01-30-2011
may be you are referring to sed or awk
10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
How to edit large file using vi where you can't increase /usr/var/tmp anymore? (3 Replies)
Discussion started by: nazri
3 Replies
2. UNIX for Dummies Questions & Answers
Here's what I have...
$ vi foo1
- open foo1 and work around for a while. I yank a few lines into a buffer and then :w to save.
Next I :e foo2 to open foo2 and paste my buffer. I :w to save, but I would like to then be able to go directly back into foo1 where I was before I opened foo2. ... (4 Replies)
Discussion started by: djschmitt
4 Replies
3. UNIX for Dummies Questions & Answers
Hi,
I was a typical Windows guy. Like to do things just by clicking my mouse:cool:. I got a new job now...where they are big on unix.
I am trying to wet my fingures now with unix. Haven't taken the dive yet.
I am trying to find a solution for this problem.
Please help me with some... (4 Replies)
Discussion started by: sandeep78
4 Replies
4. UNIX for Dummies Questions & Answers
Hi
Can anybody tell the difference between Difference between cat , cat > , cat >> and touch command in UNIX?
Thanks (6 Replies)
Discussion started by: skyineyes
6 Replies
5. HP-UX
what are cpio.cat.z files??? Can I delete them??? (3 Replies)
Discussion started by: ldaliosmane
3 Replies
6. Shell Programming and Scripting
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)
Discussion started by: kmkocot
2 Replies
7. UNIX for Dummies Questions & Answers
Hi, I am trying to edit sshd_config file through the vi editor.
logged on as a root.
when I try to write the file I get:
Read-only file, not written; use ! to override
when i type :w!, I get:
Error: etc/ssh/sshd_config Permission denied.
I want to change:
#PermitRootLogin no to yes
freeBDS... (6 Replies)
Discussion started by: emosms
6 Replies
8. UNIX for Dummies Questions & Answers
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)
Discussion started by: figaro
5 Replies
9. Shell Programming and Scripting
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
10. Shell Programming and Scripting
Experts - I have an requirement to gunzip and edit many files in a pair of directories.
I have two scripts that work great when run separately, but I'm having problems
combining the two.
The goal is to gunzip the files found in the first script and pipe them to the
bash/sed script and... (9 Replies)
Discussion started by: timj123
9 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)