I am running a c++ code that will generate various output files.
After generating each and every file I wanted to process that file and remove using shell.
How can I do that?
example for post script:
above code will work for completed simulation.
Now lets say I want to run this scritp along with my c++ and do the same.
is there any wait function in shell to do this job?
example:
Thanks & Regards,
linuxUser_
Last edited by joeyg; 09-02-2014 at 09:47 AM..
Reason: corrected spelling of title
ok, so i want to figure out what type of UNIX i have and in this book im reading about it, it says that i can figure out what type i have by typing the command uname in the prompt. So i did this and it came up saying Darwin?? is that part of System V UNIX or BSD or do i have LINUX? if anyone can... (2 Replies)
I recently purchased a book titled Hacking: The Art of Exploitation. When I got it home I read the preface and found out that i shouldnt have bought it. It says the code examples in this book were done on an x86 based computer (I have a mac). Is there anything I can do to make my mac run similar to... (2 Replies)
:cool:
I need to execute a shell script to do the following:
cat a file
run two back ground processes using the first two values from the file
wait till those background processes finish
run two more background processes using the next two values from the file
wait till those background... (1 Reply)
I am one of the newbies. I want to load linux on my notebook, however, i am not sure which linux is the most recommend for the newbies.
Could you please advise?
Thanks you very much for any advise you may give me.
Best Regards,
SANLEN (2 Replies)
Did not use 'wait' yet.
How I understand by now the wait works only for child processes, started background.
Is there any other way to watch completion of any, not related process (at least, a process, owned by the same user?)
I need to start a background process, witch will be waiting... (2 Replies)
Hello All,
My problem is:
I want to replace a line from a file with sed. The first word in that line is always the same in every server. The second line is server model, which of course will vary from platform to platform and I need to leave that word as it is. After the second word, I need to... (3 Replies)
I am looking to do a count on a database table where some of the elements count double. Say the data is as follows:
id value
1 X
2 Y
3 X
4 X
5 Y
A regular count (SELECT value, COUNT(*) FROM data GROUP BY value) would yield:
X 3
Y 2
However, Y happens to count double so the answer should... (2 Replies)
I have a txt file with several columns and i want to peform an operation on two columns and output it to a new txt file .
file.txt
900.00000 1 1 1
500.00000
500.00000
100000.000
4
4
1.45257346E-07 899.10834 ... (4 Replies)
Connecting to the Internet with OpenVPN, the connection fails. Rerunning openvpn works second time round but the install is hacked at that point (e.g., a rogue 'java-security' update tries to install itself on 'yum update', yum however spots this and rejects the download, other basic things start... (3 Replies)
Hi,
I am facing a strange issue,
when i call a script from my while loop in background it doesnt go in background, despite the wait i put below the whil loop it goes forward even before the process put in background is completed.
cat abc.txt | while read -u4 line
do
#if line contains #... (2 Replies)
Discussion started by: mihirvora16
2 Replies
LEARN ABOUT LINUX
checkbashisms
CHECKBASHISMS(1) General Commands Manual CHECKBASHISMS(1)NAME
checkbashisms - check for bashisms in /bin/sh scripts
SYNOPSIS
checkbashisms script ...
checkbashisms --help|--version
DESCRIPTION
checkbashisms, based on one of the checks from the lintian system, performs basic checks on /bin/sh shell scripts for the possible presence
of bashisms. It takes the names of the shell scripts on the command line, and outputs warnings if possible bashisms are detected.
Note that the definition of a bashism in this context roughly equates to "a shell feature that is not required to be supported by POSIX";
this means that some issues flagged may be permitted under optional sections of POSIX, such as XSI or User Portability.
In cases where POSIX and Debian Policy disagree, checkbashisms by default allows extensions permitted by Policy but may also provide
options for stricter checking.
OPTIONS --help, -h
Show a summary of options.
--newline, -n
Check for "echo -n" usage (non POSIX but required by Debian Policy 10.4.)
--posix, -p
Check for issues which are non POSIX but required to be supported by Debian Policy 10.4 (implies -n).
--force, -f
Force each script to be checked, even if it would normally not be (for instance, it has a bash or non POSIX shell shebang or appears
to be a shell wrapper).
--extra, -x
Highlight lines which, whilst they do not contain bashisms, may be useful in determining whether a particular issue is a false posi-
tive which may be ignored. For example, the use of "$BASH_ENV" may be preceded by checking whether "$BASH" is set.
--version, -v
Show version and copyright information.
EXIT VALUES
The exit value will be 0 if no possible bashisms or other problems were detected. Otherwise it will be the sum of the following error val-
ues:
1 A possible bashism was detected.
2 A file was skipped for some reason, for example, because it was unreadable or not found. The warning message will give details.
SEE ALSO lintian(1).
AUTHOR
checkbashisms was originally written as a shell script by Yann Dirson <dirson@debian.org> and rewritten in Perl with many more features by
Julian Gilbey <jdg@debian.org>.
DEBIAN Debian Utilities CHECKBASHISMS(1)