As far as I can see this section of code reads all the output data files to find out if they contain a '*/' and then appends a '*/' if there isn't one present.
Quote:
for m_file_name in `echo ${m_a_d92_files[*]}`
do
if [[ `grep "*/" ${m_file_name} | wc -l` = 0 ]]
then
echo "*/" >> ${m_file_name}
fi
done
Earlier in the script we apparently ignored the last line '*/' in the input stream (not proven that that bit of code works).
Providing that '*/' was properly ignored in the input stream (an area of the script which could be improved by using grep -v \^'*/' instead of the very first cat) it is impossible for a '*/' to appear in any of the output files. We can therefore halve the run time by not re-reading the output data before appending the '*/'.
Code:
for m_file_name in `echo ${m_a_d92_files[*]}`
do
echo "*/" >> ${m_file_name}
done
Hi,
how does the Unix File System perform with large directories (containing ~30.000 files)?
What kind of structure is used for the organization of a directory's content, linear lists, (binary) trees?
I hope the description 'Unix File System' is exact enough, I don't know more about the file... (3 Replies)
Hi.
I want to attach a .xls or .dat file while sending mail thru unix.
I have come across diff attachments sending options, but allthose embeds the content in the mail. I want the attachement to be send as such.
Please help me out.
regards
Diwakar (1 Reply)
Hi All,
I have a .dat file named test.dat where I have stored some process IDs.
Now I need to pick a process ID, one by one and then fire kill -9 for each of those. The logic should be:
1. open file <filename.dat>
2. read until last line of file
3. if process ID is found fire kill -9... (5 Replies)
I have a .dat file in unix and it keeps failing file validation on line x. How do I delete a data string from a .dat file in UNIX?
I tried the following:
sed -e 'data string' -e file name
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Background
-------------
The Unix flavor can be any amongst Solaris, AIX, HP-UX and Linux. I have below 2 flat files.
File-1
------
Contains 50,000 rows with 2 fields in each row, separated by pipe.
Row structure is like Object_Id|Object_Name, as following:
111|XXX
222|YYY
333|ZZZ
... (6 Replies)
Hi,
The source system has created the file in the dat format and put into the linux directory as mentioned below. I want to do foloowing things.
a) Delete the Line started with <CR><LF> in the record
b)Also line
...........................................................<CR><LF>
... (1 Reply)
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Around 8000 keywords(which will be in the file $keywordfile) needed to be searched inside those files.
If a keyword is found in a file..I have to insert the filename,extension,catagoery,keyword,occurrence... (8 Replies)
Hi Guys,
I have a simple request. I have a file in w3c format. Each file has 2 header lines. Rest of the lines are 16 columns each. They are separated by Tab. I need to discard the first 2 lines and then write each column of the txt file into a seperate column of CSV. I tried the command below... (1 Reply)
i have two files , one is var.txt and another res.dat file
var.txt contains informaton like below
date,request,sales,item
20171015,1,123456,216
20171015,1,123456,217
20171015,2,345678,214
20171015,3,456789,218
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Discussion started by: archana25
1 Replies
LEARN ABOUT X11R4
zgrep
ZGREP(1) General Commands Manual ZGREP(1)NAME
zgrep - search possibly compressed files for a regular expression
SYNOPSIS
zgrep [ grep_options ] [ -e ] pattern filename...
DESCRIPTION
Zgrep invokes grep on compressed or gzipped files. These grep options will cause zgrep to terminate with an error code:
(-[drRzZ]|--di*|--exc*|--inc*|--rec*|--nu*). All other options specified are passed directly to grep. If no file is specified, then the
standard input is decompressed if necessary and fed to grep. Otherwise the given files are uncompressed if necessary and fed to grep.
If the GREP environment variable is set, zgrep uses it as the grep program to be invoked.
EXIT CODE
2 - An option that is not supported was specified.
AUTHOR
Charles Levert (charles@comm.polymtl.ca)
SEE ALSO grep(1), gzexe(1), gzip(1), zdiff(1), zforce(1), zmore(1), znew(1)ZGREP(1)