11-28-2010
Counting the number of readable, writable, and executable items in a directory
Hello, I'm writing a script in sh in which the first command line argument is a directory. from that, i'm suppose to count the number of readable, writable, and executable items in the directory. I know using $1 represents the directory, and ls would display all the items in the directory, and that ls | wc -l would count the number of items. I'm uncertain as to how to filter ls so that only the readable/writable/executable files are shown and counted, and since I don't know if i'm the user, group, or other I cant check the permissions.
could someone show me how to do this? Thanks
9 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
Some simple questions from a simple man.
If i wanted to count the number of files contained within a directory, say /tmp would ls -l /tmp ¦ wc -l suffice and will it be accurate?
second one: How would i check the number of files with a certain string in the filename, in the same directory.
... (2 Replies)
Discussion started by: iamalex
2 Replies
2. UNIX for Dummies Questions & Answers
This should be so simple.. I have folder with about 27 subfolders in it, each folder has a number of fonts in it.. how do I get the total number of fonts for all subfolders? (2 Replies)
Discussion started by: glev2005
2 Replies
3. Shell Programming and Scripting
Hi All,
To start with, I have been reading this site for years, Unfortunately I do not consider myself versed well enough with scripts to provide useful help to others. The Blind cannot lead the Blind!
Many of you have provided me with brain food and solutions over the years without even... (4 Replies)
Discussion started by: Festus Hagen
4 Replies
4. Programming
Hi,
Can anyone tell me how to find out how many bits a c executable was compiled in?
I am trying to do some investigation of running 32bit programs in 64bit systems. (1 Reply)
Discussion started by: Leion
1 Replies
5. UNIX for Dummies Questions & Answers
Help Needed !
Can we count number of folders of specific date in a directory, even if directory has folders of different dates.
Please reply as soon as possible. (1 Reply)
Discussion started by: vishal_215
1 Replies
6. Shell Programming and Scripting
This is my first ever post... please help! :o
I have two columns....here is part of the file...
12, 46798
6692, 46799
5710, ... (3 Replies)
Discussion started by: pelhabuan
3 Replies
7. Shell Programming and Scripting
I am trying to display the output of ls and also print the number of characters in EVERY file name. This is what I have so far:
#!/bin/sh
for x in `ls`; do
echo The number of characters in x | wc -m
done
Any help appreciated (1 Reply)
Discussion started by: LinuxNubBrah
1 Replies
8. Shell Programming and Scripting
So I have a loop that stated if a directory exists or not. If it does it prints the number of files within that directory. I use this code...
result=`(ls -l . | egrep -c '^-')`
However, no matter which directory I input, it outputs the number "2"
What is wrong here? (4 Replies)
Discussion started by: itech4814
4 Replies
9. What is on Your Mind?
In the past few days have I have done a lot of code cleanup work in various categories, including faster page loading and bug fixes:
Move countless inline style directives to external CSS stylesheets for key pages (faster page loading)
Fixed bug in member panel going between desktop and... (6 Replies)
Discussion started by: Neo
6 Replies
LEARN ABOUT FREEBSD
strmode
STRMODE(3) BSD Library Functions Manual STRMODE(3)
NAME
strmode -- convert inode status information into a symbolic string
LIBRARY
Standard C Library (libc, -lc)
SYNOPSIS
#include <string.h>
void
strmode(mode_t mode, char *bp);
DESCRIPTION
The strmode() function converts a file mode (the type and permission information associated with an inode, see stat(2)) into a symbolic
string which is stored in the location referenced by bp. This stored string is eleven characters in length plus a trailing NUL.
The first character is the inode type, and will be one of the following:
- regular file
b block special
c character special
d directory
l symbolic link
p fifo
s socket
w whiteout
? unknown inode type
The next nine characters encode three sets of permissions, in three characters each. The first three characters are the permissions for the
owner of the file, the second three for the group the file belongs to, and the third for the ``other'', or default, set of users.
Permission checking is done as specifically as possible. If read permission is denied to the owner of a file in the first set of permis-
sions, the owner of the file will not be able to read the file. This is true even if the owner is in the file's group and the group permis-
sions allow reading or the ``other'' permissions allow reading.
If the first character of the three character set is an ``r'', the file is readable for that set of users; if a dash ``-'', it is not read-
able.
If the second character of the three character set is a ``w'', the file is writable for that set of users; if a dash ``-'', it is not
writable.
The third character is the first of the following characters that apply:
S If the character is part of the owner permissions and the file is not executable or the directory is not searchable by the owner, and
the set-user-id bit is set.
S If the character is part of the group permissions and the file is not executable or the directory is not searchable by the group, and
the set-group-id bit is set.
T If the character is part of the other permissions and the file is not executable or the directory is not searchable by others, and the
``sticky'' (S_ISVTX) bit is set.
s If the character is part of the owner permissions and the file is executable or the directory searchable by the owner, and the set-
user-id bit is set.
s If the character is part of the group permissions and the file is executable or the directory searchable by the group, and the set-
group-id bit is set.
t If the character is part of the other permissions and the file is executable or the directory searchable by others, and the ``sticky''
(S_ISVTX) bit is set.
x The file is executable or the directory is searchable.
- None of the above apply.
The last character will always be a space.
SEE ALSO
chmod(1), find(1), stat(2), getmode(3), setmode(3)
HISTORY
The strmode() function first appeared in 4.4BSD.
BSD
July 28, 1994 BSD