04-12-2008
OFS is the output field separator. Simply you can see an awk script as a loop, it executes the instructions for each line of the input and after the last instruction it reads the next line and so on until the end of the file. Google for "awk tutorial".
Regards
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
hi
i am unable to connect to FTP server.My FTP password contain one special charecter '#'.it might be the problem for connecting.please clarify regarding this special charecter in the password.i need some information about restricted charecters in the shell script.
thanks (5 Replies)
Discussion started by: srivsn
5 Replies
2. Shell Programming and Scripting
we are ftping zipped up files from the development server to the production server daily.The files are in this format filename.dat.20061231.12131.gz
I have to unzip the file (i can do that with gunzip) and then strip out the timestamp after the .dat extension.
I can do something like this
... (4 Replies)
Discussion started by: mervin2006
4 Replies
3. Shell Programming and Scripting
Hi All
I have a requirement where using a script I grep a file for string (KSG/Password in below ) , get the next line which is the password and I need replace the whole line of unknown special charecters (encrypted password) with another line as given below .
As in below i need to get... (12 Replies)
Discussion started by: malavm
12 Replies
4. Shell Programming and Scripting
Hi,
i have a file with contents like below ( any number of entries can be there)
111
222
333
444
555
i need to make another file with single line like below:
111,222,333,444,555 (without ending , )
TIA
Prvn (8 Replies)
Discussion started by: prvnrk
8 Replies
5. Programming
Hello everybody,
I have a problem with a program i'm coding, the thing is that i need the program to check quickly if it receives a response, if not, just go ahead.
My program sends the frame successfully, but it keeps waiting for the response until it receives something. That's what i need to... (2 Replies)
Discussion started by: Zykl0n-B
2 Replies
6. Shell Programming and Scripting
Hey Guys!
I have written a code which combines lots of files into one big file(.csv).
However, each of the original files had headers on the first line, and now that I've combined the files the headers are interspersed throughout the new combined data frame. For example, throughout the data... (21 Replies)
Discussion started by: gd9629
21 Replies
7. UNIX for Dummies Questions & Answers
Hi,
I need to grep for text between " 01/Aug" and " 02/Aug" in a text file.
The awk command usually fails with the error saying "line too long"
Is there other simpler ways to achieve this ? (12 Replies)
Discussion started by: shifahim
12 Replies
8. Shell Programming and Scripting
Hi,
This code works for me for file in $(find /path/to/dir -type f); do tr -d '\r' <$file >temp.$$ && mv temp.$$ $file done
However, i want this code to skip all .class files.
Can you help me with the modified code. (2 Replies)
Discussion started by: mohtashims
2 Replies
9. Shell Programming and Scripting
Hi,
I wish to remove special charecters at the end of each line "^M" from all files under a folder and sub-folders.
I do not seem to have dos2unix or Perl and my OS is Linux mymachine 2.6.32-431.5.1.el6.x86_64 #1 SMP Fri Jan 10 04:11:43 IST 2014 x86_64 x86_64 x86_64 GNU/Linux (8 Replies)
Discussion started by: mohtashims
8 Replies
10. Shell Programming and Scripting
Hi,
Below is my script where i wish to remove '^M' charecters from all files in the directory and sub-directories. Below code which is not able to remove all '^M' characters from all my files in all sub directories.
find properties/* -type f -exec sh -c '
for file do
tr -d '^M' < $file >... (3 Replies)
Discussion started by: mohtashims
3 Replies
JOIN(1) General Commands Manual JOIN(1)
NAME
join - relational database operator
SYNOPSIS
join [ options ] file1 file2
DESCRIPTION
Join forms, on the standard output, a join of the two relations specified by the lines of file1 and file2. If file1 is `-', the standard
input is used.
File1 and file2 must be sorted in increasing ASCII collating sequence on the fields on which they are to be joined, normally the first in
each line.
There is one line in the output for each pair of lines in file1 and file2 that have identical join fields. The output line normally con-
sists of the common field, then the rest of the line from file1, then the rest of the line from file2.
Fields are normally separated by blank, tab or newline. In this case, multiple separators count as one, and leading separators are dis-
carded.
These options are recognized:
-an In addition to the normal output, produce a line for each unpairable line in file n, where n is 1 or 2.
-e s Replace empty output fields by string s.
-jn m Join on the mth field of file n. If n is missing, use the mth field in each file.
-o list
Each output line comprises the fields specified in list, each element of which has the form n.m, where n is a file number and m is a
field number.
-tc Use character c as a separator (tab character). Every appearance of c in a line is significant.
SEE ALSO
sort(1), comm(1), awk(1)
BUGS
With default field separation, the collating sequence is that of sort -b; with -t, the sequence is that of a plain sort.
The conventions of join, sort, comm, uniq, look and awk(1) are wildly incongruous.
7th Edition April 29, 1985 JOIN(1)