Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: $(< file ) and $( cat file )
Top Forums Shell Programming and Scripting $(< file ) and $( cat file ) Post 303012386 by jlliagre on Saturday 3rd of February 2018 05:29:50 AM
Old 02-03-2018
Quote:
Originally Posted by ctsgnb
This brings me to the question :
Does the special case $(<filename) support only and strictly 1 file ?
Passing more than one file to the redirection wont be interpreted that way, the second file will just be understood as a command name.
Code:
$(< file1 file2)

Using more than one redirection lead to undefined behavior.
Code:
$(< file1 <file2)

- ksh ignores all redirections but the first one, i.e. output file1. It doesn't check file2 for readability/existence.

- bash silently ignores the whole command, i.e. output nothing, however, it returns an error if file1 or file2 isn't readable (or doesn't exists)
This User Gave Thanks to jlliagre For This Post:
ctsgnb
 

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

cat and lp or pr printing of file

Can you use cat to send the first 25 lines of a file to the printer? I'm thinking I can pipe it with '|' but I'm not school to check printer output. With the 'nl' used, all lines are numbered on the print out, but how does one number only the blank lines? Thanks:) (1 Reply)
Discussion started by: bitwize
1 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 Dummies Questions & Answers

Easiest way to cat out first 100 lines of a file into a different file?

Not sure how to do this exactly.. just want to take the first 100 lines of a file and cat it out into a second file. I know I can do a more on a file and > it into a different file, but how can I make it so only the first 100 lines get moved over? (1 Reply)
Discussion started by: LordJezo
1 Replies

4. UNIX for Dummies Questions & Answers

How to cat file

I want to cat a file with only show the line contain '/bin/bash' but don't show the line contain 'load' (don't show if the line contain 'load' and '/bin/bash' together), how to type in the command? thk a lot! (2 Replies)
Discussion started by: zp523444
2 Replies

5. Shell Programming and Scripting

Cat all yesterdays file into one file?

I am looking for a command to take files with a specific date and cat them all into big file. I know I can use commands to list all of the files from a certain date. But I want to do that and take those files and make on large files containing all of them. Any help would be great. This is being... (1 Reply)
Discussion started by: Jcheetwood
1 Replies

6. Shell Programming and Scripting

split a line of a file and cat a file with another

Hi, I have two files one.txt laptop boy apple two.txt unix linux OS openS I want to split one.txt into one line each and concatenate it with the two.txt output files onea.txt laptop (4 Replies)
Discussion started by: avatar_007
4 Replies

7. Shell Programming and Scripting

Cat file

how to cat a file by ignoring first line and last line (1 Reply)
Discussion started by: thelakbe
1 Replies

8. UNIX for Advanced & Expert Users

cat can not open file

Hi All, I have stumbled upon very unique issue. In my script I am doing cat file and then greping and cutting so as to assign the value to variable. My file is, <mxc_tl_load_extractdata_prop.bsh> DB_USER=test_oper hostname=xxx FTP_USER=test1_operate MAIL_LIST=xxx@yyy.com... (1 Reply)
Discussion started by: paragd
1 Replies

9. UNIX for Advanced & Expert Users

for i in `cat file` do

in bash: for i in `cat file` ; do echo $i done; how will i do this in perl ? (10 Replies)
Discussion started by: linuxgeek
10 Replies

10. Shell Programming and Scripting

Ssh cat file output into a file on local computer

Hello, I'm on a remote computer by SSH. How can I get the output of "cat file" into a file on the local computer? I cannot use scp, because it's blocked. something like: ssh root@remote_maschine "cat /file" > /locale_machine/file :rolleyes: (2 Replies)
Discussion started by: borsti007
2 Replies

LEARN ABOUT SUNOS

gnomevfs-cat

gnomevfs-cat(1) 						   User Commands						   gnomevfs-cat(1)

NAME

       gnomevfs-cat - print a file to standard output using the VFS system

SYNOPSIS

       gnomevfs-cat URI

DESCRIPTION

       gnomevfs-cat prints a file to standard output using the virtual file system to access the file via a URI.

OPERANDS

       The following operands are supported:

       URI	       Specifies the file location in standard URI format.

EXAMPLES

       Example 1: Cat a File From a Web Server

       example% gnomevfs-cat http://www.sun.com

       Example 2: Cat a Local File

       example% gnomevfs-cat file:///home/user/README.txt

ENVIRONMENT VARIABLES

       See environ(5) for descriptions of the following environment variables: NLSPATH.

EXIT STATUS

       The exit value 0 is returned regardless of success or failure.

FILES

       The following files are used by this application:

       /usr/bin/gnomevfs-cat   Executable to print a file to standard output using the VFS system

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWgnome-vfs		   |
       +-----------------------------+-----------------------------+
       |Interface stability	     |External			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       gnomevfs-copy(1), gnomevfs-info(1), gnomevfs-ls(1), gnomevfs-mkdir(1)

NOTES

       Written by Stephen Browne, Sun Microsystems Inc., 2004.

SunOS 5.10							    6 Sep 2004							   gnomevfs-cat(1)
All times are GMT -4. The time now is 06:53 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy