Hi,
I have a sql file and i need to extract the table names used in the sql file using a unix script. If i can extract the lines between the keywords 'FROM' and 'WHERE' in the file, my job is done. can somebody tell me how to do this using a shell script. If u can just let me know, how to... (2 Replies)
Hi all,
I'm very very new to UNIX and AWK world.Please help me in finding a solution for my problem.
I'm having a file like this
-----------------------------------------------------------------
~Version Information
VERS. 2.0: CWLS log ASCII Standard -VERSION 2.0
WRAP. ... (4 Replies)
Hi,
HP-UX gxxxxxxxc B.11.23 U ia64 3717505098 unlimited-user license
I have a file with below pipe separated field values:
xxx|xxx|abcd|xxx|xxx|xx
xxx|xxx|abcd#123|xxx|xxx|xx
xxx|xxx|abcd#345|xxx|xxx|xx
xxx|xxx|pqrs|xxx|xxx|xx
xxx|xxx|pqrs#123|xxx|xxx|xx
The third field has values like... (6 Replies)
Thank you for assisting,
I've got a partial solution just needs a tweak.
Hulk-BASH$ cat somefile.txt
oh there is some stuff here
some more stuff here
START_LABEL
stuff I want
more stuff I want
END_LABEL
other stuff here too
and even more stuff here too
Hulk-BASH$
Hulk-BASH$ sed... (8 Replies)
Hi all,
I have a positional text file that comes from some source application. Before it is processed by destination application I have to add some header (suffix) to every record(line) in the file.
e.g.
Actual File
...............
AccountDetails
AcNO Name Amount
1234 John 26578
5678... (3 Replies)
Hello all
I am getting data like
col1 | col2 | col3
asdafa | asdfasfa | asf*&^sgê
345./ |sdfasd23425^%^&^ | sdfsa23
êsfsfd | sf(* | sdfsasf
My requirement is like
I have to to read the file and remove all special characters and hex characters ranging form 00-1f from 1st column, remove %"'... (1 Reply)
Hi Guys,
I need some script in removing lines containing strings like ",, ," and "rows". Retain only numbers as the output. See below for the input and output file.
INPUT FILE:
9817
9832
6285
6312
6313
6318
,, ,
6329
7078
7098
7130
7959
7983 (7 Replies)
The question is not as simple as the title... I have a file, it looks like this
<string name="string1">RZ-LED</string>
<string name="string2">2.0</string>
<string name="string2">Version 2.0</string>
<string name="string3">BP</string>
I would like to check for duplicate entries of... (11 Replies)
Have two files and want to compare the content of file1 with file2. When matched remove the line.
awk 'NR==FNR {b; next} !(b in $0)' file1 file2file1
1. if match
2. removefile2
1. this line has to be removed if match
2. this line has a match, remove
3. this line has no match, no removingThe... (3 Replies)
Within my text file i have several thousand lines of text with some lines containing duplicate strings/words. I would like to entirely remove those lines which contain the duplicate strings.
Eg;
One and a Two
Unix.com is the Best
This as a Line Line
Example duplicate sentence with the word... (22 Replies)
Discussion started by: martinsmith
22 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)