Sponsored Content
Full Discussion: cat problem
Top Forums Shell Programming and Scripting cat problem Post 302108844 by reborg on Thursday 1st of March 2007 08:35:51 AM
Old 03-01-2007
Quote:
Originally Posted by matrixmadhan
You dont need a cat really! Smilie
Code:
while read line
do
echo "$line"
done < file

Note the use of quotes around $line
 

10 More Discussions You Might Find Interesting

1. UNIX for Advanced & Expert Users

Problem with cat

On Solaris 5.8 in ksh, I have a sample.txt with contents A 105 305 B 205 405 C 100 198 ....................... when I do a cat sample.txt the O/P is exactly as above but when I do a echo `cat sample.txt` the O/P changes to A 105 305 B 205 405 C 100 198........... Everything is... (3 Replies)
Discussion started by: macrulez
3 Replies

2. Shell Programming and Scripting

cat file problem

Hi, I wnat to read a fiel line by line and store each line in a variabel, so I made a for loop: for i in `cat file` ; do #do sth. done; The problem is, that in the file, there are lines with only asterisks like this... (3 Replies)
Discussion started by: bensky
3 Replies

3. UNIX for Advanced & Expert Users

Problem with cat with PERL Substitute

system("cat FILENAME | perl -e 'while(<>) { print $_;}'"); system("cat FILENAME | perl -e 'while(<>) { $_ =~ s/XXX/YYY/g; print $_;}'"); First command works fine but second command gives the following error: syntax error at -e line 1, near "{ =~" syntax error at -e line 1, near ";}"... (2 Replies)
Discussion started by: jingi1234
2 Replies

4. UNIX for Dummies Questions & Answers

Difference between cat , cat > , cat >> and touch !!!

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. UNIX for Dummies Questions & Answers

Help me with a little problem with command cat

Hi I am having a little trouble understanding how to use this cat command. My question is the following: write a command to create a file called catFiles that contains three copies of the file catFile. If you can help me to understand how to create this, I would be very greatful. Thanks... (2 Replies)
Discussion started by: rushhour
2 Replies

6. Shell Programming and Scripting

Formatting problem with cat, egrep and perl

Hi guys I'm using the following script to change input file format to another format. some where I'm getting the error. Could you please let me know if you find out? cat input.txt|egrep -v ‘^#'|\ perl -ane ‘if (@F>3){$_=~/(chr.+):(\d+)\ s()/;print $1,”\t”,$2,”\t”,($2+35),”\n”}'\ > output.bed ... (1 Reply)
Discussion started by: repinementer
1 Replies

7. Shell Programming and Scripting

problem using CAT command in PERL

Hi All, I was trying to run the cat command using perl SCRIPT for my daily reports. However cat command is not working in PERL. please help me. cat FILE1.txt |cut -d "|" -f1 >INPUT1.txt cat FILE2.txt|wc -l *9111*|>INPUT2.txt paste INPUT1,INPUT2 >OUTPUT.txt Thanks in advance ... (3 Replies)
Discussion started by: adaleru
3 Replies

8. Shell Programming and Scripting

Problem with cat

I am trying to use the following code: cat *.txt > OutPutFile.txt Using files with a expression in one single line that always end with " ; " something like this: Block1.txt Block2.txt Block3.txt The expected result should be something like this: OutPutFile.txt: My code works OK in this... (4 Replies)
Discussion started by: Xterra
4 Replies

9. Shell Programming and Scripting

Problem with cat

Hey all this is probably something simple but not sure why I am getting this error. Any help is appreciated. Expected output: $ ./ex_01.ksh word1 word2 word3 word4 arguments: word1 word2 word3 word4 Number of arguments: 4 what I am getting: ./ex_01.ksh word1 word2 word3 word4 cat:... (3 Replies)
Discussion started by: linuxn00b
3 Replies

10. Shell Programming and Scripting

Problem with egrep and cat

Hello, I want to find some keywords in a dd image. I have created a keyword file (1.txt) and search the dd image using, cat /media/sdb1/test/c.dd.001 | strings | egrep -i --color -f 1.txt It works, But how can I get the file name and path? Many thanks. (7 Replies)
Discussion started by: yzy9951
7 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)
All times are GMT -4. The time now is 06:31 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy