05-12-2005
Read a file line by line
I am relatively new to UNIX.
I am having a flat file with around 20,000 lines in it.
Basically, it is a dump of a database table with tab character as a delimeter.
I want to read the file row by row and process every row.
Any suggestions about achieving it efficiently??
Thanks
VEN
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Hi,
I have gps receiver log..its giving readings .like below
Trying 127.0.0.1...
Connected to localhost.
Escape character is '^]'.
GPSD,R=1
$GPGSV,3,1,11,08,16,328,40,11,36,127,00,28,33,283,39,20,11,165,00*71... (3 Replies)
Discussion started by: gudivada213
3 Replies
2. Shell Programming and Scripting
I am using the while-loop to read a file.
The file has lines with null-terminated strings (words, actually.)
What I have by that reading - just a first word up to '\0'!
I need to have whole string up to 'new line' - (LF, 10#10, 16#A)
What I am doing wrong?
#make file 'grb' with... (6 Replies)
Discussion started by: alex_5161
6 Replies
3. Shell Programming and Scripting
Hi,
i have file which contains data as below(Only sample shown, it may contain more data similar to the one shown here)
i need to read this file line by line and generate an output file like the one below
i.e based on N value the number of MSISDNs will vary, if N=1 then the following... (14 Replies)
Discussion started by: aemunathan
14 Replies
4. Shell Programming and Scripting
Hi ,
I am trying to write an shell, which reads a text file (from a location) having a list of numbers of strictly 5 digits only ex: 33144
Now my script will check :
1) that each entry is only 5 digits & numeric only, no alphabets, & its not empty.
2)then it executes a shell script called... (8 Replies)
Discussion started by: new_to_shell
8 Replies
5. Shell Programming and Scripting
Hi All,
I'm trying to figure out which are the trusted-ips and which are not using a script file.. I have a file named 'ip-list.txt' which contains some ip addresses and another file named 'trusted-ip-list.txt' which also contains some ip addresses. I want to read a line from... (4 Replies)
Discussion started by: mjavalkar
4 Replies
6. Shell Programming and Scripting
Hello,
I need a program that read a file line by line and prints out lines 1, 2 & 3 after an empty line... An example of entries in the file would be:
SRVXPAPI001 ERRO JUN24 07:28:34 1775
REASON= 0000, PROCID= #E506 #1065: TPCIPPR, INDEX= 003F
... (8 Replies)
Discussion started by: Ferocci
8 Replies
7. Shell Programming and Scripting
I have a test file that I want to read and insert only certain lines into the
the table based on a filter.
1. Rread the log file 12 Hours back Getdate() -12 Hours
2. Extract the following information on for lines that say "DUMP is
complete"
A. Date
B. Database Name
C.... (2 Replies)
Discussion started by: JolietJake
2 Replies
8. Shell Programming and Scripting
Hi All,
Am trying to write wrapper shell/bash script on a utility tool for which i need to pass 2 files as arugment to execute utility tool.
Wraper script am trying is to do with above metion 2 files.
utility tool accepts :
a. userinfo file : which contains username
b. item file : which... (2 Replies)
Discussion started by: Optimus81
2 Replies
9. Shell Programming and Scripting
Hi all,
I have a log file say Test.log that gets updated continuously and it has data in pipe separated format. A sample log file would look like:
<date1>|<data1>|<url1>|<result1>
<date2>|<data2>|<url2>|<result2>
<date3>|<data3>|<url3>|<result3>
<date4>|<data4>|<url4>|<result4>
What I... (3 Replies)
Discussion started by: pat_pramod
3 Replies
10. Shell Programming and Scripting
Hello,
I'm works on Ubuntu server
My goal : I would like to read file line per line, but i want to started at the end of file.
Currently, I use instructions :
while read line;
do
COMMAND
done < /var/log/apache2/access.log
But, the first line, i don't want this. The file is long... (5 Replies)
Discussion started by: Fuziion
5 Replies
LEARN ABOUT PHP
fbsql_data_seek
FBSQL_DATA_SEEK(3) 1 FBSQL_DATA_SEEK(3)
fbsql_data_seek - Move internal result pointer
SYNOPSIS
bool fbsql_data_seek (resource $result, int $row_number)
DESCRIPTION
Moves the internal row pointer of the FrontBase result associated with the specified result identifier to point to the specified row num-
ber.
The next call to fbsql_fetch_row(3) would return that row.
PARAMETERS
o $
result -A result identifier returned by fbsql_query(3) or fbsql_db_query(3).
o $row_number
- The row number. Starts at 0.
RETURN VALUES
Returns TRUE on success or FALSE on failure.
EXAMPLES
Example #1
fbsql_data_seek(3) example
<?php
$link = fbsql_pconnect("localhost", "_SYSTEM", "secret")
or die("Could not connect");
fbsql_select_db("samp_db")
or die("Could not select database");
$query = "SELECT last_name, first_name FROM friends;";
$result = fbsql_query($query)
or die("Query failed");
// fetch rows in reverse order
for ($i = fbsql_num_rows($result) - 1; $i >=0; $i--) {
if (!fbsql_data_seek($result, $i)) {
printf("Cannot seek to row %d
", $i);
continue;
}
if (!($row = fbsql_fetch_object($result)))
continue;
echo $row->last_name . $row->first_name . "<br />
";
}
fbsql_free_result($result);
?>
PHP Documentation Group FBSQL_DATA_SEEK(3)