Hi,
I am new to UNIX Scripting. I have been trying to use the CUT command to retrieve part of the header from a file and assign it to a variable. I have tried searching a lot, but I am still unsuccessful.
Sample Header: HJAN BALANCE 20090616
I need to retrieve the date here, which always... (10 Replies)
greetings all,
I am have a heck of a time trying to accomplish a very simple thing. I have an array of "shortname<spaces>id" created from a dscl output. I want to assign shortname=word1 and id=word2. I have tried
shortname=$(${textArray} | awk '{print $1}') - and get 'awk : cannot open... (3 Replies)
I'm running a bash script query and assigning the output to a variable like this:
exists=`mysql -u $USER_NAME --password=$PASSWORD -D "somedb" \
-e "SELECT * FROM somedb.sometable WHERE field1 ='$a' \
AND field2 ='$b' LIMIT 0 , 30";`
which returns something like:
echo... (2 Replies)
Hi ,I am trying to assign string to variable ,but it doesn't work
Also could you show me different ways to use grep,(I am trying to get the first,second and first column form file,and I am counting the chars)
let name=`grep "$id" product | cut -c6-20` (25 Replies)
Hi, wondering if it's been asked before but didn't find matches from google. Basically I have this line:
myvar=$(echo -e "a\tb")
Now somehow the '\t' from the echo output gets replaced with white space and then stored in $myvar.
It creates a problem for me later to use tab as delimiter to do... (2 Replies)
Hello All,
Hope you're doing well !
I am trying below command to be passed in a shell script, header_date_14 is a variable and $1 is the name of a file I intend to pass as a command line argument, however command line argument is not being accepted.
header_date_14=$(m_dump... (8 Replies)
In the else of the main if condition .
else
set lnk = $(readlink -f <path> | cut -d '/' -f7)
echo "$lnk"
if ]
When I run the above on command line , the execution seems to be fine and I get the desired output. But when I try to assign it to a variable within a loop... (12 Replies)
Hi,
I have the script below. When i assign SSH_COMMAND to "ssh -o ConnectTimeout=2 ${SERVER} ${AS_SUDO} ${COMMANDS}" and then execute it as ${SSH_COMMAND} I get the following error:
ssh: Could not resolve hostname sudo: Name or service not known
ssh: Could not resolve hostname sudo: Name or... (3 Replies)
Hi,
I am attempting to assign the output of the following command, to two bash variables, var1 and var2 using "read," but it doesn't seem to be working.
# openstack hypervisor stats show | awk -F'|' 'NR==14{print $2,$3}'
vcpus 92
# echo $?
0
# openstack hypervisor... (4 Replies)
Discussion started by: sand1234
4 Replies
LEARN ABOUT DEBIAN
txt2regex
TXT2REGEX(1) General Commands Manual TXT2REGEX(1)NAME
txt2regex - a Regular Expression Wizard, written with bash2 builtins
SYNOPSIS
txt2regex
txt2regex --nocolor|--whitebg
txt2regex --all|--prog <p1,p2,...,pN>
txt2regex --showmeta|--showinfo <program>
txt2regex --make <target>
txt2regex --history <value>
DESCRIPTION
txt2regex is a Regular Expression "wizard", all written with bash2 builtins, that converts human sentences to regexes.
With a simple interactive interface, you just answer to questions and build your own regex for a large variety of programs, like awk,
emacs, grep, perl, php, procmail, python, sed and vim. There are more than 20 supported programs.
It's bash so download and run, no compilation needed.
Please visit the program homepage at http://txt2regex.sf.net.
OPTIONS --all works with all registered programs
--help prints the help message and quit
--history <value>
prints to STDOUT a regex from a history data
--make <target>
prints a ready regex for a common pattern
--nocolor
self-explanatory
--prog <p1,p2,...>
choose which programs to use (separated by commas)
--showinfo <program>
prints regex info about the program
--showmeta
prints a complete metachar table for all programs
--version
prints the program version and quit
--whitebg
colors adjusted to white background terminals
By default, all options are turned OFF. Just call it with no options to launch the default interactive interface.
DETAILS --all is cool but requires lots of lines (~35)
--nocolor is strong, so it kills --whitebg
--showmeta rules, try it
--showinfo uses reverse video output, --nocolor turns it off
--history is getting useful, stay tunned
--make is a remedy for headaches
--prog is nice to use your favorite programs, mix it with --make and --history
EXAMPLES
Calling the program on the default interactive interface
$ txt2regex
Calling the program on a white terminal
$ xterm -fg black -bg white ; txt2regex --whitebg
Getting information
$ txt2regex --showmeta
Getting specific information
$ txt2regex --showinfo sed
Calling it for specific programs
$ txt2regex --prog vim,sed,grep,python
Applying a history data
$ txt2regex --history '16421x:01x:'
Getting ready regexes!
$ txt2regex --make hour
$ txt2regex --make number3 --prog perl
$ txt2regex --make date2 --all
INTERFACE
The program interface is simple and easy to use. This is its contents:
+---------------------------------------+
| -> Top menu |
| -> Group menu |
| |
| -> Regexes of the programs selected |
| ... |
| ... |
| |
| -> History |
| -> Your prompt |
| |
| -> The question |
| -> The answers |
| ... |
| ... |
+---------------------------------------+
All the basic commands can be used on the numeric pad on the keyboard, but remember to turn ON the NumLock key.
Command Description
. Quit the program (with confirmation)
0 Reset the Regular Expression
1-9 Answers the questions
* Toggles color ON/OFF
/ Add/remove programs on/from the list
| Insert an alternation (where allowed)
( Open a new group (where allowed)
) Close the opened group (if any)
BUGS
Bug reports and contributions are VERY welcome! Please send them to the author.
AUTHOR
Written and maintained by Aurelio Marinho Jargas <verde@aurelio.net>
COPYRIGHT
Copyright (C) 2000, 2001, 2002, 2003, 2004 Aurelio Marinho Jargas
This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICU-
LAR PURPOSE.
September, 28th - 2004 TXT2REGEX(1)