Sponsored Content
Full Discussion: System call oddity
Top Forums Shell Programming and Scripting System call oddity Post 302937688 by sea on Saturday 7th of March 2015 09:07:52 PM
Old 03-07-2015
Hi, welcome to the forum Smilie

In this case, try removing the quotes of the last executed line from [ICODE]"$data"[/ICODE].
Also, cat will produce output already, so there is no need to echo this.

And to make it even simpler try this as your last line:
[CODE]$func1 $me[/CODE]

hth

EDIT:
Sry looked good at first sight.

---------- Post updated at 04:07 ---------- Previous update was at 03:40 ----------

One should not parse itself, this can cause incredible forks.
Despite said thing, i tried your code.
While i fail to understand why you cant use func1/2/3 from your original script, i found a work around for you.

Code:
#!/bin/sh
##a b c
##a b d
##a "b" x
##a p "b"

me="$0"
func1="grep ^##"
str1="a b"
str2="\"b"
$func1 $me | grep "$str2"

Note that the `` changed to $(), that is because the later is easier to manage.
Also note that str2 contains an escaped quote-char for its search pattern.

Hope this helps

Last edited by sea; 03-07-2015 at 10:12 PM.. Reason: Code fix - me-string
 

10 More Discussions You Might Find Interesting

1. Programming

semclt system call ???

hi mates, What is the : semctl system call for? any example will be helpful and be appreciated. cya and thanx abdul (2 Replies)
Discussion started by: abdul
2 Replies

2. UNIX for Advanced & Expert Users

how to differentiate system call from library call

Hi, Ho do I differentiate system call from library call? for example if I am using chmod , how do I find out if it is a system call or library call? Thanks Muru (2 Replies)
Discussion started by: muru
2 Replies

3. Programming

c system call

How the c compiler differentiates the system calls and function calls? (1 Reply)
Discussion started by: rangaswamy
1 Replies

4. Linux

system call problem

hi, where can I find the detail information about the syscall in binary instructions of linux/mips. for example, in linux/mips: li v0, 4140 syscall it's a syacall of "lseek" , but how can I find that which registers will be used in this syscall , and the meaning of the arguments in the... (2 Replies)
Discussion started by: zerocool_08
2 Replies

5. Shell Programming and Scripting

system call

Hi, How to write a system calls in a script ? > cd $HOME > ls -ltr thanks in advance.. (10 Replies)
Discussion started by: hegdeshashi
10 Replies

6. Programming

C:system call

Hi I'm studing the system call. I've written a small program that return the time spent in doing some operations. Now I'd like to write one that return the time spent in user mode of a process. I'm reading that i should use the tms struct: clock_t times(struct tms *buf); struct tms {... (2 Replies)
Discussion started by: Dedalus
2 Replies

7. Programming

system call

I have a cgi script which is called after certain time interval, which has this: system ("ls -l /tmp/cgic* | grep -v \"cgicsave.env\" | awk '{print $5}'"); During the execution of this script,the output is 0 sometimes. But due to this the system call is not working at all and doesnt o/p... (2 Replies)
Discussion started by: xs2punit
2 Replies

8. Programming

need help with system call

hi everyone i wrote a system call and compiled the kernel succesfully... my system call is in a file in the kernel folder named my_syscall1.c (kernel/my_syscall1.c) the header file for this system call i added it in the folder include like this include/my_syscall1/my_syscall1.h my problem is... (2 Replies)
Discussion started by: demis87
2 Replies

9. Shell Programming and Scripting

system call

Trying to figure out a load issue with a webserver. I have traced a php script and noticed the following connect(4, {sa_family=AF_INET, sin_port=htons(3306), sin_addr=inet_addr("XX.XX.XX.XX")}, 16) = -1 EINPROGRESS (Operation now in progress) <0.000035> poll(, 1, 2000) = 1 () <0.000120>... (5 Replies)
Discussion started by: rajan007
5 Replies

10. Programming

Bind system call

We are calling the bind system call as below bind(sfd, (struct sockaddr *) &addr, sizeof(struct sockaddr_un));Why there is difference in third parameter getting the sizeof as "struct sockaddr_un", wherein the 2nd parametere we are passing it as "(struct sockaddr *)"? Regards, Sajjan (2 Replies)
Discussion started by: VSSajjan
2 Replies
RBASH(1)						      General Commands Manual							  RBASH(1)

NAME
rbash - restricted bash, see bash(1) RESTRICTED SHELL
If bash is started with the name rbash, or the -r option is supplied at invocation, the shell becomes restricted. A restricted shell is used to set up an environment more controlled than the standard shell. It behaves identically to bash with the exception that the follow- ing are disallowed or not performed: o changing directories with cd o setting or unsetting the values of SHELL, PATH, ENV, or BASH_ENV o specifying command names containing / o specifying a filename containing a / as an argument to the . builtin command o specifying a filename containing a slash as an argument to the -p option to the hash builtin command o importing function definitions from the shell environment at startup o parsing the value of SHELLOPTS from the shell environment at startup o redirecting output using the >, >|, <>, >&, &>, and >> redirection operators o using the exec builtin command to replace the shell with another command o adding or deleting builtin commands with the -f and -d options to the enable builtin command o using the enable builtin command to enable disabled shell builtins o specifying the -p option to the command builtin command o turning off restricted mode with set +r or set +o restricted. These restrictions are enforced after any startup files are read. When a command that is found to be a shell script is executed, rbash turns off any restrictions in the shell spawned to execute the script. SEE ALSO
bash(1) GNU Bash-4.0 2004 Apr 20 RBASH(1)
All times are GMT -4. The time now is 09:19 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy