10 More Discussions You Might Find Interesting
1. HP-UX
Hi,
In our HP-UX B.11.11. I could not find dev/urandom and dev/random
Are all pseudo-devices implemented as device drivers, or in need to run /configure some package to install the package to have dev/urandom.
Please help (4 Replies)
Discussion started by: rashi
4 Replies
2. UNIX for Advanced & Expert Users
Hi
I'm running the following command to generate a random password in a KSH script on a RHEL Linux VM but for some reason the cmd is not being closed and it's causing problems on the host.
PASSWORD="$(cat /dev/urandom | tr -dc "a-zA-Z0-9" | fold -w 16 | head -1)Aa0!"
The code worked as... (2 Replies)
Discussion started by: user052009
2 Replies
3. Shell Programming and Scripting
Hello,
I'm trying to send the error output of a 'cat' operation to /dev/null like this:
cat /dirA/dirB/temp*.log > /dirA/dirB/final.log 2>/dev/null
This works perfectly in a terminal, but not when placed in a script.
If there are no files matching temp*.log the script outputs an error... (7 Replies)
Discussion started by: Nils88
7 Replies
4. Slackware
I am having problems using soundes. Until a few moments ago
the following commands produced errors and no sound:
cat /usr/share/apps/kolf/sounds/blackhole.wav/ > /dev/dsp yielded:
/dev/dsp: Invalid argument
cat /usr/share/apps/kolf/sounds/blackhole.wav > /dev/audio yelded:
/dev/audio:... (3 Replies)
Discussion started by: slak0
3 Replies
5. Shell Programming and Scripting
I have a file with a single filename in it, which I want to assign to a BASH variable, so I've been trying:
c=$(head -1 somefile)
echo $c
which outputs correctly, but them when I do
...
somecommand $c
it says it can't find the file, is that because it's grabbing the whole line, and... (5 Replies)
Discussion started by: unclecameron
5 Replies
6. Shell Programming and Scripting
cat myname.txt
John Doe I
John Doe II
John Doe III
-----------------------------------------------------------------------
for i in `cat myname.txt`
do
echo This is my name: $i >> thi.is.my.name.txt
done
-----------------------------------------------------------------------
cat... (1 Reply)
Discussion started by: danimad
1 Replies
7. UNIX for Dummies Questions & Answers
Hi,
Excuse my ignorance here - I'm a networks man and my knowledge of all things unix is somewhat limited.
We have a very large file (/var/tmp/mond.log) that we need to zero - does the "cat /dev/null > /var/tmp/mond.log" command achieve this? (4 Replies)
Discussion started by: freakydancer
4 Replies
8. UNIX for Dummies Questions & Answers
Hi, how do I use /dev/urandom to generate a single number between 1-100? I can od /dev/urandom but it gives me an endless list of random numbers, I just want 1 between 1-100. How can I get that? Thanks. (12 Replies)
Discussion started by: Takumi
12 Replies
9. UNIX for Dummies Questions & Answers
I've a major file which includes other files and now I wanna 'cut' the file in several minor parts....like
....
find / -name "*.tmp" >filea
wc -l filea >fileb
sed -e '1s/ filea//' fileb >filec
AMOUNT=`cat filec`
if ; then
cat file a |head -100l (ell) |tail -100l >filec
cat file a |head... (6 Replies)
Discussion started by: svennie
6 Replies
10. Shell Programming and Scripting
hai
in my shell script i want to replace the following commands
1) more
2) head
3) tail
i want to try all type of possible options avaliabul in the above commands
please help in implementing those commands (9 Replies)
Discussion started by: g_s_r_c
9 Replies
FOLD(1) BSD General Commands Manual FOLD(1)
NAME
fold -- fold long lines for finite width output device
SYNOPSIS
fold [-bs] [-w width] [file ...]
DESCRIPTION
The fold utility is a filter which folds the contents of the specified files, or the standard input if no files are specified, breaking the
lines to have a maximum of 80 columns.
The options are as follows:
-b Count width in bytes rather than column positions.
-s Fold line after the last blank character within the first width column positions (or bytes).
-w width
Specify a line width to use instead of the default 80 columns. Width should be a multiple of 8 if tabs are present, or the tabs
should be expanded using expand(1) before using fold.
ENVIRONMENT
The LANG, LC_ALL and LC_CTYPE environment variables affect the execution of fold as described in environ(7).
SEE ALSO
expand(1), fmt(1)
STANDARDS
The fold utility conforms to IEEE Std 1003.1-2001 (``POSIX.1'').
BUGS
If underlining is present it may be messed up by folding.
BSD
August 2, 2004 BSD