Hi all. I've been put in charge of updating one of our AIX 5.2 servers to ML7. (perhaps not wise since I'm an absolute n00b, but hey, it's good experience to fly by the seat of one's pants).
So:
a) I typed "oslevel -r" and got back "5200-04"
b) I went to IBM's Fix Central and downloaded... (1 Reply)
Is there any way to look for a directory path that is listed any number of lines *before* a keyword in an error message?
I have a script that is trying to process different files that are always down a certain portion of a path, and if there is an error, then says there is an error, contact... (2 Replies)
Hi,
I have a variable , lets say
a=/disk1/net/first.ksh
i need to grep "first.ksh"
everytime "a" gets changed dynamically and i do not know how many '"/" are there in my variable.
Can somebody help me out. (9 Replies)
Hello. I'm not nearly good enough with awk/perl to create the logfile scraping script that my boss is insisting we need immediately. Here is a brief 3-line excerpt from the access.log file in question (actual URL domain changed to 'aaa.com'):
209.253.130.36 - - "GET... (2 Replies)
I'm new to Unix scripting and I'm not sure if this can be done. Example:
search (grep) in a file for 'Control ID' and then replace with 4 blanks 7 bytes before 'Control ID.
input
"xxxxxx1234xxxxxxxControl IDxxxxxx"
output:
"xxxxxx xxxxxxxControl IDxxxxxx"
thanks! (7 Replies)
I'm having trouble writing a regular expression that matches the text I need it to. Let me give an example to express my trouble. Suppose I have the following text:
if(condition)
multiline
statement
else if(condition)
multiline
statement
else if(condition)
multiline
statement
else... (3 Replies)
Hi all,
I'm trying to FTP what looks like a simple .txt file from my Windows XP desktop to my UNIX server. I've tried using several programs to do this including UltraEdit and FTP Commander. I have tried sending it ascii, binary and even let the program decide. But every time it arrives in UNIX... (4 Replies)
Hi all,
I'm after some help with this small issue which i'm struggling to work out a fix for.
I have a file that contains records that all have a time stamp for each individual record, i need to search the file for a specific time stamp and then search back 10 seconds to see if the number... (2 Replies)
Hi,
I'm using the following to do a backwards search of a file for a string
sed s/^M//g FILE | nawk 'c-->0;$0~s{if(b)for(c=b+1;c>1;c--)print r;print;c=a}b{r=$0}' b=10 a=0 s="9005"|grep "policy "|sort -u |awk '{print $4}'|cut -c2-10
My issue is that because I'm looking back 10 lines it's... (11 Replies)
hi all,
trying this using shell/bash with sed/awk/grep
I have two files, one containing one column, the other containing multiple columns (comma delimited).
file1.txt
abc12345
def12345
ghi54321
...
file2.txt
abc1,text1,texta
abc,text2,textb
def123,text3,textc
gh,text4,textd... (6 Replies)
Discussion started by: shogun1970
6 Replies
LEARN ABOUT SUSE
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)