Im trying to make a proper hosts.allow with the lists of sshbl.org to block the ssh brute force attackers.
The list is a text file with an IP on every line.
What I've gotten up sofar is to prefix "sshd : " on every line, but I need a " : deny" suffix behind every line as well.
How can I do this? I've made the part that is unknown to me underlined.
Code sofar:
Thx for the help.
Hi,
I have a variable, which contains comma separated values. Something like.
StringA="abc,def,ghi,jkl"
I want to apply prefix and suffix to each value in the string without using any loops.
Say if Prefix is Pre_ and Suffix is _Suf then I need to get
... (1 Reply)
I am using GNU csplit to extract chapters from a big file into smaller files.
I want to use the -b option
-b, --suffix-format=FORMAT use sprintf FORMAT instead of %d
but I have failed so far.
1) All the generated files need to have a suffix .txt at the end
2) They have to look like... (1 Reply)
if I want to search those files which were suffix with .c,
I can use find ./ -name *.c
but how to find out those files which were not suffix with .c ??
Thanks a lot! (2 Replies)
Hi Experts,
I have a syslog file from 1000's of different hosts which I want to adjust by removing the domain suffix from the hosts.
My previous attempts haven't managed to match all the different lenghts of the subdomains which are being logged.
Could somebody suggest which sed syntax... (6 Replies)
hi
I have a string pattern like
...
...
000446448742 00432265 040520100408 21974435 DEWSWATER GARRIER AAG IK4000 N 017500180000000000000000077000000000100
000446448742 00580937 040520100408 32083576 PEWSWATER BARRIER DAG GK4000 ... (6 Replies)
trying to write up a script to put the suffix back.
heres what I have but can't get it to do anything :(
would like it to be name.date.suffix
rsync -zrlpoDtub --suffix=".`date +%Y%m%d%k%M%S`.~" --bwlimit=1024 /mymounts/test1/ /mymounts/test2/
while IFS=. read -r -u 9 -d '' name... (1 Reply)
i would like to format the 9 character with suffix as "0".
i tried below it doesn't work.
>a=12345
> echo $a | awk '{printf "%-09s\n",$1}'
>12345
required output is 123450000
can you guys help me out ? (7 Replies)
Hi,
I want to add prefix and suffix on line# 205 using SED or AWK and want to change on the same file without creating new file.
This command will be used in the bash script
Am using Bash shell
Regards
Nayaj (3 Replies)
Discussion started by: Nayaj
3 Replies
LEARN ABOUT CENTOS
unbuffer
UNBUFFER(1) General Commands Manual UNBUFFER(1)NAME
unbuffer - unbuffer output
SYNOPSIS
unbuffer program [ args ]
INTRODUCTION
unbuffer disables the output buffering that occurs when program output is redirected from non-interactive programs. For example, suppose
you are watching the output from a fifo by running it through od and then more.
od -c /tmp/fifo | more
You will not see anything until a full page of output has been produced.
You can disable this automatic buffering as follows:
unbuffer od -c /tmp/fifo | more
Normally, unbuffer does not read from stdin. This simplifies use of unbuffer in some situations. To use unbuffer in a pipeline, use the
-p flag. Example:
process1 | unbuffer -p process2 | process3
CAVEATS
unbuffer -p may appear to work incorrectly if a process feeding input to unbuffer exits. Consider:
process1 | unbuffer -p process2 | process3
If process1 exits, process2 may not yet have finished. It is impossible for unbuffer to know long to wait for process2 and process2 may
not ever finish, for example, if it is a filter. For expediency, unbuffer simply exits when it encounters an EOF from either its input or
process2.
In order to have a version of unbuffer that worked in all situations, an oracle would be necessary. If you want an application-specific
solution, workarounds or hand-coded Expect may be more suitable. For example, the following example shows how to allow grep to finish pro-
cessing when the cat before it finishes first. Using cat to feed grep would never require unbuffer in real life. It is merely a place-
holder for some imaginary process that may or may not finish. Similarly, the final cat at the end of the pipeline is also a placeholder
for another process.
$ cat /tmp/abcdef.log | grep abc | cat
abcdef
xxxabc defxxx
$ cat /tmp/abcdef.log | unbuffer grep abc | cat
$ (cat /tmp/abcdef.log ; sleep 1) | unbuffer grep abc | cat
abcdef
xxxabc defxxx
$
BUGS
The man page is longer than the program.
SEE ALSO
"Exploring Expect: A Tcl-Based Toolkit for Automating Interactive Programs" by Don Libes, O'Reilly and Associates, January 1995.
AUTHOR
Don Libes, National Institute of Standards and Technology
1 June 1994 UNBUFFER(1)