Dear unix gurus,
I have a data file that looks something like this ...
x y x y x y x y x y
0 3836 30 3915 60 5984 90 7388 120 8385
150 9038 180 9453 210 9745 240 9906 270 9962
300 9953 330 9915 350 9887 ... (22 Replies)
Hello,
I'm new to awk. I've 2 files where H stands for header and T for trailer. The number following T gives the record count in a file.
file 1 looks like this:
H|A|B|C
1|2|3
1|2|4
2|3|5
T|3
file 2 looks like this:
H|A|B|C
4|5|6
7|8|9
T|2
Need to merge the above 2 files such... (2 Replies)
Hi,
I would like to seek for methods to do selective extraction of line froma file. The scenario as follows:
I have a file with content:
message a
received on 11:10:00
file size: 10 bytes
send by abc
message b
received on 11:20:00
file size: 10 bytes
send by abc (3 Replies)
Hi,
i have file1 which looks like:
x1 y1 z1
x2 y2 z2
...(and so on)
and file2 which looks like:
a11 a12 a13
a21 a22 a23
a31 a32 a33
and i want to replace file1 with the following values:
x1' y1' z1'
x2' y2' z2'
...(and so on) (2 Replies)
Hi,
This is something that probably it is more difficult to explain than to do.
I have two files e.g.
FILE1
A15 8.3102E+00 3.2000E-04
A15 8.5688E+00 4.3000E-05
B13 5.1100E-01 1.9960E+00
B16 5.1100E-01 2.3000E-03
B16 8.6770E-01 1.0000E-07
B16 9.8693E-01 3.4000E-05... (4 Replies)
Hi
I have 3 directories
indexes_with_ts
indexes_without_ts
process_indexes
in each directories it contains *.sql
how do I accomplish this:
for all the files found in indexes_without_ts, copy the corresponding file in indexes_with_ts to process_indexes.
i.e.
for... (2 Replies)
Hi,
I have two files (file1.txt, file2.txt) in which, I would like to multiply all the values in file1 with the first row value of file2, file1 * second row value of file2, file1 * third row value of file2 and so on.
Below are my sample data.
file1.txt file2.txt ... (6 Replies)
Hi,
I have 2 ASCII files, say
file1
AAAAA 3.465830E-12
BBBBB 4.263280E-08
CCCCC 1.113320E-17
DDDDD 0.000000E+00
...
file2 with as many lines as file1
3.932350E-12
1.194380E-07
4.901480E-17
0.000000E+00
3.921180E-40 (3 Replies)
Hi, I am trying to selectively merge two files based on keys reported in the 1st column.
File1:
#file1-header1
file1-header2
111 qwe rtz uio
198 asd fgh jkl
165 yxc
789 poi uzt rew
89 lkj
File2:
#file2-header2
file2-header2
165 ghz nko2 ... (2 Replies)
Discussion started by: dovah
2 Replies
LEARN ABOUT FREEBSD
cat
CAT(1) BSD General Commands Manual CAT(1)NAME
cat -- concatenate and print files
SYNOPSIS
cat [-belnstuv] [file ...]
DESCRIPTION
The cat utility reads files sequentially, writing them to the standard output. The file operands are processed in command-line order. If
file is a single dash ('-') or absent, cat reads from the standard input. If file is a UNIX domain socket, cat connects to it and then reads
it until EOF. This complements the UNIX domain binding capability available in inetd(8).
The options are as follows:
-b Number the non-blank output lines, starting at 1.
-e Display non-printing characters (see the -v option), and display a dollar sign ('$') at the end of each line.
-l Set an exclusive advisory lock on the standard output file descriptor. This lock is set using fcntl(2) with the F_SETLKW command.
If the output file is already locked, cat will block until the lock is acquired.
-n Number the output lines, starting at 1.
-s Squeeze multiple adjacent empty lines, causing the output to be single spaced.
-t Display non-printing characters (see the -v option), and display tab characters as '^I'.
-u Disable output buffering.
-v Display non-printing characters so they are visible. Control characters print as '^X' for control-X; the delete character (octal
0177) prints as '^?'. Non-ASCII characters (with the high bit set) are printed as 'M-' (for meta) followed by the character for the
low 7 bits.
EXIT STATUS
The cat utility exits 0 on success, and >0 if an error occurs.
EXAMPLES
The command:
cat file1
will print the contents of file1 to the standard output.
The command:
cat file1 file2 > file3
will sequentially print the contents of file1 and file2 to the file file3, truncating file3 if it already exists. See the manual page for
your shell (e.g., sh(1)) for more information on redirection.
The command:
cat file1 - file2 - file3
will print the contents of file1, print data it receives from the standard input until it receives an EOF ('^D') character, print the con-
tents of file2, read and output contents of the standard input again, then finally output the contents of file3. Note that if the standard
input referred to a file, the second dash on the command-line would have no effect, since the entire contents of the file would have already
been read and printed by cat when it encountered the first '-' operand.
SEE ALSO head(1), more(1), pr(1), sh(1), tail(1), vis(1), zcat(1), fcntl(2), setbuf(3)
Rob Pike, "UNIX Style, or cat -v Considered Harmful", USENIX Summer Conference Proceedings, 1983.
STANDARDS
The cat utility is compliant with the IEEE Std 1003.2-1992 (``POSIX.2'') specification.
The flags [-belnstv] are extensions to the specification.
HISTORY
A cat utility appeared in Version 1 AT&T UNIX. Dennis Ritchie designed and wrote the first man page. It appears to have been cat(1).
BUGS
Because of the shell language mechanism used to perform output redirection, the command ``cat file1 file2 > file1'' will cause the original
data in file1 to be destroyed!
The cat utility does not recognize multibyte characters when the -t or -v option is in effect.
BSD January 29, 2013 BSD