Hi
I am doing file redirection at console for use by my binary.
%console%> bin < inputfile
After reading in the entire file, I want my program to continue taking input from the console. So essentially I want to redirect stdin back to console. But I cant figure out how to do it.
I am... (4 Replies)
Hi everybody, first of all i am a new member in UNIX.com and this is my first post.
I am impressed with the amount of information a person can ever have in this forum, it is really great having something similiar; anyways let me tell you about the problem I am having, hope you will answer me.... (6 Replies)
Hi,
in my script I need to execute the following command:
query $id 456 432
but it waits for a RETURN character from keyboard and therefore, it fails. I tried something like:
query $id 456 432 << '\n'
but, i'ts clear it is not correct. Is there any way to do this?
Thxs. (0 Replies)
while running a user inter-active program
how can we get the commands from a
file instead of the user?
is there anyway to permanently redirect content
of a file to standard input? (6 Replies)
I have a colon-delimited text file of names, addresses and phone numbers. I am trying to write a script that can add additional entries and then sort it alphabetical by last name and resave it to the original file. I am using C shell to script. This is the section of my script that I wish to... (8 Replies)
Hello,
I need help with a bash script that I try to improve. I could not find answer so far, maybe because I'm not to familiar with the terminology so feel free to correct my language.
I have a script that looks like:
NODES="node_a node_b node_c"
for NODE in $NODES
do
... (4 Replies)
Can someone please explain when input redirection is necessary?
For example, "cat filename" and "cat< filename" produce the same result. I was told that if I need to bunzip a file that I should type "bunzip2<filename.bz2." However, if I omit the "<" I still get the same result. Can someone... (4 Replies)
Hi,
#!/bin/bash
while ;
do
rm -f /tmp/pipe
mkfifo /tmp/pipe
./yuv4mpeg_to_v4l2 < /tmp/pipe &
mplayer tom_and_jerry.mp4 -vf scale=480:360 -vo yuv4mpeg:file=/tmp/pipe
sleep 65;
done
When I run this - after mplayer finishes playing video it says - Exiting... (End of... (2 Replies)
Hi,
when I try to redirect input and the command is described as a string within an array redirection does not work. why?
#!/bin/bash
dir=("tail < ./hello.txt")
tail < ./hello.txt #works
${dir} #does not work (2 Replies)
Hi,
I have a peculiar issue w.r.t redirecting the command output to a file when using loop.
I am redirecting command output to same file in a series of if condition statements, but if one block of if condition statement writes the log to the file , the subsequent block of if condition... (7 Replies)
Discussion started by: ananan
7 Replies
LEARN ABOUT HPUX
command
command(1) General Commands Manual command(1)NAME
command - execute a simple command
SYNOPSIS
command_name [argument ...]
DESCRIPTION
enables the shell to treat the arguments as a simple command, suppressing the shell function lookup.
If command_name is not the name of the function, the effect of is the same as omitting command.
Operands
recognizes the following operands:
command_name The name of a HP-UX command or a shell built-in command.
argument One or more strings to be interpreted as arguments to command_name.
The command is necessary to allow functions that have the same name as a command to call the command (instead of a recursive call to the
function).
Nothing in the description of is intended to imply that the command line is parsed any differently than any other simple command. For
example,
is not parsed in any special way that causes or to be treated other than a pipe operator or semicolon or that prevents function lookup on b
or c.
EXTERNAL INFLUENCES
Environment Variables
determines the search path used during the command search.
RETURN VALUE
exits with one of the following values:
o If fails:
126 The utility specified by the command_name is found but not executable.
127 An error occurred in the utility or the utility specified by command_name is not found.
o If does not fail:
The exit status of is the same as that of the simple command specified by the arguments: command_name[argument ...]
EXAMPLES
Create a version of the command that always prints the name of the new working directory whenever it is used:
cd() {
command "$@" >/dev/null
pwd
}
Circumvent the redefined command above, and change directories without printing the name of the new working directory:
SEE ALSO getconf(1), sh-posix(1), confstr(3C).
STANDARDS CONFORMANCE command(1)