What is the command to count lines in a files, but ignore blank lines and commented lines?
I have a file with 4 sections in it, and I want each section to be counted, not including the blank lines and comments... and then totalled at the end.
Here is an example of what I would like my... (6 Replies)
so i have a simple file called -x and i need it renamed to x
now i dont understand why when using the most basic methods, only the code mv ./-x x changes the file name while using any other type of escape characters around the dash, such as single/double quotations or backslash, doesnt.
... (5 Replies)
i have a file called Cleaner1.log . This files have some blank lines also.My requirement is that it should ignore the blank lines and give me the lines that contain some data.
I m using this logic in a script:
below the contents of file :
Maximum Time Taken for Processing(Failed) RR... (4 Replies)
Hi
We use # sign to ignore any line (i.e. comment ). But is it possible to ignore group of line at once or i have to use # in front of each line.
Thanks
Sarbjit (3 Replies)
I have a data set that has 4 columns, I want to know if I can delete duplicate lines while ignoring one of the columns, for example
10 chr1 ASF 30
15 chr1 ASF 20
5 chr1 ASF 30
6 chr2 EBC 15
4 chr2 EBC 30
...
I want to know if I can delete duplicate lines while ignoring column 1, so the... (5 Replies)
I've got two different files and want to compare them.
File 1 :
HTML Code:
<response ticketId="944" type="getQueryResults"><status>COMPLETE</status><description>Query results fetched successfully</description><recordSet totalCount="1" type="sms_records"><record... (1 Reply)
Hello,
I have a requirement to ignore few lines in a file before keyword FILEHEADER . As soon as there is keyword FILEHEADER is identified in file , it will form another file with data from FILEHEADER to whatever in file after FILEHEADER.
I wrote
filename=$1
awk... (4 Replies)
i have a file in the gz format , the content of the file is as follow.
gzcat f1.gz
# 1.name
# 2.location
# 3.age
# 4.dob
.
.
.
.
.
.
.
.
.
# 43.hobbies
< Aravind,33,chennai,09091980, , , , , , , surfing> (5 Replies)
I have this structure:
col1 col2 col3 col4 col5
27 xxx 38 aaa ttt
2 xxx 38 aaa yyy
1 xxx 38 aaa yyy
I need to collapse duplicate lines ignoring column 1 and add values of duplicate lines (col1) so it will look like this:
col1 col2 col3 col4 col5
27 xxx 38 aaa ttt ... (3 Replies)
Oracle Linux 6.5
$ cat someStrings.txt
GRANT select on MANHPRD.S_PROD_INT TO OR_PHIL;
GRANT select on MANHPRD.S_PROD_INT TO OR_PHIL;
GRANT select on SCOTT.emp to JOHN;
grant select on scott.emp to john;
grant select on scott.dept to hr;If you ignore the case and the empty space between the... (6 Replies)
Discussion started by: kraljic
6 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)