10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
I want to match all occurrence of 01,03,05,07,10,11 at 9th and 10th position of a string .
I tried the following but its also matching characters like 33 or 11 on 9th and 10th position .
sed "/^\{8\}00/d" A.TXT
000000001000
433483433339 <<< wrong
121121211100 <<< wrong
167710000110... (10 Replies)
Discussion started by: boncuk
10 Replies
2. Shell Programming and Scripting
Hi guys,
I am trying to "grep" or "egrep" the following entry out of the file using regex:
MACCDB1 or MACCDB2
The problem is that the file might contain other entries which start with "MACCDB" string.
I was trying to use regex to "grep" the exact pattern but it fails to output the correct... (2 Replies)
Discussion started by: aoussenko
2 Replies
3. Shell Programming and Scripting
Hi guys,
I have a file in the following format:
cmpr5551
cmpr6002
cmpr93
anne 5454
bbro 434
cmprsvc
cmprsvc7
ffgi55
vefe99
cmprsvc8
cmprsvc9
I need to "grep" only the entries which start with "cmpr" followed by the number. All other entries should be excluded.
I was trying to use... (3 Replies)
Discussion started by: aoussenko
3 Replies
4. Shell Programming and Scripting
Hi,
I am trying to write a regex for myscript and need some input from experts.
here is what I must grep for
TICKET{Sapce}{Space}{hyphen}
so here is the example data
TICKET 34554, CT-12345, TICKET 12345: some text here
TICKET 2342, CT-12345, MA-12344: some text here
TICKET... (5 Replies)
Discussion started by: rider29
5 Replies
5. UNIX for Dummies Questions & Answers
I have dates in mm/dd/yy format that I wish to convert to yy-mm-dd format.
()/()/() finds them, but when I try to replace with $3-$1-$2 both kate and kwrite treat it as a text literal. (2 Replies)
Discussion started by: porphyry5
2 Replies
6. Shell Programming and Scripting
I have a basic question regarding * and . while using regex:
# echo 3 | grep ^*$
3
I think I understood why it outputs "3" here (because '*' matches zero or more of the previous character) but I don't understand the output of the following command:
# echo 3 | grep ^.$
#
I thought I... (7 Replies)
Discussion started by: mirage
7 Replies
7. Shell Programming and Scripting
Hi, im sure this is really simple but i cant quite figure it out. how do i test against a word at the beginning of the line but up to the point of a delimiter i.e. ":"
for example if i wanted to test against the user in the /etc/passwd file
peter:x:101:100:peters account:/var/peter:/bin/sh
... (3 Replies)
Discussion started by: hcclnoodles
3 Replies
8. Shell Programming and Scripting
Hi
I have a question on regex
There is a line in a script like
my_file="$(echo SunMonTueWed | sed "s//_&g") "
My question what does the expression _&g do.
Obviously in this example the output is
_Sun_Mon_Tue_Wed
Another question can i use some trick to get the result like... (3 Replies)
Discussion started by: xiamin
3 Replies
9. Shell Programming and Scripting
I have a simple file test.out that contains data in the form of
key1=A|shift1
key2=B|shift2
key3=C|shift3
and so on.
I need to get it to print
A
B
C
I can do it using lookbehind assertion such as this
( ?<==)()
yet I was wondering if there is another way of mutching single... (8 Replies)
Discussion started by: arushunter
8 Replies
10. UNIX for Dummies Questions & Answers
hi,
i got a problem with understanding regular expressions. what i wanna do is
scanning the wtmp logfile for ips and if a specific ip is echoed id like to be a part of a text to be assigned to it.
the scanning is done with
#! /bin/bash
cat wtmp | strings | egrep -o "+\.+\.+\." | sort -u... (6 Replies)
Discussion started by: rocketkids
6 Replies
