Log Parsing

Afternoon forumer's

Im trying to have a if statement perform a check to throw out a string that contains alphanumeric

so anything like ^*&(*"

ive been racking my brain with if statements and checks like

if [ $string = "\^|\*" ]
then
echo "string contains incorrect characters"
fi

however i cant figure it :\

I have the following code to extract two dates using awk, which are then read into two awk variables new and old respectively.
Each dates on the html file pulled with curl request is in this format:
2015-04-06 09:40:37
And two are being extracted
However the strings are being split on white space within the date strings. I tried changing OFS to ',', but it was still splitting incorrectly.
Code:

read dateStrNew dateStrOld < <(curl -k -q "$curl_call" | html2text | gawk '/Newest Sequence/ { new=$3" "$4 }/Oldest Sequence/ \
 {old=$3" "$4}END {OFS=","; print new,old }')  //new = date, old = date

Both parts of the date are being assigned to each variable using $3 and $4, then the space needs to be added back in so that the string can be used afterwards with a date command.

I just can't work out what is wrong, any help would be very much appreciated! Thanks!

hi i have the following file which contains.

HOSTNAME1 randomstring1
HOSTNAME12 randomstring2

id like to change it to

<name>HOSTNAME1</name>
<string>randomstring1</string>

<name>HOSTNAME12</name>
<string>randomstring2</string>

Please help

Hi guys,

I have multiple .csv files with multiple columns/headings, set up essentially like this (obviously more info in the real thing)


Gene Location Ref Var Coverage Function
DMD chrX.... A G 198 exonic
SCN4A chr17.... T C 111 splicing

and so on...

How could I concatenate selected columns into an output file with strings seperated with a comma? eg DMD,A,G,exonic (similar to what you can do in excel). I would like to be able to do this for multiple files in a directory. It would be preferable if all the outputs could be compiled into one file as I'll use this for something else later.
The current protocol in our team is to concatenate each file individually with an excel macro and copy into a file, and it takes a very long time.

Thanks very much!!

Hi All,

Using grep command with a defined string, you will get the row. Can I get the column instead of row? For example,

the file content is as below:

AA BB
123 456
789 ABE

execute 'grep ABE file' will give you "789 ABE". Is there any way to get the column:
BB
456
ABE
?

Thank you very much.

Hi,

Right now on my system i have 5/6 users in my /etc/passwd file but all of them are in clear.
I know that normally encrypted passwords are in /etc/shadow and i know that the commands cryptpw and mkpasswd can be used to encrypt a string of character.

If for example an user is like this in passwd :

banana:lasagna:3:0:food:/:/bin/sh

Do i have to edit manually the shadow file with the encrypted string corresponding to "lasagna" here ? And what must i write in this shadow file ?

Thank you for the future answers !

Hello
I am working on Red Hat 6.4 Enterprise Server.Here commands systemctl and systemd are not working.Error comes command not found.I am using service command in place of systemctl to start,stop,enable and disable service etc.
example service httpd start
Also I am not able to install any software or package by using yum command.Whenever I try to install a package through yum the below error comes
Loaded plugins: product-id, refresh-packagekit, security, subscription-manager
This system is not registered to Red Hat Subscription Management. You can use subscription-manager to register.
Repository 'repository_url': Error parsing config: Error parsing "baseurl = 'repository_url'": URL must be http, ftp, file or https not ""
Setting up Install Process
Nothing to do
Please advice some other commands or what to do.Regards Najam

Hi ,

Please explain what the below command means ..


Code:

if grep -c -i Y $INIFILE > /dev/null

I know what is the use of grep, it is used for finding a character or string in a file. But i could not understand the above form of grep command.

I am new to linux so this might be a simple question, but please throw some light on it.


Edited

And also please explain why they are creating a file in null in the below command

Code:

cat /dev/null > $DATA_DIR/$DATAFILE

following error shown when i tried the command:
cd ns-allinone-2.27/ &&export CC=gcc41 CXX=g++41 && ./install


============================================================
* Testing for Cygwin environment
============================================================
Cygwin not detected, proceeding with regular install.
============================================================
* Build XGraph-12.1
============================================================
loading cache ./config.cache
checking for a BSD compatible install... /usr/bin/install -c
checking whether build environment is sane... yes
checking whether make sets ${MAKE}... yes
checking for working aclocal... found
checking for working autoconf... found
checking for working automake... found
checking for working autoheader... found
checking for working makeinfo... missing
checking if malloc debugging is wanted... no
checking for gcc... gcc41
checking whether the C compiler (gcc41 ) works... no
configu error: installation or configuration problem: C compiler cannot create executables.
make: *** No targets specified and no makefile found. Stop.
Can not create xgraph; But xgraph is an optional package, continuing...
============================================================
* Build CWeb
============================================================
Making cweb
gcc -g -c -o ctangle.o ctangle.c
ctangle.w:75:12: warning: conflicting types for built-in function ‘strlen’ [enabled by default]
gcc -g -DCWEBINPUTS=\"/usr/local/lib/cweb\" -c common.c
common.w:1409:12: warning: conflicting types for built-in function ‘strlen’ [enabled by default]
common.w: In function ‘fatal’:
common.w:1176:1: warning: format not a string literal and no format arguments [-Wformat-security]
gcc -g -o ctangle ctangle.o common.o
gcc -g -c -o cweave.o cweave.c
cweave.w:79:12: warning: conflicting types for built-in function ‘strlen’ [enabled by default]
cweave.w: In function ‘print_cat’:
cweave.w:1739:1: warning: format not a string literal and no format arguments [-Wformat-security]
gcc -g -o cweave cweave.o common.o
ln: failed to create symbolic link `cweave': File exists
ln: failed to create symbolic link `ctangle': File exists
============================================================
* Build Stanford GraphBase
============================================================
Making sgb
gcc41 -g -I/usr/local/sgb/include -DDATA_DIRECTORY=\"/usr/local/sgb/data/\" -c gb_io.c
make: gcc41: Command not found
make: *** [gb_io.o] Error 127
Unable to create sgb library, but it's optional, so continuing...
============================================================
* Build GT-ITM
============================================================
sgb lib not found. gt-itm & sgb2ns could not be installed. Continuing..
============================================================
* Build zlib
============================================================
Building static library libz.a version 1.1.4 with gcc41.
Checking for unistd.h... No.
Checking for errno.h... No.
Checking for mmap support... No.
gcc41 -O -DNO_ERRNO_H -c -o example.o example.c
make: gcc41: Command not found
make: *** [example.o] Error 127
Zlib make failed, but it's optional Continue ...
============================================================
* Build tcl8.4.5
============================================================
loading cache ./config.cache
checking whether to use symlinks for manpages... no
checking compression for manpages... no
checking for gcc... gcc41
checking whether the C compiler (gcc41 ) works... no
configu error: installation or configuration problem: C compiler cannot create executables.
tcl8.3.2 configuration failed! Exiting ...
Tcl is not part of the ns project. Please see www.Scriptics.com
to see if they have a fix for your platform.



please help

Bash interactive behavior is started when the bash command is called upon without non-option arguments, except when the option is a string to read from or when the shell is invoked to read from standard input, which allows for positional parameters to be set.