Sponsored Content
Top Forums UNIX for Dummies Questions & Answers Unix directory system calls question Post 302531230 by vistastar on Thursday 16th of June 2011 06:43:43 AM
Old 06-16-2011
Writing a directory means creating or deleting files in that directory. So you need not a write() system call. you use creat() or remove(), etc...
 

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

System Calls

What does the system call "dup" do? What is the difference between dup and dup2 I have a fair idea of what it does but I am confused when its coming down to the exact details... Please help me!:confused: (2 Replies)
Discussion started by: clickonline1
2 Replies

2. UNIX for Dummies Questions & Answers

System calls for cp and mv

Which system calls are made for operations cp and mv (2 Replies)
Discussion started by: gaurava99
2 Replies

3. UNIX for Dummies Questions & Answers

System calls?

open, creat, read, write, lseek and close Are they all primitive? :confused: *Another Question: is there a different between a system call, and an i/o system call? (2 Replies)
Discussion started by: PlunderBunny
2 Replies

4. Solaris

System calls ?

where can i find the differences in System calls between solaris and aix? also is it possible to find a comprehensive list of them? (1 Reply)
Discussion started by: TECHRAMESH
1 Replies

5. Programming

System calls

why user is not able to switch from user to kernel mode by writing the function whose code is identical to system call. (1 Reply)
Discussion started by: joshighanshyam
1 Replies

6. BSD

system calls

what is the functions and relationship between fork,exec,wait system calls as i am a beginer just want the fundamentals. (1 Reply)
Discussion started by: sangramdas
1 Replies

7. Programming

Copy a file using UNIX-system calls

#include<unistd.h> #include<sys/types.h> #include<sys/stat.h> #include<fcntl.h> #include<stdlib.h> int main( int argc,char *argv ) { char buf; int sourcefile,destfile,n; if(argc!=3) { write(STDOUT_FILENO,"prgm1 <sourcefile> <destination file>\n",50); ... (6 Replies)
Discussion started by: c_d
6 Replies

8. UNIX for Dummies Questions & Answers

About system calls.

Hi all, I am new here . I want to know about system call in detail. As system calls are also function .How system identifies it.:) (2 Replies)
Discussion started by: vishwasrao
2 Replies

9. UNIX for Dummies Questions & Answers

system calls in C

Hello, how would i be able to call ps in C programming? thanks, ---------- Post updated at 01:39 AM ---------- Previous update was at 01:31 AM ---------- here's the complete system call, ps -o pid -p %d, getpit() (2 Replies)
Discussion started by: l flipboi l
2 Replies

10. UNIX for Dummies Questions & Answers

System calls in UNIX

Hi i am very new to programming in UNIX and don't understand the difference between a system call and a normal function call. Also can I implement system calls from within a program? If so could someone please give me an example of a system call from within a program. Lastly, when creating a... (1 Reply)
Discussion started by: bjhum33
1 Replies
mktrashcan(1)						      General Commands Manual						     mktrashcan(1)

NAME
mktrashcan, rmtrashcan, shtrashcan - Attaches, detaches, or shows a trashcan directory SYNOPSIS
/usr/sbin/mktrashcan trashcan directory... /usr/sbin/rmtrashcan directory... /usr/sbin/shtrashcan directory... OPERANDS
Specifies the directory that contains files that were deleted from attached directories. Whenever you delete a file in the specified directory, the file system automatically moves the file to the trashcan directory. Specifies the directory that you attach to a trashcan directory. DESCRIPTION
The trashcan utilities (mktrashcan and rmtrashcan) enable you to attach or detach an existing directory, which you specify as a trashcan directory, to any number of directories within the same fileset. A trashcan directory stores the files that are deleted with the unlink system call. For instance, you can use the mktrashcan utility to attach a trashcan directory called /usr/trashcan to one or more directories; thereafter, when you delete a file from one of the attached directories, the file system moves the file to the /usr/trashcan directory. Note that when more than one directory shares attachment to a trashcan directory, files with the same file name can overwrite each other in the trashcan directory. If you mistakenly delete a file, use the mv command to return the file from the /usr/trashcan directory to its original directory. When you enter shtrashcan at the system prompt, the system shows the trashcan directory, if one exists, for the directory you specified. It is important that trashcan directories have correct access permissions. If the permissions are too restrictive, then it may be impossi- ble to remove files from the directories that are attached to the trashcan directory. In general, all users and groups that expect to use the trashcan directory need write permission to the directory. If unexpected "permission denied" errors occur when deleting files that are in a directory attached to a trashcan directory, use the chmod command to change the permissions on the trashcan directory. RESTRICTIONS
The directory and trashcan directories must be in the same fileset; however, you can attach the trashcan directory to any directory within the fileset. EXAMPLES
The following example creates and attaches a trashcan directory, /usr/trashcan, to two directories, /usr/ray and /usr/projects/sql/test, which are in the same fileset. The chmod command adds write permission for all users and groups on the new trashcan directory. % mkdir /usr/trashcan % chmod a+w /usr/trashcan % mktrashcan /usr/trashcan /usr/ray /usr/projects/sql/test To attach the trashcan directory, /usr/trashcan, to all subdirectories in the /usr directory, enter: % mktrashcan /usr/trashcan /usr/* New subdirectories that you add beneath the /usr directory are not attached to the trashcan directory until you attach them. Also, the mktrashcan utility distinguishes between directories and files, attaching only directories to the trashcan directory. Note that an attached directory produces an EDUPLICATE_DIRS (-1165) error when /usr/trashcan is itself in the directory path you attach to (as in the previous example). You can ignore this error message. SEE ALSO
advfs(4), mkfset(8), showfsets(8) mktrashcan(1)
All times are GMT -4. The time now is 04:17 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy