Currently I am using the following command to catch the Error String in the MY_FILE_NAME*.log
Currentdate=`date -u +"%Y/%m/%d"`
YEST=`TZ=XYZ+24 date '+%Y/%m/%d'`
grep -E "$Currentdate|$YEST" MY_FILE_NAME*.log | grep "Type: Error"
This command is generating huge data with the string "Type: Error" with redundancy in the same error type (in my case the same error is displayed like 100 times)
I want the error strings of same type to be displayed only once
If using GNU/Linux try the '-m' switch
grep -m 1 -E "$Currentdate|$YEST" MY_FILE_NAME*.log | grep "Type: Error"
In the GNU version of grep, the '-m ' switch stops reading the input file after matches are found. This feature does not exist in the older Unix grep on which AIX and similar are built.
If on AIX where there is no -m or -B see this StackOvreflow post
Related
I can't figure out how to print (unix tool) versions within a BusyBox container:
$ docker run -it quay.io/quay/busybox:latest
$ awk --version
awk: unrecognized option `--version'
BusyBox v1.32.0 (2020-08-31 17:40:13 UTC) multi-call binary.
Usage: awk [OPTIONS] [AWK_PROGRAM] [FILE]...
-v VAR=VAL Set variable
-F SEP Use SEP as field separator
-f FILE Read program from FILE
-e AWK_PROGRAM
$ cut --version
cut: unrecognized option `--version'
BusyBox v1.32.0 (2020-08-31 17:40:13 UTC) multi-call binary.
Usage: cut [OPTIONS] [FILE]...
Print selected fields from each input FILE to stdout
-b LIST Output only bytes from LIST
-c LIST Output only characters from LIST
-d CHAR Use CHAR instead of tab as the field delimiter
-s Output only the lines containing delimiter
-f N Print only these fields
-n Ignored
Any suggestions? Many mulled containers are built on top of BusyBox, best I get on top of this.
Thanks
busybox is a single program which acts as one of various tools depending on what name was used to call it. As you can see in the question, it shows its version as BusyBox v1.32.0.
Check which tools are (symbolic) links to busybox. All these are the same program and therefore have the same version, so you might only need the version of busybox and a list of commands linked to it.
According to https://unix.stackexchange.com/q/15895/330217 the best way to display the version of busybox is
busybox | head -1
I'm trying to use the following psql command in a zsh shell to send a query to a database:
psql -Atx $mydburl -v myvar=1 -c "SELECT :myvar"
And I'm getting the following error:
ERROR: syntax error at or near ":"
LINE 1: SELECT :myvar
^
However, when I use a pipe, this works just fine:
echo "SELECT :myvar" | psql -Atx $mydburl -v myvar=1
And it produces the expected result of:
?column?|1
What is going on here?
That's as documented:
-c command
[...]
command must be either a command string that is completely parsable by the server (i.e., it contains no psql-specific features), or a single backslash command.
I need the equivalent of "egrep -a " option in solaris.
Currently this option works fine in Red Hat linux, but we wanted to migrate some code in another server which is in solaris flavour.
So need to know the equivalent of "egrep -a " in solaris.
Thanks.
The feature requested (see manual) is documented
-a
--text
Process a binary file as if it were text; this is equivalent to the --binary-files=text option.
--binary-files=type
If a file's allocation metadata, or if its data read before a line is selected for output, indicate that the file contains binary data, assume that the file is of type type. By default, type is ‘binary’, and grep normally outputs either a one-line message saying that a binary file matches, or no message if there is no match. When matching binary data, grep may treat non-text bytes as line terminators.
If type is ‘without-match’, grep assumes that a binary file does not match; this is equivalent to the -I option.
If type is ‘text’, grep processes a binary file as if it were text; this is equivalent to the -a option.
Warning: ‘--binary-files=text’ might output binary garbage, which can have nasty side effects if the output is a terminal and if the terminal driver interprets some of it as commands.
Solaris grep (see manual) has no such feature. Third-party packages are available, e.g., CSWggrep from OpenCSW.
The -a option is a GNU grep extension which has no POSIX equivalent.
If you have a full Solaris 10 installation, you probably already have GNU grep installed in /usr/sfw/bin/ggrep (the double g is not a typo).
You can then replace the egrep -a ... occurence(s) by:
if [ -x /usr/sfw/bin/ggrep ] ; then
EGREP_A="/usr/sfw/bin/ggrep -E"
else
EGREP_A="egrep -a"
fi
$EGREP_A ...
If not installed, you can easily install that package SUNWggrp from you installation media (CD/DVD).
If for some reason, you can't do it, you need to provide more details about what kind of binary file it is and what pattern you are searching in it.
There are certainly other ways to overcome this issue with standard Solaris tools.
I have an utility script, that displays an information about deployed java app. Here is an example output of this script:
Name: TestAPP
Version : SNAPSHOT
Type : ear, ejb, webservices, web
Source path : /G/bin/app/TESTAPP_LIVE_1.1.9.1.1.ear
Status : enabled
Is it possible to grep Version and source path values using grep command? Right now im able to do this using following command:
| grep Version
But it outputs the whole string (e.g. Version: Snapshot) when i am need only a values (e.g Snapshot to use in further script commands)
grep Version | cut -d ':' -f 2
Here is a pure grep solution.
Use the -P option for regex mode, and -o option for retrieving only what is matching.
grep -Po "(?<=^Version : ).*"
Here is what you would do for Source:
grep -Po "(?<=^Source : ).*"
It uses a postive lookbehind.
Here's a solution using awk if you're interested:
grep Version | awk '{print $3}'
$3 means to print the third word from that line.
Note that:
This displays one word only
This assumes you have spaces between the colon (and therefore the version is actually the third "word"). If you don't, use $2 instead.
My url (http://myhost.com/getuser/Default.aspx?username=b772643) returns the following line of of info always:
John, Thomas;John.B.Thomas#Company.com
I wish to read this line using a shell or bash script without wget/lynx. I'm in a situation where I cannot use any other utility, the perl language etc.
Curl or wget are obviously better for the job but for the record bash and Unix standard commands (cat & printf) can do the job.
ksh introduced shell network internal handling and this has been adopted by bash.
#!/bin/bash
exec 5<> /dev/tcp/myhost.com/80
cat <&5 &
printf "GET /getuser/Default.aspx?username=b772643 HTTP/1.0\r\n\r\n" >&5
One liner:
(echo 'GET /getuser/Default.aspx?username=b772643' > /dev/tcp/myhost.com/80);
so
curl "http://myhost.com/getuser/Default.aspx?username=b772643"
curl "http://myhost.com/getuser/Default.aspx?username=b772643"| sed 's/\(.*\);\(.*\)/\2 \1/' | while read email name; do echo =$email=$name=; done
You could use :
curl "http://myhost.com/getuser/Default.aspx?username=b772643"
and extract the datas from what is returned :)