Hi,
I did a df|awk| command and it returns a percentage "94%",
how could I only get the integer part
"94" out of it, so I can compare it to another number,
I knwo that I have to pipe it to sth, but "grep " did not work, it still give me number WITH the percentage, does someone know what... (3 Replies)
I have the files logged in the file system with names in the format of : filename_ordernumber_date_time
eg:
file_1_12012007_1101.txt
file_2_12022007_1101.txt
file_1_12032007_1101.txt
I need to find out all the files that are logged multiple times with same order number. In the above eg, I... (1 Reply)
Hi Experts,
Is there a way to compare 2 files by columns and print matching cases.
I have 2 files as below, I want cases where col1 and col2 in f1 matches col1 and col2 in f2 to be printed as output. The separator is space. I want the output to have col1 col2 col 3 from both files printed... (7 Replies)
Guys,
I tried searching on the internet and I couldn't get the answer for this problem. I have 3 files. First 2 fields of all of them are of same type, say they come from various databases but first two fields in the 3 files means the same.
I need to verify the entries that are not present... (4 Replies)
I have a log file that I want to archive out as it reaches 100MB. I am using the following to get the file size into a variable but get the error "line 5:
filesize=$(wc -c < logfile.log)
if
then
echo "is greater than 100M"
else
echo "is less than 100M"
fi
I'm sure there's something... (2 Replies)
I have a file named file.txt that looks as follows
//class1.txt
45
234
67
89
90
//class2.txt
456
34
78
89
120
class1 and class2.txt are the names of files in a folder named folder1.
The content of class1.txt file in folder1
67 9
89 5
234 9The content of class2.txt file in... (1 Reply)
Hello,
I have a script that checks every file with a specific extension in a specific directory. The file names contain some numerical output and I am recording the file names with the best n outcomes.
The script finds all files in the directory with the extension .out.txt and uses awk to... (12 Replies)
Hi, I have two files roughly 1200 fields in length for each row, sorted on the 2nd field. I need to compare based on that 2nd column between file1 and file2 and print lines that exist in both files into separate files (I can't guarantee that every line in file1 is in file2).
Example:
File1: ... (1 Reply)
Discussion started by: origon
1 Replies
LEARN ABOUT OSX
io::seekable
IO::Seekable(3pm) Perl Programmers Reference Guide IO::Seekable(3pm)NAME
IO::Seekable - supply seek based methods for I/O objects
SYNOPSIS
use IO::Seekable;
package IO::Something;
@ISA = qw(IO::Seekable);
DESCRIPTION
"IO::Seekable" does not have a constructor of its own as it is intended to be inherited by other "IO::Handle" based objects. It provides
methods which allow seeking of the file descriptors.
$io->getpos
Returns an opaque value that represents the current position of the IO::File, or "undef" if this is not possible (eg an unseekable
stream such as a terminal, pipe or socket). If the fgetpos() function is available in your C library it is used to implements getpos,
else perl emulates getpos using C's ftell() function.
$io->setpos
Uses the value of a previous getpos call to return to a previously visited position. Returns "0 but true" on success, "undef" on
failure.
See perlfunc for complete descriptions of each of the following supported "IO::Seekable" methods, which are just front ends for the
corresponding built-in functions:
$io->seek ( POS, WHENCE )
Seek the IO::File to position POS, relative to WHENCE:
WHENCE=0 (SEEK_SET)
POS is absolute position. (Seek relative to the start of the file)
WHENCE=1 (SEEK_CUR)
POS is an offset from the current position. (Seek relative to current)
WHENCE=2 (SEEK_END)
POS is an offset from the end of the file. (Seek relative to end)
The SEEK_* constants can be imported from the "Fcntl" module if you don't wish to use the numbers 0 1 or 2 in your code.
Returns 1 upon success, 0 otherwise.
$io->sysseek( POS, WHENCE )
Similar to $io->seek, but sets the IO::File's position using the system call lseek(2) directly, so will confuse most perl IO operators
except sysread and syswrite (see perlfunc for full details)
Returns the new position, or "undef" on failure. A position of zero is returned as the string "0 but true"
$io->tell
Returns the IO::File's current position, or -1 on error.
SEE ALSO
perlfunc, "I/O Operators" in perlop, IO::Handle IO::File
HISTORY
Derived from FileHandle.pm by Graham Barr <gbarr@pobox.com>
perl v5.16.2 2012-08-26 IO::Seekable(3pm)