Pls use code tags as advised.
So - the headers are identical across all files, and all except first should be removed. Data should be ordered according to their files' creation time sequence. Try this:
Remove the -r option to ls if you want newest files first.
Pls note: the field separator | that you mention I can see only in the headers given, not in the data lines.
Hi Gurus,
I am new to unix and need your help to make a shell script. I have a requirement, would appreciate if you could please help me on it:
Requirement:
-------------
I will pass 2 parameters in shell script 1). Directory name say errors 2). file extension say .log
First of all this... (4 Replies)
I had mount from server A to server B. I am able to access the files present under server B. I can create new files on server B, but i am not able to edit the files which are already present. When i saw the permissions on those files it is 777.
can some one tell me why i am not able to edit... (2 Replies)
# ls -l
total 10
-rw-r--r-- 1 dummy2 other 140 Jun 19 21:37 local.cshrc
-rw-r--r-- 1 dummy2 other 136 Jun 19 21:37 local.cshrc~
-rw-r--r-- 1 dummy2 other 157 Jun 19 21:37 local.login
-rw-r--r-- 1 dummy2 other 178 Jun 19 21:37 local.profile... (6 Replies)
Hi all,
I am looking for a script which renames all the files from the present directory.
Eg.:
In unix directory contains the below files
linux001.txt
linux002.txt
linux003.txt
......
.......
Now the files should be renamed to
unix001.txt
unix002.txt
unix003.txt
Could anyone... (8 Replies)
Hi
I am unable to find files, those are present anywhere in the same directory tree, based on the creation date. I need to find the files with their path, as I need to create them in another location and move them. I need some help with a script that may do the job.
Please help (2 Replies)
Hi frnds,
My requirement is I have a zip file with name say eg: test_ABC_UH_ccde2a_awdeaea_20150422.zip
within that there are subdirectories on each directory we again have .zip files and in that we have files like mama20150422.gz and so on.
Iam in need of a bash script so that it unzips... (0 Replies)
Hey Guys,
I want to merge all files (Apache Tomcat Access Logs) for a particular date say "Aug 24" to be merged into a single file.
Is there any quick hack for that ?
$ ls -alrth access_log2016-08-*|grep "Aug 24"
-rw-rw-r--. 1 tomcat tomcat 16M Aug 24 00:00... (8 Replies)
Hello,
I have 40 data files where the first three columns are the same (in theory) and the 4th column is different. Here is an example of three files,
file 2: A_f0_r179_pred.txt
Id Group Name E0
1 V N(,)'1 0.2904
2 V N(,)'2 0.3180
3 V N(,)'3 0.3277
4 V N(,)'4 0.3675
5 V N(,)'5 0.3456
... (8 Replies)
Hello Folks,
Looking for a script which can keep doing ls to the directories and once file landed to the directory then ,read the files do further calculation and exit.
Kindly guide.
Regards,
Sadique (3 Replies)
Discussion started by: sadique.manzar
3 Replies
LEARN ABOUT FREEBSD
join
JOIN(1) BSD General Commands Manual JOIN(1)NAME
join -- relational database operator
SYNOPSIS
join [-a file_number | -v file_number] [-e string] [-o list] [-t char] [-1 field] [-2 field] file1 file2
DESCRIPTION
The join utility performs an ``equality join'' on the specified files and writes the result to the standard output. The ``join field'' is
the field in each file by which the files are compared. The first field in each line is used by default. There is one line in the output
for each pair of lines in file1 and file2 which have identical join fields. Each output line consists of the join field, the remaining
fields from file1 and then the remaining fields from file2.
The default field separators are tab and space characters. In this case, multiple tabs and spaces count as a single field separator, and
leading tabs and spaces are ignored. The default output field separator is a single space character.
Many of the options use file and field numbers. Both file numbers and field numbers are 1 based, i.e., the first file on the command line is
file number 1 and the first field is field number 1. The following options are available:
-a file_number
In addition to the default output, produce a line for each unpairable line in file file_number.
-e string
Replace empty output fields with string.
-o list
The -o option specifies the fields that will be output from each file for each line with matching join fields. Each element of list
has either the form file_number.field, where file_number is a file number and field is a field number, or the form '0' (zero), repre-
senting the join field. The elements of list must be either comma (',') or whitespace separated. (The latter requires quoting to
protect it from the shell, or, a simpler approach is to use multiple -o options.)
-t char
Use character char as a field delimiter for both input and output. Every occurrence of char in a line is significant.
-v file_number
Do not display the default output, but display a line for each unpairable line in file file_number. The options -v 1 and -v 2 may be
specified at the same time.
-1 field
Join on the field'th field of file1.
-2 field
Join on the field'th field of file2.
When the default field delimiter characters are used, the files to be joined should be ordered in the collating sequence of sort(1), using
the -b option, on the fields on which they are to be joined, otherwise join may not report all field matches. When the field delimiter char-
acters are specified by the -t option, the collating sequence should be the same as sort(1) without the -b option.
If one of the arguments file1 or file2 is '-', the standard input is used.
EXIT STATUS
The join utility exits 0 on success, and >0 if an error occurs.
COMPATIBILITY
For compatibility with historic versions of join, the following options are available:
-a In addition to the default output, produce a line for each unpairable line in both file1 and file2.
-j1 field
Join on the field'th field of file1.
-j2 field
Join on the field'th field of file2.
-j field
Join on the field'th field of both file1 and file2.
-o list ...
Historical implementations of join permitted multiple arguments to the -o option. These arguments were of the form
file_number.field_number as described for the current -o option. This has obvious difficulties in the presence of files named 1.2.
These options are available only so historic shell scripts do not require modification and should not be used.
SEE ALSO awk(1), comm(1), paste(1), sort(1), uniq(1)STANDARDS
The join command conforms to IEEE Std 1003.1-2001 (``POSIX.1'').
BSD July 5, 2004 BSD