Hello!
I'm trying to find out the total file size of a subset list in a directory. For example, I do not need to know the total file size of all the files in a directory, but I need to know what the total size is of say, "ls -l *FEB08*" in a directory. Is there any easy way of doing this?
... (3 Replies)
Hi, All
I have a huge file which has 450G. Its tab-delimited format is as below
x1 A 50020 1
x1 B 50021 8
x1 C 50022 9
x1 A 50023 10
x2 D 50024 5
x2 C 50025 7
x2 F 50026 8
x2 N 50027 1
:
:
Now, I want to extract a subset from this file. In this subset, column 1 is x10, column 2 is... (3 Replies)
Hi All,
I have some 6000 text files in a directory. My files are named like 1.txt, 2.txt 3.txt and so on until 6000.txt. I want to count the "number of words" in only first 3000 of them. Any suggestions?
I know wc -w can count the number of words in a text file. I am using Red Hat Linux. (3 Replies)
Hi All,
I want to write a script to create flar images on multiple servers. In non zfs filesystem I am using -X option to refer a file to exclude mounts on different servers.
but on ZFS -X option is not working. I want multiple mounts to be ignore on ZFS base system during flarecreate.
I... (0 Replies)
Hello. I was wondering if anyone could help. I have a file containing a large table in the format:
marker1 marker2 marker3 marker4
position1 position2 position3 position4
genotype1 genotype2 genotype3 genotype4
with marker being a name, position a numeric... (2 Replies)
Dear all,
I have a file lik below: n of row=420, n of letters in each row=100000 like below: there is no space between the letters.
what I want is: the 75000th letter to the 85000th letter in each row.
how to do that? thanks a lot!
... (2 Replies)
Hi,
I'd like to swap the columns 1 and 2 of a space-delimited text file but only for the first 1000 rows. How do I go about doing that? Thanks! (1 Reply)
Hello
Could you please help me to find a code that can randomly select 1224 lines from a file of 12240 and make tn output with 1224 line each.
my input is txt file with 12240 lines like :
13474 999003507 0 0 2 -9
13475 999003508 0 0 2 -9
13476 999003509 0 0 1 -9
13477 999003510 0 0 1 -9
... (7 Replies)
Hello Unix experts,
I need a help to create a subset file. I know with cut comand, its very easy to select many different columns, or threshold. But here I have a bit problem as in my data file is big. And I don't want to identify the column numbers or names manually. I am trying to find any... (7 Replies)
In the below awk if I use the attached file as the input, I get no results for TCF4. However, if I just copy that line from the attached file and use that as input I get results for TCF4.
Basically the gene file is a 1 column list that is used to filter $8 of the attached file. When there is a... (9 Replies)
Discussion started by: cmccabe
9 Replies
LEARN ABOUT SUNOS
cat
cat(1) User Commands cat(1)NAME
cat - concatenate and display files
SYNOPSIS
cat [-nbsuvet] [file...]
DESCRIPTION
The cat utility reads each file in sequence and writes it on the standard output. Thus:
example% cat file
prints file on your terminal, and:
example% cat file1 file2 >file3
concatenates file1 and file2, and writes the results in file3. If no input file is given, cat reads from the standard input file.
OPTIONS
The following options are supported:
-n Precede each line output with its line number.
-b Number the lines, as -n, but omit the line numbers from blank lines.
-u The output is not buffered. (The default is buffered output.)
-s cat is silent about non-existent files.
-v Non-printing characters (with the exception of tabs, new-lines and form-feeds) are printed visibly. ASCII control characters
(octal 000 - 037) are printed as ^n, where n is the corresponding ASCII character in the range octal 100 - 137 (@, A, B, C, . . .,
X, Y, Z, [, , ], ^, and _); the DEL character (octal 0177) is printed ^?. Other non-printable characters are printed as M-x,
where x is the ASCII character specified by the low-order seven bits.
When used with the -v option, the following options may be used:
-e A $ character will be printed at the end of each line (prior to the new-line).
-t Tabs will be printed as ^I's and formfeeds to be printed as ^L's.
The -e and -t options are ignored if the -v option is not specified.
OPERANDS
The following operand is supported:
file A path name of an input file. If no file is specified, the standard input is used. If file is `-', cat will read from the
standard input at that point in the sequence. cat will not close and reopen standard input when it is referenced in this
way, but will accept multiple occurrences of `-' as file.
USAGE
See largefile(5) for the description of the behavior of cat when encountering files greater than or equal to 2 Gbyte ( 2**31 bytes).
EXAMPLES
Example 1: Concatenating a file
The following command:
example% cat myfile
writes the contents of the file myfile to standard output.
Example 2: Concatenating two files into one
The following command:
example% cat doc1 doc2 > doc.all
concatenates the files doc1 and doc2 and writes the result to doc.all.
Example 3: Concatenating two arbitrary pieces of input with a single invocation
The command:
example% cat start - middle - end > file
when standard input is a terminal, gets two arbitrary pieces of input from the terminal with a single invocation of cat. Note, however,
that if standard input is a regular file, this would be equivalent to the command:
cat start - middle /dev/null end > file
because the entire contents of the file would be consumed by cat the first time `-' was used as a file operand and an end-of-file condition
would be detected immediately when `-' was referenced the second time.
ENVIRONMENT VARIABLES
See environ(5) for descriptions of the following environment variables that affect the execution of cat: LANG, LC_ALL, LC_CTYPE, LC_MES-
SAGES, and NLSPATH.
EXIT STATUS
The following exit values are returned:
0 All input files were output successfully.
>0 An error occurred.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Availability |SUNWcsu |
+-----------------------------+-----------------------------+
|CSI |enabled |
+-----------------------------+-----------------------------+
|Interface Stability |Standard |
+-----------------------------+-----------------------------+
SEE ALSO touch(1), attributes(5), environ(5), largefile(5), standards(5)NOTES
Redirecting the output of cat onto one of the files being read will cause the loss of the data originally in the file being read. For exam-
ple,
example% cat filename1 filename2 >filename1
causes the original data in filename1 to be lost.
SunOS 5.10 1 Feb 1995 cat(1)