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1. Shell Programming and Scripting
Hi All,
Hope you are doing Great!!!.
Today i have came up with a problem to say exactly it was for performance improvement.
I have written code in perl as a solution for this to cut in specific range, but it is taking time to run for files thousands of lines so i am expecting
a sed... (9 Replies)
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2. Shell Programming and Scripting
Hi All,
I'm trying to pass the comma separated values (string) returned from Plsql Procedure to UNIX variable.
getting the below log message
cat: -: Bad file descriptor
awk: cmd. line:1: fatal: error reading input file `-': Bad file descriptor
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3. Shell Programming and Scripting
My OS : RHEL 6.7
I have a text file with comma separated values like below
$ cat testString.txt
'JOHN' , 'KEITH' , 'NEWMAN' , 'URSULA' , 'ARIANNA' , 'CHENG', . . . .
I want these values to appear like below
'JOHN' ,
'KEITH' ,
'NEWMAN' ,
'URSULA' ,
'ARIANNA' ,
'CHENG',
.... (4 Replies)
Discussion started by: kraljic
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4. Shell Programming and Scripting
I have a file containing multiple values, some of them are pipe separated which are to be read as separate values and some of them are single value all are these need to store in variables.
I need to read this file which is an input to my script
Config.txt
file name, first path, second... (7 Replies)
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5. Shell Programming and Scripting
hello experts,
i am retrieving values in variables jobKey and jobName within my shell script. these values are returned to me within braces and i am using following command to remove those braces:
jobKeys=`echo $jobKeys | sed 's:^.\(.*\).$:\1:'`
jobNames=`echo $jobNames | sed... (1 Reply)
Discussion started by: avikaljain
1 Replies
6. UNIX for Dummies Questions & Answers
Hi,
I have a large number of files which are written as csv (comma-separated values).
Does anyone know of simple sed/awk command do achieve this?
Thanks!
---------- Post updated at 10:59 AM ---------- Previous update was at 10:54 AM ----------
Guess I asked this too soon. Found the... (0 Replies)
Discussion started by: lost.identity
0 Replies
7. Shell Programming and Scripting
Hi
pls help me to get the code:
i have a file in which content is :
2.01304E+11 2.01304E+11 ori 2 01:00
2.01304E+11 2.01304E+11 ori 2 01:02
2.01304E+11 2.01304E+11 ori 3 01:02
2.01304E+11 2.01304E+11 ori 3 ... (7 Replies)
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8. Shell Programming and Scripting
Hello all,
I am working on a script and have the first part solved of numerical input validation. Below the code validates that the input is a numerical value between 100 and 1000. If not, it errors out. Now I need to be able to read values separated by a comma. For example, instead of my... (5 Replies)
Discussion started by: LinuxRacr
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9. Shell Programming and Scripting
Hi,
I have a variable which has a list of string separated by comma.
for ex ,
Variable=/usr/bin,/usr/smrshbin,/tmp
How can i get the values between the commas separately using shell scripts.Please help me.
Thanks,
Padmini. (6 Replies)
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10. Shell Programming and Scripting
I'm attempting to create a KSH array out of a string like this: ",,,value1,value2,,"
I have created the array but I only get two elements, one for value1 and one for value2.
I have ended up with something like this but I don't like it:
set -A JUNK
xx=0
for i in $(print ",,,value1,value2,,"... (3 Replies)
Discussion started by: tmarikle
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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)