I have a file:
Fred
Fred
Fred
Jim
Fred
Jim
Jim
If sort is executed on the listed file, shouldn't the output be?:
Fred
Fred
Fred
Fred
Jim
Jim
Jim (3 Replies)
Using the last, uniq, sort and cut commands, determine how many times the different users have logged in.
I know how to use the last command and cut command...
i came up with last | cut -f1 -d" " | uniq
i dont know if this is right, can someone please help me... thanks (1 Reply)
Does anyone have a quick and dirty way of performing a sort and uniq in perl?
How an array with data like:
this is bkupArr BOLADVICE_VN
this is bkupArr MLT6800PROD2A
this is bkupArr MLT6800PROD2A
this is bkupArr BOLADVICE_VN_7YR
this is bkupArr MLT6800PROD2A
I want to sort it... (4 Replies)
Input File is :
-------------
25060008,0040,03,
25136437,0030,03,
25069457,0040,02,
80303438,0014,03,1st
80321837,0009,03,1st
80321977,0009,03,1st
80341345,0007,03,1st
84176527,0047,03,1st
84176527,0047,03,
20000735,0018,03,1st
25060008,0040,03,
I am using the following in the script... (5 Replies)
Hello,
I have a large data file:
1234 8888 bbb
2745 8888 bbb
9489 8888 bbb
1234 8888 aaa
4838 8888 aaa
3977 8888 aaa
I need to remove duplicate lines (where the first column is the duplicate). I have been using:
sort file.txt | uniq -w4 > newfile.txt
However, it seems to keep the... (11 Replies)
Hi All,
I have a text file with the format shown below. Some of the records are duplicated with the only exception being date (Field 15). I want to compare all duplicate records using subscriber number (field 7) and keep only those records with greater date.
... (1 Reply)
I have a flatfile A.txt
2012/12/04 14:06:07 |trees|Boards 2, 3|denver|mekong|mekong12
2012/12/04 17:07:22 |trees|Boards 2, 3|denver|mekong|mekong12
2012/12/04 17:13:27 |trees|Boards 2, 3|denver|mekong|mekong12
2012/12/04 14:07:39 |rain|Boards 1|tampa|merced|merced11
How do i sort and get... (3 Replies)
Hi again,
I have files with the following contents
datetime,ip1,port1,ip2,port2,number
How would I find out how many times ip1 field shows up a particular file? Then how would I find out how many time ip1 and port 2 shows up?
Please mind the file may contain 100k lines. (8 Replies)
Hi All,
Below the actual file which i like to sort and Uniq -u
/opt/oracle/work/Antony/Shell_Script> cat emp.1st
2233|a.k. shukula |g.m. |sales |12/12/52 |6000
1006|chanchal singhvi |director |sales |03/09/38 |6700... (8 Replies)
Discussion started by: Antony Ankrose
8 Replies
LEARN ABOUT NETBSD
linkat
LINK(2) BSD System Calls Manual LINK(2)NAME
link -- make a hard file link
LIBRARY
Standard C Library (libc, -lc)
SYNOPSIS
#include <unistd.h>
int
link(const char *name1, const char *name2);
int
linkat(int fd1, const char *name1, int fd2, const char *name2, int flags);
DESCRIPTION
The link() function call atomically creates the specified directory entry (hard link) name2 with the attributes of the underlying object
pointed at by name1. If the link is successful: the link count of the underlying object is incremented; name1 and name2 share equal access
and rights to the underlying object.
If name1 is removed, the file name2 is not deleted and the link count of the underlying object is decremented.
name1 must exist for the hard link to succeed and both name1 and name2 must be in the same file system. name1 may not be a directory unless
the caller is the super-user and the file system containing it supports linking to directories.
When operating on a symlink, link() resolves the symlink and creates a hard link on the target. linkat() will do the same if
AT_SYMLINK_FOLLOW is set in flags, but it will link on the symlink itself if the flag is clear.
At the moment, linkat() is partially implemented. It will return ENOSYS for fd1 and fd2 values different than AT_FDCWD.
RETURN VALUES
Upon successful completion, a value of 0 is returned. Otherwise, a value of -1 is returned and errno is set to indicate the error.
ERRORS
link() will fail and no link will be created if:
[EACCES] A component of either path prefix denies search permission, or the requested link requires writing in a directory with a
mode that denies write permission.
[EDQUOT] The directory in which the entry for the new link is being placed cannot be extended because the user's quota of disk
blocks on the file system containing the directory has been exhausted.
[EEXIST] The link named by name2 does exist.
[EFAULT] One of the pathnames specified is outside the process's allocated address space.
[EIO] An I/O error occurred while reading from or writing to the file system to make the directory entry.
[ELOOP] Too many symbolic links were encountered in translating one of the pathnames.
[EMLINK] The link count of the file named by name1 would exceed {LINK_MAX}.
[ENAMETOOLONG] A component of a pathname exceeded {NAME_MAX} characters, or an entire path name exceeded {PATH_MAX} characters.
[ENOENT] A component of either path prefix does not exist, or the file named by name1 does not exist.
[ENOSPC] The directory in which the entry for the new link is being placed cannot be extended because there is no space left on the
file system containing the directory.
[ENOTDIR] A component of either path prefix is not a directory.
[EOPNOTSUPP] The file system containing the file named by name1 does not support links.
[EPERM] The file named by name1 is a directory and the effective user ID is not super-user, or the file system containing the file
does not permit the use of link() on a directory.
[EROFS] The requested link requires writing in a directory on a read-only file system.
[EXDEV] The link named by name2 and the file named by name1 are on different file systems.
SEE ALSO symlink(2), unlink(2)STANDARDS
The link() function conforms to ISO/IEC 9945-1:1990 (``POSIX.1'').
BUGS
linkat() is partially implemented.
BSD January 12, 1994 BSD