05-28-2008
Why does this smell like homework? Primarily because your question is of such a very basic nature that the typical newbie wouldn't even be able to associate those 4 items to form a question.
Use man cat and man touch to get your answers.
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1. Shell Programming and Scripting
Hi I have a simple code that I want to execute.
out=out.txt
for f in `cat list.txt | head -1`; do
echo $f >> $out
echo "sleep 5" >> $out
done
cat list.txt | head -1
wget -q -O - 'http://test.com:15100/cgi-bin/search
cat out.txt
wget
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-q
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-O (10 Replies)
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2. Shell Programming and Scripting
cat myname.txt
John Doe I
John Doe II
John Doe III
-----------------------------------------------------------------------
for i in `cat myname.txt`
do
echo This is my name: $i >> thi.is.my.name.txt
done
-----------------------------------------------------------------------
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3. UNIX for Dummies Questions & Answers
Hi All,
This is actually a good interview question.
On linux, the permissions and group for 'shutdown' and 'cat' is the same.
-rwxr-xr-x 1 root root 18K 2008-05-21 10:43 shutdown
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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
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5. UNIX for Dummies Questions & Answers
Hi there,
I have the following problem. I have a csv file which looks like
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Im trying to use cat and awk to calculate the total space, then display it using the print command. But something in my script is not correct?
cat | awk '{print$1}' | sort -n | grep -v used | awk '{sum += $1} END { p
rint sum;}'
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Can we concatenate say,
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I have two files as below
1.txt
AA 123
CC 145
DD 567
2.txt
AA 111
YY 128
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FF 222
DD 777
ZZ 875
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9. UNIX for Dummies Questions & Answers
Hi,
When I was analyzing the code I got below line.
cat - << 'EOF' >> ${FILE PATH}
I surfed net to understand but I couldn't get what is about.
Please help me out. (2 Replies)
Discussion started by: stew
2 Replies
cat(1) General Commands Manual cat(1)
Name
cat - concatenate and print data
Syntax
cat [ -b ] [ -e ] [ -n ] [ -s ] [ -t ] [ -u ] [ -v ] file...
Description
The command reads each file in sequence and displays it on the standard output. Therefore, to display the file on the standard output you
type:
cat file
To concatenate two files and place the result on the third you type:
cat file1 file2 > file3
To concatenate two files and append them to a third you type:
cat file1 file2 >> file3
If no input file is given, or if a minus sign (-) is encountered as an argument, reads from the standard input file. Output is buffered in
1024-byte blocks unless the standard output is a terminal, in which case it is line buffered. The utility supports the processing of 8-bit
characters.
Options
-b Ignores blank lines and precedes each output line with its line number.
-e Displays a dollar sign ($) at the end of each output line.
-n Precedes all output lines (including blank lines) with line numbers.
-s Squeezes adjacent blank lines from output and single spaces output.
-t Displays non-printing characters (including tabs) in output. In addition to those representations used with the -v option, all tab
characters are displayed as ^I.
-u Unbuffers output.
-v Displays non-printing characters (excluding tabs and newline) as the ^x. If the character is in the range octal 0177 to octal 0241,
it is displayed as M-x. The delete character (octal 0177) displays as ^?. For example, is displayed as ^X.
See Also
cp(1), ex(1), more(1), pr(1), tail(1)
cat(1)