the output /home/user instead of $HOME once read. So far, I have managed to get the $HOME variable but I can't get it to echo the variable. All I get is the output $HOME.
Here is my parse_cmd script:
Code:
I have written quite a few separate bash & scripts and php scripts that up to now I have run from cron jobs. However I have to estimate how long each takes to run, before running the next and so it probably takes much longer than necessary to run them all. They have to run in order.
Now there are so many I am thinking it would be better to have a master bash script that would run one after the other, but I am not sure how to get the master script to wait before starting to run the next script. Is this possible and is there a command that will make the script wait between bash and php scripts , for them to finish, before running the next?
I would like to get the filename (without extension) and the extension separately. The best solution I found so far is:
Let FILE="thefilenameofsomefilesfor_instance.txt"
Code:
NAME=`echo "$FILE" | cut -d'.' -f1`
EXTENSION=`echo "$FILE" | cut -d'.' -f2`
I think it would be better to count the len and remove 3 chars to right to get the extension, but it can be macintosh filenames with have 4 chars for extensions.
Is there, by chance, a fancy name to describe code that must be in a program but will never be executed? In one of my (Haskell) programs, I have some error-handling code that must be in the program to keep the compiler happy (due to the type checking). However I know that, due to the logical structure of the program, it is impossible for the code to be evaluated. I am curious if there is a technical name given to code that must exist but cannot be executed.
View 6 Replies View RelatedI am facing problem on executing commands like df -h,ls-l,grep etc in /bin.
it is showing below errors:--
----------------------------------------------------------------------------------
login as: root
root@220.226.102.217's password:
Last login: Sat Jun 4 11:14:20 2011 from 220.227.54.149
-bash: /bin/egrep: cannot execute binary file
[code]....
I've been able to get the right output that I need from sed, but how can I execute the string that sed actually outputs?
View 3 Replies View RelatedIf I put
Code:
$r = exec('whoami');
echo $r;
into my php script, it works fine. However, if I put
Code:
$r = exec('myX11application');
echo $r;
it doesn't (to be precise, the script still works, but myX11application is not executed). Of course, scripts are run by user "apache", who doesn't have access to X11 server and doesn't even have DISPLAY variable defined.I installed virtual framebuffer Xvfb, created a small bash script:
Code:
Xvfb :2
export DISPLAY=:2
myX11application
and called it with exec from php, but it still doesn't run since it looks like Xvfb can't start if the normal X server is running (I need that for development purposes). The reported error from Xvfb is
Code:
(EE) config/hal: NewInputDeviceRequest failed (2)
Is there a solution to have php running your X11 applications with normal X server running?
I'm trying to compile a simple script for a ar71xx (bleeding edge /from snapshots) Openwrt router.I have previously compiled scripts for Kamikaze 8.09. I just copied the gcc file inside the SDK dir and used it without problems.
View 4 Replies View RelatedI'm doing a program and I want it to execute some code during n seconds. For example e put a command in the shell like this 'ls % 10' and the program should run the command ls for 10 seconds.I'm trying something like this:
Code:
pid = fork();
if(pid == 0) {
[code]....
I am executing a run command in a script after that i need to copy files into a directory which are the inputs for the run,on run a new shell is created and the remaining commands in the script does not execute,wot should i do to execute the remaining commands in the script??
View 2 Replies View RelatedAssume two applications, Application A and Application B. Both are written in C language.I had tried to use system() function in Application A to execute Application B. It success, but Application A cannot continue its own tasks before Application B exit. I want Application A to execute Application B, but Application A can continue its tasks without waiting for Application B to exit.
View 3 Replies View Relatedi want to execute iptables command via php. i can run simple command as echo 'iptables -h'; but i can't run ipables -L and i create excutable file (firewall.sh). i can run it on console but not done on php.
View 7 Replies View RelatedThe two host one is Aix 5.3 and another is Suse 10sp2 the both have the same script which including the following parts:
if [ `date +%a` = "Mon" ];then
if [ "$RESULT" = "" ]; then
echo "The `hostname` $DATE ok"
[code]...