cat is not a command for creating files. cat is a method for concatenating files. (see man cat.) It creates files the same way as any command capable of producing any output whatsoever -- shell redirection allows you to put its output into a file.
touch on the other hand is a command for creating new files(and updating their timestamps).
Hi everybody in the forum,
I want to create an empty file of say some 1MB ,i mean at the command line itself.How is this possible??????EEK! (4 Replies)
hey, I'm trying to create the command that will create a file named user.txt that contains the output of the command cut -d: -f1,5 /etc/passwd, and displays itself afterwards.
I don't know how to bridge cat > user.txt with cut -d: -f1,5 /etc/passwd, or how display it afterwards. Any help would... (2 Replies)
Hello,
So I sorted my file as I was supposed to:
sort -n -r -k 2 -k 1 file1 | uniq > file2
and when I wrote
> cat file2
in the command line, I got what I was expecting, but in the script itself
...
sort -n -r -k 2 -k 1 averages | uniq > temp
cat file2
It wrote a whole... (21 Replies)
Hi,
I am using Cygwin.I created a new file and type into it using cat > newfile. When I open this using vi editor, it contains loads of extra control characters.
Whats happening? (1 Reply)
Hi,
While editing a small text file with cat command i pressed ctrl-d to send eof, instead of coming out of cat command it echoed ^D to the screen. Same thing is happening to ctrl-c. After googling i found this is because of trap.
The problem is i m stuck in editing mode and cannot get the... (3 Replies)
Hello...
Is it possible that we can change the format of the values we entered in a text file using cat?
Like for example, I will create a text file names.txt using cat and as I save the names and view the text file... the format will be like this
... (5 Replies)
Hello All,
I have a bash script and in it at some point I call an Expect Script that does some stuff and saves its
output in a ".txt" file.
Example "/path/to/my/file/Expect_Output.txt" file: notice the 2nd line is empty in the file...
Data for Host-1 (192.168.1.110)
Checking the... (2 Replies)
I use the cat command to concatenate text files, but one of the rows I was expecting doesn't display in the output file. Is there a verbose mode\logging mechanism for the cat command to help me investigate where the lines I was expecting are going??
cat 7760-001_1_*_06_*.txt | grep -v... (1 Reply)
Hi,
Recently I got a .txt file from Mac user. when I try to open it in my Ubuntu machine using cat command it is not displaying any content of file however I can see the content using vi.
Anyone know How to see its content using cat as I have to process it in my shell script.
Thanks in... (4 Replies)
Hi All,
I am having command to run which will take argument as input file. Right now we are creating the input file by cat and executing the command
ftptransfer -i input file
cat >input file
file1
file2
cntrl +d
Is there a way I can do that in a single command like
... (1 Reply)
Discussion started by: arunkumar_mca
1 Replies
LEARN ABOUT XFREE86
cmap
CMAP(5) File Formats Manual CMAP(5)NAME
cmap - format of .cmap files (color maps)
DESCRIPTION
Color-map files define the mapping between eight-bit color numbers and red, green and blue intensities used for those numbers. They are
read by Magic as part of system startup, and also by the :load and :save commands in color-map windows. Color-map file names usually have
the form x.y.z.cmapn, where x is a class of technology files, y is a class of displays, z is a class of monitors, and n is a version number
(currently 1). The version number will change in the future if the formap of color-map files ever changes. Normally, x and y correspond to
the corresponding parts of a display styles file. For example, the color map file mos.7bit.std.cmap1 is used today for most nMOS and CMOS
technology files using displays that support at least seven bits of color per pixel and standard-phosphor monitors. It corresponds to the
display styles file mos.7bit.dstyle5.
Color-map files are stored in ASCII form, with each line containing four decimal integers separated by white space. The first three inte-
gers are red, green, and blue intensities, and the fourth field is a color number. For current displays the intensities must be integers
between 0 and 255. The color numbers must increase from line to line, and the last line must have a color number of 255. The red, green,
and blue intensities on the first line are used for all colors from 0 up to and including the color number on that line. For other lines,
the intensities on that line are used for all colors starting one color above the color number on the previous line and continuing up and
through the color number on the current line. For example, consider the color map below:
255 0 0 2
0 0 255 3
255 255 255 256
This color map indicates that colors 0, 1, and 2 are to be red, color 3 is to be blue, and all other colors are to be white.
SEE ALSO magic(1), dstyle(5)4th Berkeley Distribution CMAP(5)