I need to check ftp'd incoming files for characters that are not alphanumeric,<tab>, <cr>, or <lf> characters. Each file would have 10-20,000 line with up to 3,000 characters per line. Should I use awk, sed, or grep and what would the command look like to do such a search? Thanks much to anyone... (2 Replies)
Sometimes obvious things... are not so obvious. I always thought that it was possible to grep non printable characters but not with my GNU grep (5.2.1) version.
printf "Hello\tWorld" | grep -l '\t'
printf "Hello\tWorld" | grep -l '\x09'
printf "Hello\tWorld" | grep -l '\x{09}'
None of them... (3 Replies)
I have been using OKI data Microline printers; models 590 and 591 to print a bar code using the following escape sequence:
\E^PA^H^C00^D^C^A^A^A\E^PB^H
The escape sequence is stored in a unix file which is edited using vi.
Now, we are considering Microline printer model 395C and the bar code... (3 Replies)
Hi,
We have a non printable character "®" in our file , we want to remove this character, we tried tr -dc '' < oldfile> newfile but this command is removing all new line entries along with the non printable character and all the records are coming in one line(it is changing the format of the... (2 Replies)
Hi,
in a file, i have records as below:
123|62|absnb|267629
123|267|28728|uiuip
123|567|26761|2676
i want to remove the non printable characters after the end of each record.
I guess there are certain charcters but not visible.
i don't know what character that is exactly.
I used... (2 Replies)
sed -e "s// /g" old.txt > new.txt
While I do know some control characters need to be escaped, can normal characters also be escaped and still work the same way? Basically I do not know all control characters that have a special meaning, for example, ?, ., % have a meaning and have to be escaped... (11 Replies)
Hallo Team,
I am trying to get rid of the dollar sign. I managed to remove all the other special characters but i am struggling with this one.
-bash-3.2$ cat -e missing_revenue_20141112.csv|less|head
BW0522168531211141180935668@196.23.110.141$
BW092218784121114-370120610@196.23.110.141$... (4 Replies)
Hi All,
I am trying to find non-printable characters in a string. The sting could have alphanumeric, puntuations and characters like (*&%$#.') but not non-printable (or that is what I think they are called) which are introduced when you copy any text from DOS to unix box.
Input string1:... (10 Replies)
Hi,
I have a huge file (50 Mil rows) which has certain non-printable ASCII characters in it. I am cleaning the file by deleting those characters using the following command -
tr -cd '\11\12\15\40-\176' < unclean_file > clean_file
Please note that I am excluding the following -
tab,... (6 Replies)
Discussion started by: rishigc
6 Replies
LEARN ABOUT DEBIAN
bbhostgrep
BBHOSTGREP(1) General Commands Manual BBHOSTGREP(1)NAME
bbhostgrep - pick out lines in bb-hosts
SYNOPSIS
bbhostgrep --help
bbhostgrep --version
bbhostgrep [--noextras] [--test-untagged] [--bbdisp] [--bbnet] TAG [TAG...]
DESCRIPTION bbhostgrep(1) is for use by extension scripts that need to pick out the entries in a bb-hosts file that are relevant to the script.
The utility accepts test names as parameters, and will then parse the bb-hosts file and print out the host entries that have at least one
of the wanted tests specified. Tags may be given with a trailing asterisk '*', e.g. "bbhostgrep http*" is needed to find all http and https
tags.
The bbhostgrep utility supports the use of "include" directives inside the bb-hosts file, and will find matching tags in all included
files.
If the DOWNTIME or SLA tags are used in the bb-hosts(5) file, these are interpreted relative to the current time. bbhostgrep then outputs
a "INSIDESLA" or "OUTSIDESLA" tag for easier use by scripts that want to check if the current time is inside or outside the expected uptime
window.
OPTIONS --noextras
Remove the "testip", "dialup", "INSIDESLA" and "OUTSIDESLA" tags from the output.
--test-untagged
When using the BBLOCATION environment variable to test only hosts on a particular network segment, bbtest-net will ignore hosts that
do not have any "NET:x" tag. So only hosts that have a NET:$BBLOCATION tag will be tested.
With this option, hosts with no NET: tag are included in the test, so that all hosts that either have a matching NET: tag, or no
NET: tag at all are tested.
--no-down[=TESTNAME]
bbhostgrep will query the Xymon server for the current status of the "conn" test, and if TESTNAME is specified also for the current
state of the specified test. If the status of the "conn" test for a host is non-green, or the status of the TESTNAME test is dis-
abled, then this host is ignored and will not be included in the output. This can be used to ignore hosts that are down, or hosts
where the custom test is disabled.
--bbdisp
Search the bb-hosts file following include statements as a BBDISPLAY server would.
--bbnet
Search the bb-hosts file following include statements as a BBNET server would.
EXAMPLE
If your bb-hosts file looks like this
192.168.1.1 www.test.com # ftp telnet !oracle
192.168.1.2 db1.test.com # oracle
192.168.1.3 mail.test.com # smtp
and you have a custom Xymon extension script that performs the "oracle" test, then running "bbhostgrep oracle" would yield
192.168.1.1 www.test.com # !oracle
192.168.1.2 db1.test.com # oracle
so the script can quickly find the hosts that are of interest.
Note that the reverse-test modifier - "!oracle" - is included in the output; this also applies to the other test modifiers defined by Xymon
(the dialup and always-true modifiers).
If your extension scripts use more than one tag, just list all of the interesting tags on the command line.
bbhostgrep also supports the "NET:location" tag used by bbtest-net, so if your script performs network checks then it will see only the
hosts that are relevant for the test location that the script currently executes on.
USE IN EXTENSION SCRIPTS
To integrate bbhostgrep into an existing script, look for the line in the script that grep's in the $BBHOSTS file. Typically it will look
somewhat like this:
$GREP -i "^[0-9].*#.*TESTNAME" $BBHOSTS | ... code to handle test
Instead of the grep, we will use bbhostgrep. It then becomes
$BBHOME/bin/bbhostgrep TESTNAME | ... code to handle test
which is simpler, less error-prone and more efficient.
ENVIRONMENT VARIABLES
BBLOCATION
If set, bbhostgrep outputs only lines from bb-hosts that have a matching NET:$BBLOCATION setting.
BBHOSTS
Filename for the Xymon bb-hosts(5) file.
FILES
$BBHOSTS
The Xymon bb-hosts file
SEE ALSO bb-hosts(5), hobbitserver.cfg(5)Xymon Version 4.2.3: 4 Feb 2009 BBHOSTGREP(1)