05-15-2002
Command line parameter for C program
I am writing a C program that part of the idea is to using a command line parameter to control not to run certain part of the sub program.
I am totally new to C, I do not have any idea how to pass a command line arguments from a C program.
Can anyone help ?!
Thanks
10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
can someone please tell me how i can increase the number of characters that can be input on the command line? (2 Replies)
Discussion started by: Scoogie
2 Replies
2. Shell Programming and Scripting
Anyone know how to set it up so that when at command line in unix (specifically solaris 2.5.1), and you hit the tab it will finish the command with the nearest file that matches? AND how to set it up so using up and down arrows access your previous commands?
Thanks for all the help here, i've had... (3 Replies)
Discussion started by: kymberm
3 Replies
3. Shell Programming and Scripting
Hello,
I am trying to replace a string with a paramter given along with the script.
I am replacing application1 to application2 with the script:
./change_app.sh application2
change_app.sh:
#!/bin/ksh
grep $1 applications.dat 2>&1 >/dev/null
echo $1
file=pckage.new
sed 's/Name:... (5 Replies)
Discussion started by: chiru_h
5 Replies
4. Shell Programming and Scripting
Say I have (in psuedocode)
For i=1 to 10
tar cvfb /... 5*i /junk(i)
end
What I mean is that I want each successive for loop to have the block size parameter be 5 times the current counter. This isn't my actual code, just a stupid example...So the question is how do I descrive that parameter... (2 Replies)
Discussion started by: jeriryan87
2 Replies
5. UNIX for Dummies Questions & Answers
Hi.. I am pretty new to Linux . Jus joined 2 weeks ago. My problem is I need to design a particular Application which needs to communicate the Value calclulate by a C++ program 2 another computer..I have done a bit of socket programming to acheive this(The 2 computers are connected via LAN ) ..Now... (1 Reply)
Discussion started by: aytida88
1 Replies
6. Shell Programming and Scripting
Hi,
I need to check if a parameter provided at the command line is equal to --.How can i do that ? Please help me.
Thanks and Regards,
Padmini (4 Replies)
Discussion started by: padmisri
4 Replies
7. Shell Programming and Scripting
"$#" gives the number of command-line arguments. How do you get the last command-line parameter (or any particular one determined by a variable)? I thought it would be "${$#}", but that produces something completely unexpected. (4 Replies)
Discussion started by: dkarr
4 Replies
8. Shell Programming and Scripting
I have a simple script that builds a complex program call which passes a number of parameters to the program. I'm trying to enhance the script to include the value of the command line parameter in the name of a file being created. The problem I'm having is that the parameter may include a forward... (11 Replies)
Discussion started by: pbmax626
11 Replies
9. Shell Programming and Scripting
i am a beginner, i want to make a program that takes any command line arguments... and print it out in reverse.
ie. if the command line argument is "thanks for helping me"
i want it to output "me helping for thanks" :D
i have tried using the reverse command, but i cant get it working!!
... (3 Replies)
Discussion started by: bshell_1214
3 Replies
10. UNIX and Linux Applications
I need to execute a .ksh from command line. The ksh calls a control file and has 3 parameters. First parameter is a csv file, second the target table in oracle and third parameter is a date parameter.
I am attempting the below from the ksh command line
{code} => testfile.ksh filname.csv... (1 Reply)
Discussion started by: kobe24
1 Replies
LEARN ABOUT DEBIAN
eatmydata
eatmydata(1) General Commands Manual eatmydata(1)
NAME
eatmydata - transparently disable fsync() and other data-to-disk synchronization calls
SYNOPSIS
eatmydata [--] command [ command arguments ... ]
DESCRIPTION
eatmydata runs a command in the environment where data-to-disk synchronization calls (like fsync(), fdatasync(), sync(), msync() and open()
O_SYNC / O_DSYNC flags) have no effect. LD_PRELOAD library libeatmydata overrides respective C library calls with custom functions that
don't trigger synchronization but return success nevertheless.
You may use eatmydata in two ways. In normal mode, just execute eatmydata directly and pass a command-to-be-run and its arguments via com-
mand line. In order to use symlink mode, create a symlink to /usr/bin/eatmydata with the filename (a.k.a basename) of another program in
the PATH and execute eatmydata via that symlink. Then eatmydata will find that program in the PATH and run it in the libeatmydata environ-
ment repassing all command line options.
OPTIONS
Please note that eatmydata does not process any command line options in symlink mode. All command line options will be repassed to the
underlying executable as-is.
command
The command to execute. It may be either a full path or the name of the command in PATH. In case command cannot be found in PATH,
eatmydata will fail.
command arguments
Arbitrary number of arguments to pass to the command being executed.
-- Optional command separator for compatibility with similar utilities. Ignored at the moment.
EXAMPLES
Given PATH is /usr/bin and both /usr/bin/aptitude and /usr/bin/eatmydata are installed, the following:
$ ln -s /usr/bin/eatmydata ./aptitude
$ ./aptitude moo
is equivalent to:
$ eatmydata -- aptitude moo
Therefore, you may use symlink mode to automatically run specific programs in the libeatmydata environment whenever you run them from PATH.
For example, given standard PATH settings, just do:
# ln -s /usr/bin/eatmydata /usr/local/bin/aptitude
and enjoy sync-free aptitude system-wide.
AUTHOR
The eatmydata wrapper around libeatmydata LD_PRELOAD library was written by Modestas Vainius <modax@debian.org>
November 2010 eatmydata(1)