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Questions tagged [stat]

The stat(2) system call on POSIX systems. For statistics, use the statistics instead.

The stat(2) system call is used to retrieve information about a named file (or directory).

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For statistics, use the tag instead.

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stat() error 'No such file or directory' when file name is returned by readdir()

I'm not able to identify the error thrown by stat. The below program reads all files in a directory and prints the file name: DIR *dp; struct dirent *dirp; struct stat sb; if((dp = opendir(argv[1]))==NULL) { perror("can't open…
John Eipe
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Why do file permissions show different in Python and bash?

From Python: >>> import os >>> s = os.stat( '/etc/termcap') >>> print( oct(s.st_mode) ) **0o100444** When I check through Bash: $ stat -f "%p %N" /etc/termcap **120755** /etc/termcap Why does this return a different result?
FlowRaja
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R : stat_smooth groups (x axis)

I have a Database, and want to show a figure using stat_smooth. I can show the avg_time vs Scored_Probabilities figure, which looks like this: c <- ggplot(dataset1, aes(x=Avg.time, y=Scored.Probabilities)) c + stat_smooth() But when changing…
Jeffery Chen
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Get file attributes (hidden, readonly, system, archive) in Python

Just started learning Python. How can i get a status of file's attributes in Python? I know that os.chmod(fullname, stat.S_IWRITE) delete readonly attribute, but how can i get status without changing it? I need to get all of the attributes of…
Evgeny Gerbut
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How can I get the high-res mtime for a symbolic link?

I want to reproduce the output of ls --full-time from a Perl script to avoid the overhead of calling ls several thousand times. I was hoping to use the stat function and grab all the information from there. However, the timestamp in the ls output…
kbro
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php clearstatcache() performance and parameters explanation

i'm using filemtime for fingerprinting external resources in html, like: I noticed a significant delay between the effective updating and the timestamp returned by…
Giona
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In Posix how is type dev_t getting used?

What I am after is the meaning of such type and what interface can use it. It is explained in Posix spec that dev_t is used for device IDs. However, what device id means for any object described by a path, which can be a file, a directy, a fifo or a…
Mengfei Murphy
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Using stat() after fopen() to Avoid TOCTOU Problems?

Title says it all: can one use stat() after fopen() to avoid Time of Check to Time of Use (TOCTOU) race conditions? Some details: I am writing a C program that only reads files, but needs to error properly when asked to read a directory. As of right…
Gavin D. Howard
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How to get the center and scale after using the scale function in R

It seems a silly question, but I have searched on line, but still did not find any sufficient reply. My question is: suppose we have a matrix M, then we use the scale() function, how can we extract the center and scale of each column by writing a…
陈见聪
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Inconsistency in modified/created/accessed time on mac

I'm having trouble using os.utime to correctly set the modification time on the mac (Mac OS X 10.6.2, running Python 2.6.1 from /usr/bin/python). It's not consistent with the touch utility, and it's not consistent with the properties displayed in…
Seth Johnson
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What are st_flags (user defined flags) for a file Mac OS X?

I am trying to detect when Dropbox is busy updating a file in a user's Dropbox in Mac OS X. By running stat(1) or stat(2) on a file, I see that the user defined flags for file (st_flags) are normally 0x40, but while Dropbox is updating the file…
Jerry Krinock
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Determining if two file paths point to same file under Linux / C?

Under Linux, I have two file paths A and B: const char* A = ...; const char* B = ...; I now want to determine, should I open(2) them both... int fda = open(A, ...); int fdb = open(B, ...); ...will I get two filehandles open to the same file in the…
Andrew Tomazos
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Windows and ctime / st_ctime

Does Windows offer anything like POSIX stat's st_ctime field, which gives the timestamp of last metadata change? Background: I have some data files that I'd like to check if they've been modified since a particular timestamp. Checking the modified…
Josh Kelley
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What is lstat() alternative in windows?

In linux, when stat() is used with broken link files, it fails with -1. So I used lstat() which succeeded. For the same case in windows, _stat() fails with broken shortcuts, but there is no _lstat() in windows. Please help to find the alternative…
Gautham Polisetty
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Binutils stat illegal option -c

I use stat two times in my script once to find the file files permissions and once to find the size of the file. `stat -c %A "$directory/$file"` `stat -c %s "$directory/$file"` I am using OSX 10.7 and directory and file are variable of the…
Joe Tyman
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