Hi All,
I have a question about file concatenate on unix. I have two file
1 of them like aaa,bbb,ccc,ddd
other one is eee,fff,ggg,hhh
I want to concatenate those file like this position
aaa,bbb,ccc,ddd,eee,fff,ggg,hhh
how can I do this ??
thanks.
Alice (3 Replies)
Hi
I found the following line would concatenate all test_01 test_02 test_03 files into "bigfile".
cat test_* >> bigfile
But, what I'm looking for a way to insert each file names in order when concatenated in "bigfile".
Thank you
samky2005 (2 Replies)
I'm trying to parse COBOL code to combine variables into one string. I have two variable names that get literals moved into them and I'd like to use sed, awk, or similar to find these lines and combine the variables into the final component. These variable names are always VAR1 and VAR2. For... (8 Replies)
Hello,
I have been searching the forum for concatenation based on condition. I have been close enough but not got th exact one.
infile:
-----DB_Name ABC (X,
Y,Z).
DB_Name DEF (T).
DB_Name GHI (U
,V,W).
Desired Output file should be:
---------------------------DB_Name ABC... (8 Replies)
Hi,
I have a file files.txt containing data as below:
abc;xyz
uvw;pqr
123;456
I want to develop strings like below using the above data and write them into another file:
www/xxx/abc/yyy/xyz
www/xxx/uvw/yyy/pqr
www/xxx/123/yyy/456
All this needs to be done through .sh file.
... (4 Replies)
Hi all,
I want the 2nd column of every file in the directory in a single file with the file name as column header.
$cat file1.txt
a b c
d e f
$cat file2.txt
f g h
g h j
$cat file3.txt
a b d
f g h (2 Replies)
I have a CSV file that goes like this:
Name,Group,Email
Max,Group1,max@.com
Dan,Group2,dan@.com
Max,Group3,max@.com
Max,Group4,max@.com
Dan,Group5,dan@.com
Jim,Group6,jim@.comBasically my desired output should be:
Name,Group,Email
Max,Group1|Group3|Group4,max@.com... (6 Replies)
I have about 6000 files of the following format (three simplified examples shown; actual files have variable numbers of columns, but the same number of lines). I would like to concatenate the ID (*Loc*) and data lines, but not the others, as shown below. The result would be one large file (or... (3 Replies)
there can be n number of columns but the number of columns and header name will remain same in all 3 files. Files are tab Delimited.
a.txt
Name 9/1 9/2
X 1 7
y 2 8
z 3 9
a 4 10
b 5 11
c 6 12
b.xt
Name 9/1 9/2
X 13 19
y 14 20
z 15 21
a 16 22
b 17 23
c 18 24 c.txt
Name 9/1 9/2... (14 Replies)
Discussion started by: Nina2910
14 Replies
LEARN ABOUT NETBSD
cat
CAT(1) BSD General Commands Manual CAT(1)NAME
cat -- concatenate and print files
SYNOPSIS
cat [-beflnstuv] [-] [file ...]
DESCRIPTION
The cat utility reads files sequentially, writing them to the standard output. The file operands are processed in command line order. A
single dash represents the standard input, and may appear multiple times in the file list.
The word ``concatenate'' is just a verbose synonym for ``catenate''.
The options are as follows:
-b Implies the -n option but doesn't number blank lines.
-e Implies the -v option, and displays a dollar sign ('$') at the end of each line as well.
-f Only attempt to display regular files.
-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 Implies the -v option, and displays tab characters as '^I' as well.
-u The -u option guarantees that the output is unbuffered.
-v Displays 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 (i.e., 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), hexdump(1), lpr(1), more(1), pr(1), tail(1), view(1), vis(1), fcntl(2)
Rob Pike, "UNIX Style, or cat -v Considered Harmful", USENIX Summer Conference Proceedings, 1983.
STANDARDS
The cat utility is expected to conform to 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! This is performed by the shell before cat is run.
BSD September 23, 2006 BSD