I've written a script to collect all audit logs files; now i want to see only the files from it which contains certain x tablenames. I've stored all the tablenames in a log file and using it through variable in a script (ex:below)
In a script:
How do we use a variable or a logfile to grep
thanks in advance..
Last edited by Franklin52; 01-07-2010 at 05:59 AM..
Reason: Please use code tags!
hi all,
i'm new to shell scripting, so i'm not sure how to work this. Is it possible to read in the contents of a variable and add it to a command? for example:
------------------------
#!/bin/sh
set example = -dfr
rm ${example}
------------------------
when i run the script, i want... (2 Replies)
Hi,
I am receving a file from remote site which has EDI information for 830, 862 and 997 and I want to extect the data for 997 using grep's or any other methods.
The data look like this:
ISA~000
0000-0001-1000~997
AK1000~m
000~IEA~M
ISA~000
0000-0001-1000~849
000~IEA~M
ISA~000... (11 Replies)
I want to save the contents of a variable to a file. How can that be achieved?
I have tried with:
echo $varname > textfile.txt
but for some reason it does not print anything. (1 Reply)
Hi ,
I have
#echo $var1
#hdisk2 hdisk3 hdisk0 hdisk2
Now I need to remove duplicate entries from this . ie. after sorting it should only have
hdisk2 hdisk3 hdisk0 .
I can have these values in a array as well . I understand we can use sort -u to remove the duplicates in a... (2 Replies)
Hi,
Can I get the simple unix command or script to get the output as mentioned below.
Input Contents:
Processing file: home/j2ee-apps/web-estore/123.txt
File: 123.txt Status: Locally Added
Processing file: home/j2ee-apps/web-estore/META-INF/application.xml
Processing file:... (4 Replies)
My file is in this format :
username : student information : default shell : student ID
Eg :
joeb:Joe Bennett:/bin/csh:1234
jerryd:Jerry Daniels:/bin/csh:2345
deaverm: Deaver Michelle:/bin/bash:4356
joseyg:Josey Guerra:/bin/bash:8767
michaelh:Michael Hall:/bin/ksh:1547
I have to... (1 Reply)
Hi,
after issuing metastat command I am getting output as follows
Actually these soft partitions are more than 100.
I want output as Device Name & Size.
for eg d4004 2.0 GB (4 Replies)
Hi one of the output of the command is as below
# sed -n "/CCM-ResourceHealthCheck:/,/---------/{/CCM-ResourceHealthCheck:/d;/---------/d;p;}" Automation.OutputZ$zoneCounter | sed 's/$/<br>/'
Resource List : <br>
*************************** 1. row ***************************<br>
... (2 Replies)
hi,
I'm trying to grep content from one file in another file.
The file that I'm searching into is large and hence I need to temporarily unzip it first.
gzip -dc ALL.chr2.phase3_shapeit2_mvncall_integrated_v5a.20130502.genotypes.vcf.gz | grep '169997024\|190670539\|128051369' >... (2 Replies)
i want to reduce the OPTIONS variable which is a list of email addresses to just the unique entries. The following works, but, i would like to accomplish it without using the temporary file (dest.txt)
$echo $OPTIONS
a b c A B D ... (5 Replies)
Discussion started by: jgt
5 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)