Visit Our UNIX and Linux User Community


How to read and write directory or file contents in c++ ?


 
Thread Tools Search this Thread
Top Forums Programming How to read and write directory or file contents in c++ ?
# 1  
Old 09-26-2007
How to read and write directory or file contents in c++ ?

Dear Friends,

I m beginner unix programmer. I want to know, how to read and write directory or file contents in c++ ?
# 2  
Old 09-28-2007
I recommend you to look at code of ls.
It is open source. If you are using open soure OS, source of ls should come in the distributive.

Anyway there is good explanation and links to source: ls - Wikipedia, the free encyclopedia

Understanding ls is very good way to start doing what you want.

About file contents, there are good functions for that, for example fopen.
# 3  
Old 09-28-2007
Quote:
Originally Posted by namrata5
read and write directory or file contents in c++ ?
Same as in C really.

opendir/readdir/closedir to read directories.

open/creat/read/write/lseek/close to read and write files.
# 4  
Old 09-28-2007
There is no API to write directory metadata - the kernel does all of it. open, close, unlink, chown, chmod etc. all ultimately result in changes to metadata. What you are calling "write to directories"

Previous Thread | Next Thread
Test Your Knowledge in Computers #928
Difficulty: Medium
64-bit versions of the Unix time stamp will cease to work at 15:30:08 UTC on Sunday, 14 December 2922770265960.
True or False?

10 More Discussions You Might Find Interesting

1. UNIX for Beginners Questions & Answers

Checking if the directory has read and write permission

logMsg='Started by '${USER} LOG_MESSAGE "${logMsg}" resultCode=$? if ]; then return ${resultCode} fi touch ${FILELISTPATH} resultCode=$? if ]; then logMsg='failed to create file list:'${FILELISTPATH} LOG_ERROR "${logMsg}" CUSTOM_PREPROCESS ${FATAL} ... (2 Replies)
Discussion started by: raka123
2 Replies

2. UNIX for Dummies Questions & Answers

Trying To Write File Contents To Specfic .csv Cell

Hi, I'm attempting to write the entire contents of a file to a specific .csv cell. So far have only a nawk one liner that will write a value into a specific .csv cell. Trying to use man page but can't seem to get any farther. Any help would be appreciated. nawk -v r=2 -v c=3 -v val=5 -F,... (7 Replies)
Discussion started by: jimmyf
7 Replies

3. UNIX for Dummies Questions & Answers

Write terminal contents into a one file in UNIX

Hi guys, How to write terminal contents into a file in Unix operating system Actually I created GUI by using Gtk2-perl. I want to display data on GUI whatever the contents writing on terminal. So which command I have to use and where that command to be run I mean in shell script or Perl... (2 Replies)
Discussion started by: kiran425
2 Replies

4. Shell Programming and Scripting

Replace partial contents of file with contents read from other file

Hi, I am facing issue while reading data from a file in UNIX. my requirement is to compare two files and for the text pattern matching in the 1st file, replace the contents in second file by the contents of first file from start to the end and write the contents to thrid file. i am able to... (2 Replies)
Discussion started by: seeki
2 Replies

5. Shell Programming and Scripting

Write array contents to file

Hi, I have a bash script that currently holds some data. I am trying to write all the contents to a file called temp.txt. I am using echo ${array} > temp.txt The problem that I am experiencing is that the elements are being written horizontally in the file. I want them written... (5 Replies)
Discussion started by: Filter500
5 Replies

6. Shell Programming and Scripting

how to read contents of file?

I have made a script something like this. I want it to read the contents of either file or directory but 'cat' and 'ls' is not working. Can anyone help me? I am a newbie in scripting so dont know much about it. I also dont know how can i put my code separatly on this forum #!/bin/bash echo... (9 Replies)
Discussion started by: nishrestha
9 Replies

7. Solaris

add a ftp user with read and write permissions on a directory

hi all how I can create an ftp user in solaris 10 and have read and write permission on a directory. Thanks. (1 Reply)
Discussion started by: luisfja
1 Replies

8. Shell Programming and Scripting

Read contents from a file

Hi Friends, I am new to this forum. Just struck up with a logic. I have a csv file seperated by ":" (colons). This csv file contains hostname and groups as follows: HOSTNAME:VT Group SGSGCT2AVPX001:Team1 SGSGCT2AVPX003:Team2 SGSGCT2AVPX005:Team2 PHMNCTTAVPX001:Team3 I want to... (2 Replies)
Discussion started by: dbashyam
2 Replies

9. UNIX for Dummies Questions & Answers

About read,write & execute permissons of a directory

Hi all, I want to know differences between read,write & execute permissons given to directory. Thanx in advance. (6 Replies)
Discussion started by: vishwasrao
6 Replies

10. Shell Programming and Scripting

Remove spaces from first field, and write entire contents into other text file

Hi all, I have searched and found various threads about removing spaces from a field within a text file. Unfortunately, I have not found exactly what I'm looking for, nor am I adept enough to modify what I've found into what I need. I use the following command to remove the first line... (3 Replies)
Discussion started by: carriehoff
3 Replies

Featured Tech Videos