Thanks for the response.
However,
Using the cat the alignment of the source file is getting changed , when this is getting merged into a single file !!
hello
have a file1
H87I
Y788O
T347U
J23U
and
file2 J23U U887Y I99U T556U
file3 I99O J99T F557J
file4 N99I T666U R55Y
file5 H87I T347U
file6 H77U R556Y E44T
file7 Y788O K98U H8I
May be using script we can use file1 to search for all the files
and have the output
H87I file5... (3 Replies)
Hi,
I am having a file which contains as below
Names(aaaa
,bbbb
,cccc
,dddd)
now i want the file to be updated with new value 'eeee' as below
Names(aaaa
,bbbb
,cccc
,dddd
,eeee)
Is there a way to script this ?
Thanks, (5 Replies)
Hi, I am new in unix,
I just want to replace some values from text file according to column numbers. Like, I am having a table as given below:
val1 val2 val3 val4 val5
val6 val7 val8 val9
val10 val11 val12 val13
Now i want... (5 Replies)
Need shell script to read two file at same time and print output in single file
Example I have two files 1) file1.txt 2) file2.txt
File1.txt contains
Aaa
Bbb
Ccc
Ddd
Eee
Fff
File2.txt contains
Zzz
Yyy
Xxx (10 Replies)
Hello
Has anyone got an example shell script that I can use to compare the contents of two files.
The files should contain the same contents, eg.
file1.txt
apple
pear
grape
file2.txt
apple
pear
grape (2 Replies)
Hi,
Need help in writing a script to read the contents of this file test
Test
00a
00b
00c
00d
00e
00f
where it need to read each line to give a display such as
form meta from dev 00a , config=Striped; add dev 00b:00f to meta 00a
Can any one help me in writing this script (2 Replies)
Hi,
I am facing issue while reading data from a file in UNIX. my requirement is to compare two files and for the text pattern matching in the 1st file, replace the contents in second file by the contents of first file from start to the end and write the contents to thrid file.
i am able to... (2 Replies)
Hello all,
I have a Kconfig file that looks like something below ...
================================
menu "Application type"
config GUI_TYPE_STANDARD
bool "Standard Application"
source "cfg/config/std.in"
source... (12 Replies)
Hi,
I have two files separated by bars at each line
File 1 :
A|4356|13456|23456
A|4356|2986|98732
A|8765|218|1432567
File 2:
B|12|13456|1234567
B|11|13456|123456789
B|33|2986|98732
B|11|2986|14578965
B|8765|218|147584
Common field is third field like 13456, 2986 and 218 in both... (5 Replies)
Shell script logic
Hi
I have 2 input files like with file 1 content as (file1)
"BRGTEST-242" a.txt "BRGTEST-240" a.txt "BRGTEST-219" e.txt
File 2 contents as fle(2)
"BRGTEST-244" a.txt "BRGTEST-244" b.txt "BRGTEST-231" c.txt "BRGTEST-231" d.txt "BRGTEST-221" e.txt
I want to get... (22 Replies)
Discussion started by: pottic
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)