hi
i need to select a few columns of two txt files and write it to a new file. there is one common field for both of these files.
plz help me in this
thanks in advance (4 Replies)
Hi,
I want to select columns from multiple files and combine them in one file. The files are simulation-data-files with 23 columns each and about 50 rows. I now use:
cut -f 11 Sweep?wing-30?scale=0.?0?fan2?.txt | pr -3 | awk '{printf("\n%s\t%s\t%s",$1,$2,$3)}' > ../Data_Processed/output.txtI... (1 Reply)
Hi ,
I have a typical situation. I have 4 files and with different headers (number of headers is varible ).
I need to make such a merged file which will have headers combined from all files (comman coluns should appear once only).
For example -
File 1
H1|H2|H3|H4
11|12|13|14
21|22|23|23... (1 Reply)
Hello,
I have a number of tab delimited data files consists of two columns. Like that:
File1
800.000000 0.002744
799.000000 0.002517
798.000000 0.002836
797.000000 0.002553
FIle2
800.000000 0.000261
799.000000 0.000001
798.000000 0.000551
797.000000 0.000275
File3... (19 Replies)
Hi,
I have two text files that I would like to merge/join. I would like to join them if the first columns of both text files match and the second column of the first text file matches the third column of the second text file.
Example input:
First file:
1334 10 0 0 1 5.2
1334 12 0 0 1 4.5... (4 Replies)
Respected Members.
Hello.
This is my first post in the forum. I will try to follow all the rules as prescribed by the forum. In case of non-compliance, I request you to kindly give me some more time to understand and abide by them.
I am working on two files. I wish to merge the two files... (1 Reply)
Respected Members.
Hello.
This is my first post in the forum. I will try to follow all the rules as prescribed by the forum. In case of non-compliance, I request you to kindly give me some more time to understand and abide by them.
I am working on two files. I wish to merge the two files... (6 Replies)
Hello,
I have some tab delimited text files with a three header rows. The headers look like, (sorry the tabs look so messy).
index group Name input input input input input input input input input input input... (9 Replies)
Hi,
I am facing issues while accomplishing below task.
We have two files Test1.txt and Test2.txt. We have to match 1st column of Test1.txt file with 2nd column of Test2.txt and then merge 2nd file with the 1st file. In the output we should select column 1 and 2 from the 1st file and column 1... (5 Replies)
Discussion started by: Prathmesh
5 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