If it's saying bad file descriptor it probably means it. Without seeing your actual code, I can't tell why you're closing a bad file descriptor, you should print the FD's to stderr when you open a pipe, and print them to stderr again when you try and close it to see what's going on. But I have some further comments.
fork() is pointless. Disks don't multithread. Forcing it to read 19 directories at once will make your disk run 19 times slower. You already benefit from the caching and read-ahead built into the OS, too.
Second, there's a system function for what you want to do, ftw() It operates depth-first, so every time you see a new second-level folder, you'll know everything afterwards will be within that folder until it leaves.
Last edited by Corona688; 03-26-2019 at 03:18 PM..
how can I find cpu usage memory usage swap usage and
I want to know CPU usage above X% and contiue Y times and memory usage above X % and contiue Y times
my final destination is monitor process
logical volume usage above X % and number of Logical voluage above
can I not to... (3 Replies)
Hi,
I am working on AIX 5.3 . I have client-server program which is in ProC.while sending packet to server i am getting error as broken pipe and program exiting.
please help?/? (1 Reply)
Hello,
Could any one help me how to find the Disk Usage for all the files in the running directory and the sub directories without the disk usage of the directory. I mean to say, i need only the file names without the size of the directories.
See, i used this command
du -a .|sort... (3 Replies)
All,
I am using the below code
The C code :
if ((fp2=fopen(szout_fname,"r"))==NULL)
{
sprintf(stream_ptr1,"cat %s | sort -t, -rn -k 11,11 | awk -F\",\" '{ \
if ( \$3 ==\"%s\" ) {print... (0 Replies)
hi guys, o have a big error
in this program but i cant solve
someone ?!
#include <stdlib.h>
#include <stdio.h>
#include <unistd.h>
#include <string.h>
int main(int argc, char *argv){
int cont = 2, posicao;
char geraArquivo= "|cat>>", espaco=" ";
char nomeArquivo, comando,... (11 Replies)
Hello
while doing sftp over server "A" , i am getting a broken pipe error i.e
cat: write error: Broken pipe
what does that mean? please let me know if you want any other info on this.. (3 Replies)
Hi ,
I am using below code to list the 6th,7th and 8th field of the file
ls -lrt test | awk '{print $6,$7,$8}'
output:
Nov 21 19:34
Now the problem here is that I want to do it without the usage of pipes as its now allowed in my production environment
Please let me know... (6 Replies)
I'm new to scripting, and this forum has been invaluable in helping me out. I'm hoping I can get some personal help now though.
I have a korn script that takes a list of servers and either telnets or sshs into it (only some are set up for ssh). What I'm doing now is trying to telnet first, and... (10 Replies)
Hi,
I have a script that runs a tar command to standard out then pipes to a gzip:
tar cfE - * | gzip -c > OUT.gz
At the moment, even if the tar fails (e.g. because of lack of disk space), the gzip still runs successfully.
Is there a way to make the whole line exit with a non-zero error... (6 Replies)
Discussion started by: Catullus
6 Replies
LEARN ABOUT HPUX
du
du(1) General Commands Manual du(1)NAME
du - summarize disk usage
SYNOPSIS
type] [name]...
DESCRIPTION
The command gives the number of 512-byte blocks allocated for all files and (recursively) directories within each directory and file speci-
fied by the name operands. The block count includes the indirect blocks of the file. A file with two or more links is counted only once.
If name is missing, the current working directory is used.
By default, generates an entry only for the name operands and each directory contained within those hierarchies.
By default, when a symbolic link is encountered on the command line or in the file hierarchy, will count the size of the symbolic link
rather than the file referenced by the link, and will not follow the link to another portion of the file hierarchy.
Options
The command recognizes the following options:
Print entries for each file encountered
in the directory hierarchies in addition to the normal output.
For each name operand that is a directory for which file system swap has been enabled, print the number of blocks the swap
system is currently using.
If a symbolic link is specified on the command line,
will count the size of the file or file hierarchy referenced by the link. Unlike the option, it will not follow sym-
bolic links encountered during the traversal of the directory hierarchy.
Gives the block count in 1024-byte blocks.
If a symbolic link is specified on the command line or
encountered during the traversal of a file hierarchy, will count the size of the file or file hierarchy referenced by
the link.
Print messages about directories that cannot be read,
files that cannot be accessed, and so on. is normally silent about such conditions.
Print only the grand total of disk usage
for each of the specified name operands.
Restrict reporting to file systems of the specified
type. (Example values for type are and so on.) Multiple options can be specified. Disk usage is normally reported
for the entire directory hierarchy below each of the given name operands.
Restrict reporting to only those files
that have the same device as the file specified by the name operand. Disk usage is normally reported for the entire
directory hierarchy below each of the given name operands.
According to the standards, specifying more than one of the mutually-exclusive options and will not be considered an error. The last
option specified will determine the behavior of the utility.
EXAMPLES
Display disk usage for the current working directory and all directories below it, generating error messages for unreadable directories:
Display disk usage for the entire file system except for any or mounted file systems:
Display disk usage for files on the root volume only. No usage statistics are collected for any other mounted file systems:
WARNINGS
Block counts are incorrect for files that contain holes.
SEE ALSO df(1M), bdf(1M), quot(1M), standards(5).
STANDARDS CONFORMANCE du(1)