08-19-2008
10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
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)
Discussion started by: majeed73
6 Replies
2. Shell Programming and Scripting
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)
Discussion started by: luistid
0 Replies
3. Shell Programming and Scripting
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)
Discussion started by: gfhgfnhhn
6 Replies
4. UNIX for Dummies Questions & Answers
There are two files named goody and good. Please look at their single line contents:-
$ cat goody
hi m goody
$ cat good
hi m good
1)
$ cat goody < good
hi m goody
When we give cat, a file to read from, standard input is ignored.
As such, the above operation will just display contents... (2 Replies)
Discussion started by: marconi
2 Replies
5. Shell Programming and Scripting
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)
Discussion started by: pn8830
4 Replies
6. Shell Programming and Scripting
All,
I have a requirement to write a script where I check for Input redirection when the script was executed, based on which I handle my logic. Below is the example:
my.script
#! /bin/ksh
# Not sure how to frame the if condition below
if ; then
echo "Input Redirected from a file"
... (7 Replies)
Discussion started by: bharath.gct
7 Replies
7. UNIX for Dummies Questions & Answers
Hello,
I'm new to Unix (working with OS X 10.8.5) and therefore at the beginning of my adventure. If I ask something stupid, then this is not intentional, but simple nescience. :rolleyes:
I have a problem with the redirection of text file content to echo. I was experimenting with redirection... (6 Replies)
Discussion started by: pseudo
6 Replies
8. UNIX for Dummies Questions & Answers
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)
Discussion started by: PTcharger
4 Replies
9. Shell Programming and Scripting
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)
Discussion started by: ashokvpp
2 Replies
10. Shell Programming and Scripting
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)
Discussion started by: heinzel
2 Replies
VIPW(8) System Manager's Manual VIPW(8)
NAME
vipw - edit the password file
SYNOPSIS
vipw
DESCRIPTION
Vipw edits the password file while setting the appropriate locks, and does any necessary processing after the password file is unlocked.
If the password file is already being edited, then you will be told to try again later. The vi editor will be used unless the environment
variable EDITOR indicates an alternate editor.
Vipw performs a number of consistency checks on the password entries, and will not allow a password file with a ``mangled'' entry to be
installed. If vipw rejects the new password file, the user is prompted to re-enter the edit session.
Once the information has been verified, vipw uses mkpasswd(8) to update the user database. This is run in the background, and, at very
large sites could take several minutes. Until this update is completed, the password file is unavailable for other updates and the new
information will not be available to programs.
SEE ALSO
chpass(1), passwd(1), passwd(5), adduser(8), mkpasswd(8)
4th Berkeley Distribution March 11, 1989 VIPW(8)