I have the following script that greps lines containing "AT" from data files data1.hsq through data1000.hsq, then cuts their second column and puts in data files called perm1 through perm1000.
I want to modify the script so that instead of putting the data in separate data files perm1 through perm1000, it concatenates them into a single data file. So essentially the same effect as using cat to concatenate perm1 through perm1000. How do I go about doing that? Thanks!
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 guys i have written a script which takes the options given to him and execute itself accordingly.
for example
if a script name is doctortux then executing doctortux without option should made doctortux to be executed in automatic mode i.e. doctortux -a
or if a doctortux is needed to run in... (4 Replies)
Hi,
I've a logging function in bourne shell, flog() which logs the first argument passed to it. How can I pass arguments to this function from a file, like
cat filename | sed '...filtering...' | flog
or
cat filename | sed '...filtering...' | xargs flog
Which did not work, after which... (3 Replies)
Pleeeeease help..
I'm working in perl
i have a system function to check whether a file is readable for others or not.
i just want to print a text in that command
my command is :
system ("ls -la $filename | awk '\$1~ /^-......r../ {print \$9}'");
i know for displaying text in awk... (6 Replies)
I need to
1.Open a csv
2.Process the csv i.e. Modify 2 column in the csv.
To modify the column the value needs to be passed to a pl/sql function and the return value should be updated
For eg:
If column 2 E,then E will be passed in database function
which will return Employee.
3. Write a... (5 Replies)
Let me start off by saying I am a self taught sometimes scripter so what you will see below won't be pretty.
I have created a script to parse through a file with a large amount of data and simply pull out what I need. In doing this I create several files and then paste them together in order to... (2 Replies)
After some thought.
I am uncomfortable issuing my professors name where, there may be unintended side effects from any negative responses/feedback. Willing to re post if I can omit school / professor publicly, but can message moderator for validation? I am here for knowledge and understanding,... (1 Reply)
I have a script which does gunzip, zip and untar.
Input to the script is file name and file directory (where file is located)
I am reading the input parameters as follows:
FILENAME=$1
FILEDIR=$2
I have created 3 functions that are as follows:
1) gunzip file
2) unzip file... (2 Replies)
Hi,
I'm fairly new to programming and was just wondering... Is it possible to modify the cat command (using a linux virtual machine) so that it displays text of a file and highlights a specifically chosen word? I've been looking for how to do it on the internet and can't find any helpful... (3 Replies)
Discussion started by: IndigoFox
3 Replies
LEARN ABOUT DEBIAN
plan9-cat
CAT(1) General Commands Manual CAT(1)NAME
cat, read, nobs - catenate files
SYNOPSIS
cat [ file ... ]
read [ -m ] [ -n nline ] [ file ... ]
nobs [ file ... ]
DESCRIPTION
Cat reads each file in sequence and writes it on the standard output. Thus
cat file
prints a file and
cat file1 file2 >file3
concatenates the first two files and places the result on the third.
If no file is given, cat reads from the standard input. Output is buffered in blocks matching the input.
Read copies to standard output exactly one line from the named file, default standard input. It is useful in interactive rc(1) scripts.
The -m flag causes it to continue reading and writing multiple lines until end of file; -n causes it to read no more than nline lines.
Read always executes a single write for each line of input, which can be helpful when preparing input to programs that expect line-at-a-
time data. It never reads any more data from the input than it prints to the output.
Nobs copies the named files to standard output except that it removes all backspace characters and the characters that precede them. It is
useful to use as $PAGER with the Unix version of man(1) when run inside a win (see acme(1)) window.
SOURCE
/src/cmd/cat.c
/src/cmd/read.c
/bin/nobs
SEE ALSO cp(1)DIAGNOSTICS
Read exits with status eof on end of file or, in the -n case, if it doesn't read nlines lines.
BUGS
Beware of and which destroy input files before reading them.
CAT(1)