i have this script that searches for a pattern.
However it fails if the pattern includes some
special characters. So far, it fails with the
following strings:
1. -Cr
2. $Mj
3. H'412
would a sed or awk be more effective?
i don't want the users to put the (\)
during the search (they... (5 Replies)
Hi all,
How do I extract a value without special characters? I need to extract the value of %Used from below and if its greater than 80, need to send a notification.
I am doing this right now..Its giving 17%..Is there a way to extract the value and assign it to a variable in one step?
df |grep... (3 Replies)
Hi all,
We are facing the following problem in our HP-UX machine: software that manipulates utf-8 encoded strings (e.g. during string cut), fails to correctly manipulate strings (all containing Greek characters) that contain special characters like @, &, # etc. Actually, in different... (3 Replies)
Hi All,
I have a CSV file in which some fields contains special character for ex:-
my file is file 1
cat file1
abcd,bgfht,ngbht,abvc ****
hdlld,hsgdt,bhfy,knht ****
whenever i am trying to put a 4th feild in a variable its giving me list of all the files i have in current... (6 Replies)
I'm using awk '{print $1}' and it works most of the time to print the contents of a mysql query loop, but occationally I get a field with some special character in it, is there a way to tell awk to ignore all special characters between my FS? I have >186K records, so building a list of ALL special... (6 Replies)
Hi Experts.
I'm stuck with the below AWK code where i'm trying to move the records containing any special characters in the last field to a bad file.
awk -F, '{if ($NF ~ /^|^/) print >"goodfile";else print >"badfile"}' filename
sample data
1,abc,def,1234,A *
2,bed,dec,342,* A ... (6 Replies)
grep -i "$line,$opline" COMBO_JUNK|awk -F, '
{
C4+=$4
}
{
}
END {
print C4
}
' OFS=,`
when i run this command in the script.... it o/p all the value as 0 if $line contains any special parameters.....
but the same script if i run in command prompt... it shows... (4 Replies)
This is really frustrating because I can't figure it out.
I'm running a health check script. One of the items I'm checking is the amount of memory on a server. I use the free command, which outputs something like this (excerpt)
Mem: 100 100 100 100
Swap: 100 100 100 100
In my debugging... (5 Replies)
Hello Folks,
Need to bisect strings based on a subset.
Below works good.
echo /a/b/c/d | awk -F"/c/d$" '{print $1}'
/a/b
However, it goes awry with special characters.
echo /a/b/c+/d | awk -F"/c+/d$" '{print $1}'
/a/b/c+/d
Desired output:
/a/b
Escaping the special characters... (11 Replies)
Discussion started by: vibhor_agarwali
11 Replies
LEARN ABOUT DEBIAN
plan9-tail
TAIL(1) General Commands Manual TAIL(1)NAME
tail - deliver the last part of a file
SYNOPSIS
tail [ +-number[lbc][rf] ] [ file ]
tail [ -fr ] [ -n nlines ] [ -c nbytes ] [ file ]
DESCRIPTION
Tail copies the named file to the standard output beginning at a designated place. If no file is named, the standard input is copied.
Copying begins at position +number measured from the beginning, or -number from the end of the input. Number is counted in lines, 1K
blocks or bytes, according to the appended flag or Default is -10l (ten ell).
The further flag causes tail to print lines from the end of the file in reverse order; (follow) causes tail, after printing to the end, to
keep watch and print further data as it appears.
The second syntax is that promulgated by POSIX, where the numbers rather than the options are signed.
EXAMPLES
tail file
Print the last 10 lines of a file.
tail +0f file
Print a file, and continue to watch data accumulate as it grows.
sed 10q file
Print the first 10 lines of a file.
SOURCE
/src/cmd/tail.c
BUGS
Tails relative to the end of the file are treasured up in a buffer, and thus are limited in length.
According to custom, option +number counts lines from 1, and counts blocks and bytes from 0.
Tail is ignorant of UTF.
TAIL(1)