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 have a file which may have 'n' number of columns
1 222 fafda 32 afdaf 4343 4343
234 43fdaf 4343 fdd fdfd fdfd fdd fdfd fdfd
fdfd fdfd fdfd fdd fdfd fdfd
need to concatenate the columns with... (3 Replies)
Hi,
I have a file1.txt like this:
and a file2.txt like this:
I wat only append file2.txt to file1.txt
and to have something like this:
How could i do ? (2 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
$cat file3.txt
a b d
f g h (2 Replies)
hi all
could you please help me to concatenate two colomns and separate them by "-"
the two colomns to concatenate are colomuns 1 and 3 of a very bif file
clomn 1 is chr, 2 is snp and 3 is bp
the new colomn is chr_B
input file :
1 rs1111 10583
1 rs1891 10611
1 rs1807 ... (13 Replies)
Hi Friends,
I have come across some files where some of the columns don not have data.
Key, Data1,Data2,Data3,Data4,Data5
A,5,6,,10,,
A,3,4,,3,,
B,1,,4,5,,
B,2,,3,4,,
If we see the above data on Data5 column do not have any row got filled. So remove only that column(Here Data5) and... (4 Replies)
I have a CSV file that goes like this:
Name,Group,Email
Max,Group1,max@.com
Dan,Group2,dan@.com
Max,Group3,max@.com
Max,Group4,max@.com
Dan,Group5,dan@.com
Jim,Group6,jim@.comBasically my desired output should be:
Name,Group,Email
Max,Group1|Group3|Group4,max@.com... (6 Replies)
Hello,
I want to concatenate 2-columns by 2-columns separated by colon. How can I do so? For example, I have a text file containing 6 columns separated by tab. I want to concatenate column 1 and 2; column 3 and 4; column 5 and 6, respectively, and put a colon in between.
input file:
1 0 0 1... (10 Replies)
Discussion started by: huiyee1
10 Replies
LEARN ABOUT OPENDARWIN
cat
CAT(1) BSD General Commands Manual CAT(1)NAME
cat -- concatenate and print files
SYNOPSIS
cat [-benstuv] [file ...]
DESCRIPTION
The cat utility reads files sequentially, writing them to the standard output. The file operands are processed in command-line order. If
file is a single dash ('-') or absent, cat reads from the standard input. If file is a UNIX domain socket, cat connects to it and then reads
it until EOF. This complements the UNIX domain binding capability available in inetd(8).
The options are as follows:
-b Number the non-blank output lines, starting at 1.
-e Display non-printing characters (see the -v option), and display a dollar sign ('$') at the end of each line.
-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 The -u option guarantees that the output is unbuffered.
-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.
DIAGNOSTICS
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), more(1), pr(1), sh(1), tail(1), vis(1), zcat(1), 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 [-benstv] 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!
BSD September 15, 2001 BSD