09-01-2011
Quote:
Originally Posted by
Corona688
grep "^${ID}:" users.db > /dev/null then. ^ means beginning of the line.
thank you!!
Another question:
how would i be a really cool way (the way u do it) to retrive the one b4 the last ":".
Shall i use "cut" and "tr" or there is an easier way?
also how could i save it to an array? ( you will prob know how to do it in 1 step and i would do it in 300)
Thank you so much!!... you prob saved me 4 hrs trying to figure it out and it would never look as neat!
---------- Post updated at 03:38 PM ---------- Previous update was at 03:27 PM ----------
Btw i ran the program and it returns an error after i written down the string
Quote:
1: line 5 p: [missing ']'
and it doesnt show any message
why is that?
---------- Post updated at 03:50 PM ---------- Previous update was at 03:41 PM ----------
Quote:
#!/bin/bash
while true
do
read -p "Please enter staff ID: " cSID
if [ "${#cSID}" -ne 3]
then
echo "wrong number of digits"
continue
fi
if ! [ -z "${cSID/[0-9]*/}" ]
then
echo "Not all digits"
continue
fi
if grep "^${cSID}:" users.db > /dev/null
then
echo "The string '$cSID' exists anywhere at all in users.db"
continue
fi
break # get out of loop
done
Last edited by thurft; 09-01-2011 at 05:50 PM..
10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
Hi All,
I have absolutely no experince with either one, and would LOVE to start from somewhere! So please guide me to some web sites (beside these great forums of course!) that I can obtain n00b information. (Books, links, resources, etc.)
What software OS? should I begin with? I have heard... (2 Replies)
Discussion started by: CodeHunter
2 Replies
2. UNIX for Dummies Questions & Answers
Hi,
have a basic query.
Please see the below code:
list="one two three"
for var in $list ; do
echo $var
list="nolist"
Done
Wht if I want to print only first/ last line in the list
Eg one & three
Regards
er_ashu (3 Replies)
Discussion started by: er_ashu
3 Replies
3. Shell Programming and Scripting
need some help badly.
if i had a file with content of few lines like the followings.
1183724770.651 0.049 137.157.56.169 200 415 GET http://venus/client/clients.xml "text/xml"
1183724770.651 0.049 141.183.101.250 200 415 GET http://venus/client/clients.xml "text/xml"
using what command... (1 Reply)
Discussion started by: akagi07
1 Replies
4. Programming
Hey guys,
This is quite simply what I'm trying to make:
A program that runs in a UNIX terminal that you can output text messages to from another machine. These text messages would be prepended with a customized prompt. I'd also like to have the window spew out random dumps of flavor text not... (1 Reply)
Discussion started by: AcerAspirant
1 Replies
5. Shell Programming and Scripting
Hey Guys!
I was hoping for some help with a simple script I'm trying to use. I have the script set up to pull some simple information out of a database .txt file and sed it into a preexisting template for assignment cover letters. The problem seems to be someplace in the sed statement but I... (5 Replies)
Discussion started by: BFeicht
5 Replies
6. Shell Programming and Scripting
Howdy People :),
I'm a newbie & its my first question here. I've started learning Unix Bourne Shell scripting recently and struggling already :p Can someone PLEASE help me with the following problem. Somehow my script is not working.
Display an initial prompt of the form:
Welcome to... (1 Reply)
Discussion started by: methopoth
1 Replies
7. Shell Programming and Scripting
Hi,
I am very new to this forum, can any one tell me which is the very basic certification on unix shell scripting?
please give me an advice on this. (1 Reply)
Discussion started by: Manjesh
1 Replies
8. Shell Programming and Scripting
I need to read input from a file, and make sure nothing prints after column 72.
basically, ignore input after character 72 until the next newline character.
Any help is appreciated. I have been searching forever! (10 Replies)
Discussion started by: Gbear
10 Replies
9. UNIX for Dummies Questions & Answers
Hi,
Sorry if this is a newbie question. I guess you can use either awk or shell script for this sequence of operations, but knowing very little about either of them I'm not sure how I should try to write this.
The basic objective is to copy certain files that are scattered all over my... (10 Replies)
Discussion started by: pc2001
10 Replies
10. Shell Programming and Scripting
Oracle Linux : 6.4/bash shell
In the below I want to break out of the loop when it enters the 5th iteration.
#!/bin/bash
for i in 1 2 3 4 5 6
do
echo "$i"
if
echo "Oh Nooo... i = $i. I need to stop the iteration and jump out of the loop"
then break
fi
done
But, it only... (3 Replies)
Discussion started by: John K
3 Replies