As a rule I do not download any attachment from any forum. If it is true that you have lines containing tabs and spaces, and that the character return is present and you would like to remove those, please, try the following:
Hi,
I want to combined 500 .txt files (each file only has one line) to a single txt file (A.txt).
for example,
A1.txt with
12
23
34
45
A2.txt with
56
67
78
89
...etc, so I have A1.txt, A2.txt... , A499.txt, A500.txt (1 Reply)
Hi ,
I have a typical situation. I have 4 files and with different headers (number of headers is varible ).
I need to make such a merged file which will have headers combined from all files (comman coluns should appear once only).
For example -
File 1
H1|H2|H3|H4
11|12|13|14
21|22|23|23... (1 Reply)
Dea all,
I have a question. I have a column of numbers with scientific notion and decimal combined data. I want to print it only if the number <0.05 using awk. however the very small numbers with scientific notion is not selected. Do any one know how to solve it? Thanks! example as below: ... (4 Replies)
Hey folks. I wrote a little awk script that summarizes /proc/net/dev info and then pipes it to the nix column command to set up column spacing appropriately.
Here's some example output:
Iface RxMBytes RxPackets RxErrs RxDrop TxMBytes TxPackets TxErrs TxDrop
bond0 9 83830... (3 Replies)
Hello,
i need to search one word (snp1) from many files and copy the content of the columns of this word in new file.
example:
file 1:
SNP BP CHR P
snp1 1 3 0.01
snp2 2 2 0.05
.
.
file 2:
SNP BP CHR P
snp1 1 3 0.06
snp2 2 2 0.3
output... (6 Replies)
Hi everybody!
I try to printout a csv-file with the exeption of cell $1 and $4.
what i tried so far:
awk '{for(i = 1; i<=NF; i++);if(i == 1 || i == 4);else print($i)}' file.csv
..any ideas how it work and why my example fails?
Thanks in advance!
IMPe (3 Replies)
have written a combined sed+awk to perform a lookup operation which works but looking to enhance it.
looking to match a record using any of the comma separated values + return selected fields from the record - including the field header. so:
cat foo
make,model,engine,trim,value... (6 Replies)
Hi folks
I need/want to redirect output (stdout, stderr) from an exec call to separate files. One for stderr only and two(!) different (!) ones for the combined output of stderr and stdout.
After some research and testing i got this so far :
(( exec ${command} ${command_parameters} 3>&1... (6 Replies)
Discussion started by: MDominok
6 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)