Quick question,
File A has one line (10 charachters), File B has one line (10 charachters).
how do a concat these two files together to produce a file (File C) that has the contents of Files A + B together onto one line of 20 Charachters
if I use:
cat FileA FileB > FileC
I get the... (5 Replies)
Hi,
I need to write a shell script that should lists only the files that starts with alphabet from the /proc dir and then I have to cat those files and redirect to a file.
But my below script is not working. It is reading the first file properly but not the subsequent files. Please throw a... (2 Replies)
i have data files in different directories like /jadat
/cadat etcc... i have list of this directories in a file files.
content of files:
ja
ca
directories:
/jadat
/cadat
file in each of these directories
natt_trans_like.dat
i need to loop though each directory for a... (1 Reply)
Hi all,
I have a directory with many subdirectories each named like so: KOG0001, KOG0002, ...KOG9999.
Each of these subdirectories contain a variable number two kinds of files (nuc and prot) named like so: Capitella_sp_nuc_hits.fasta (nuc) and Capitella_sp_prot_hits.fasta (prot). The... (2 Replies)
Hi, sometimes one wants to edit files while still seeing output of earlier commands in terminal. I've found out that cat test && cat - >> test does the trick for displaying file content and adding lines but I believe I saw a much cooler command that was also able to erase lines from files. I cannot... (6 Replies)
I am concatenating txt-files using cat:
cat *.txt > file.dat
However, the same directory has the installation instructions included, which is also a txt file: install.txt
I currently have the install.txt file renamed to install._txt, but I prefer a solution using regular expressions.
Is there... (5 Replies)
Hello,
I am PhD student (Biomedical sciences) and very new to Linux. I need some help with the following task :
I have files in the following format for their names :
An_A1_nnn_R1.txt; An_A1_nnm_R1.txt; An_A1_nnoo_R1.txt
An_A2_nnn_R1.txt; An_A2_nnm_R1.txt; An_A2_nno_R1.txt
... (8 Replies)
I am trying to cat 3 files. They all have the same name MFExtract.txt. But, they are in 3 seperate file names. Any idea how I could cat the 3 together. It's throwing me off figuring out a way because the names are the same. I was thinking just doing a 3 cat commands with the full path names and... (2 Replies)
I am new to Linux and I am trying to cat only N files in a folder. N is dynamically given number at runtime.
If I give N as 2 then cat only 2 files in the folder
and If I give N as 5 then cat only 5 files in the folder.
Is there any way to do that? (6 Replies)
Discussion started by: KMusunuru
6 Replies
LEARN ABOUT ULTRIX
cat
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 Alsocp(1), ex(1), more(1), pr(1), tail(1)cat(1)