The file permissions certainly have nothing to do with it. It'd tell you "permission denied" if you didn't have access. The sledgehammer 777 is an extremely bad habit that creates far more problems than it ever solves.
tr -d ought to be able to do it. It may not be able to understand '[:alnum:]' though, you might have to just spell it out for it.
I have AIX 5.1
I was wondering how to remove a file name with a space in it Say {tb lsv.csv} ? When I use the {rm} command if you have a space it thinks it is a new file. So it looks for {tb} and {lsv.csv} instead of the name as a whole.
Thanks in advance
Dave
By the way guys and gals the... (5 Replies)
Hi,
I have a shell scripting. This will take 7 digit number in each line and add 7 digit number with next subsequent lines ( normal addition ).
Eg:
0000001
0000220
0001235
0000022
0000023
...........
.........
........
Like this i am having around 1500000 records. After adding... (23 Replies)
Hi - I tried to remove ^M in a delimited file using "tr -d "\r" and "sed 's/^M//g'", but it does not work quite well. While the ^M is removed, the format of the record is still cut in half, like
a,b, c
c,d,e
The delimited file is generated using sh script by outputing a SQL query result to... (7 Replies)
Hi All,
I want to remove last word from a line using Vi.
Do we have any vi command for that.
line : ss dd ff gg
i have to run some vi command which can delete gg from the line
Thanks,
Ravi Sadani (4 Replies)
In LINUX(CentOS, RedHat) is there a way to have the banner statement appear before the logon instead of after the logon? In UNIX and Windows the banner appears before a person actually logs on, what I'm seeing in LINUX is that it appears after the login(ftp, telnet, SSH).
Thanks (0 Replies)
Hi,
I have a file with rows like below delimited with pipe (|)
I want to remove all the leading and trailing white space from each and every fields keeping the delimiter intact.
I have tired this
sed 's/*//g;s/*$//g'
but the result is incorrect
it is removing a whitespace from... (6 Replies)
Hello everyone, I'm in need of some assistance. I'm currently enrolled in an introductory UNIX shell programming course and, well halfway through the semester, we are receiving our first actual assignment. I've somewhat realized now that I've fallen behind, and I'm working to get caught up, but for... (1 Reply)
Hi,
Below is a scattered representation of numbers .
1 2
11 22
11 22
1 2
1 2
11 22
1 2
11 22
I need to display only the following sequence "" and delete of the remainder from the output. The output should look like (2 Replies)
Hi All,
I am using the below script which has awk command, but it is not returing the expected result. can some pls help me to correct the command.
The below script sample.ksh should give the result if the value of last 4 digits in the variable NM matches with the variable value DAT. The... (7 Replies)
Hi Everybody! First post! Totally noobie.
I'm using the terminal to read a poorly formatted book.
The text file contains, in the middle of paragraphs, hyphenation to split words that are supposed to be on multiple pages. It looks ve -- ry much like this.
I was hoping to use grep -v " -- "... (5 Replies)
Discussion started by: AxeHandle
5 Replies
LEARN ABOUT OPENDARWIN
access
ACCESS(2) BSD System Calls Manual ACCESS(2)NAME
access -- check access permissions of a file or pathname
SYNOPSIS
#include <unistd.h>
int
access(const char *path, int mode);
DESCRIPTION
The access() function checks the accessibility of the file named by path for the access permissions indicated by mode. The value of mode is
the bitwise inclusive OR of the access permissions to be checked (R_OK for read permission, W_OK for write permission and X_OK for exe-
cute/search permission) or the existence test, F_OK. All components of the pathname path are checked for access permissions (including
F_OK).
The real user ID is used in place of the effective user ID and the real group access list (including the real group ID) are used in place of
the effective ID for verifying permission.
Even if a process has appropriate privileges and indicates success for X_OK, the file may not actually have execute permission bits set.
Likewise for R_OK and W_OK.
RETURN VALUES
If path cannot be found or if any of the desired access modes would not be granted, then a -1 value is returned; otherwise a 0 value is
returned.
ERRORS
Access to the file is denied if:
[ENOTDIR] A component of the path prefix is not a directory.
[ENAMETOOLONG] A component of a pathname exceeded {NAME_MAX} characters, or an entire path name exceeded {PATH_MAX} characters.
[ENOENT] The named file does not exist.
[ELOOP] Too many symbolic links were encountered in translating the pathname.
[EROFS] Write access is requested for a file on a read-only file system.
[ETXTBSY] Write access is requested for a pure procedure (shared text) file presently being executed.
[EACCES] Permission bits of the file mode do not permit the requested access, or search permission is denied on a component of the
path prefix. The owner of a file has permission checked with respect to the ``owner'' read, write, and execute mode bits,
members of the file's group other than the owner have permission checked with respect to the ``group'' mode bits, and all
others have permissions checked with respect to the ``other'' mode bits.
[EFAULT] Path points outside the process's allocated address space.
[EIO] An I/O error occurred while reading from or writing to the file system.
[EINVAL] An invalid value was specified for mode.
SEE ALSO chmod(2), stat(2)STANDARDS
The access() function conforms to ISO/IEC 9945-1:1990 (``POSIX.1'').
CAVEAT
Access() is a potential security hole and should never be used.
4th Berkeley Distribution April 1, 1994 4th Berkeley Distribution