Hi all,
I have an input file that I am pulling out certain phases using the following commands:
cat /nodes.txt | egrep -e 'OSVersion|PrimaryNodeName'
Currently the output looks like this:
OSVersion - 5.0
PrimaryNodeName - serverA
OSVersion - 5.0
PrimaryNodeName - serverB
OSVersion... (2 Replies)
Hi,
I want to return failure from my script if a string is NOT found in a file, but I can't work out how to negate my "if". At the moment I have :
if (egrep -i 'search string' filetosearch); then
echo "found"
else
return 2
fi
How can I get rid of the echo bit and just test for "string... (4 Replies)
Dear Friends,
I have a command which can result following output.
Packet is: /var/adm/yyyy/pkt6043
Intended for network : /vob/repo
I would like to retrive
pkt6043 and /vob/repo using single command.
Blue color test will be always contstant and red color text will be dynamic
... (2 Replies)
I have the following script that searches in several files and shows the search results and the matches filename on the screen.
find . -exec egrep -wH "word1|word2" {} \;
the output from the search display as:
file1
word1
word2
I need to show each file search output result on new... (5 Replies)
Attached is the exact ouput of a vmware VDR log file I am working with but what I am trying to achieve is as follows:
I need to output sections of the file using the string "Normal backup" as the start and "Duration" as the end to seperate files so I can then manipulate them further to create... (2 Replies)
Hi,
I am newbie in shell programming and I need some help.
I had some data and I format it in a file like
dn: uid=aaaaa, dc=exmple, dc=com
cn: bbbb cccc
sn: cccc
telephoneNumber:+30-6543-123456
I have to extract the information aaaaa , bbbb, cccc and the phone number
using awk... (3 Replies)
Hello all,
after spending hours of searching the web I decided to create an account here. This is my first post and I hope one of the experts can help.
I need to resolve a grep / sed / xargs / awk problem.
My input file is just like this:
----------------------------------... (6 Replies)
The order of egrep output seems to be as they occur in the file. How do I get the order as requested? For e.g.
file contents:
AAA
EEE
GGG
egrep 'GGG|AAA|EEE' file
gives
AAA
EEE
GGG
instead of
GGG
AAA
EEE (2 Replies)
If I have an output from egrep that has two elements on separate lines can I concatenate them? so the egrep for examople might be:
egrep "filename|type"
And the actual output might be:
./file001.doc
Type Text Document
How do I get the egrep to remove the line feed so the output is:
... (5 Replies)
Dear community,
I am trying for several hours now to create an egrep command to grep the number of lines containing a specific text from a text-file but seem to have an error somewhere.
The Textfile contains several thousand lines and has the expression "Lastname" in several lines.... (3 Replies)
Discussion started by: Donzo
3 Replies
LEARN ABOUT DEBIAN
expect_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)