@Rudi how is it checking if the id matches ? For example, I tried the code on this file 2.vcf that looks like this
The code should return that the ID 44 in the file does not match with the file name 2.vcf, it returns a value of 1.
VCF (variant call format) is only text tab delimited file
Hi All,
In my script I am trying to input data from user and I want the promt to appear again if the input data is not the one expected.
I tried something like this:
echo " \n\n\t Enter the dump filename:\c";read dump
pst=${dump##*.}
until (test $pst = dmp)
do
... (7 Replies)
Hi, im have log file ~100000 lines,
192.168.29.1 at 10/08/09 13:58:55
192.168.60.1 at 10/08/09 14:11:28
192.168.58.171 at 10/08/09 14:12:45
192.168.61.12 at 10/08/09 14:15:44
192.168.60.1 at 10/08/09 14:16:36
192.168.60.1 at 10/08/09 14:17:43
192.168.61.12 at 10/08/09 14:18:08... (9 Replies)
Hi
I have files with names that contain the date in several formats as, YYYYMMDD, DD-MM-YY,DD.MM.YY or similar combinations.
I know if a file fits in one pattern or other, but i donīt know how to extract the substring contained in the file that matches the pattern.
For example, i know that
... (1 Reply)
I know how to check if any file has a unix process using a file by looking at 'lsof <fullpath/filename>' command.
I think using lsof is very expensive. Also to make it accurate we need to inlcude fullpath of the file.
Is there another command that can tell if a file has a truely active... (12 Replies)
Hi All
I have a rather large text file of approx 1m records in the format:-
20110877837-2.PDF
20100298984-3.PDF
et al...
I want to run uniq against the file to make sure there are no duplicate names.....
uniq -d /path/to/input/file.txt
However this is not producing any... (1 Reply)
I am using grep to match a pattern, but the output is strange.
$ grep -r -o "pattern" *
Gives me:
Binary file foo1 matches
Binary file foo2 matches
Binary file foo3 matches
To find the lines before/after, I then have to use the following on each file:
$ strings foo1 | grep -A1 -B1... (0 Replies)
Hi,
I am trying to write a script where I need to pull any file if the date is from yesterday. Can you please help me on how to check the dates for the files on the remote server?
Please let me know for any questions.
Thanks
Ajay (4 Replies)
i had requirement like i need to get "error" line of above 3 and below 3 from a file .I tried with the below script.But it's not working.
y='grep -n -i error /home/file.txt|cut -c1'
echo $y
head -$y /home/file.txt| tail -3 >tmp.txt
tail -$y /home/file.txt head -3 >>tmp.txt (4 Replies)
I have a file comp.pkglist which mention package version and release . In 'version change' and 'release change' line there are two versions 'old' and 'new' Version Change: --> Release Change: -->
cat comp.pkglist
Package list: nss-util-devel-3.28.4-1.el6_9.x86_64
Version Change: 3.28.4 -->... (1 Reply)
hi all,
trying this using shell/bash with sed/awk/grep
I have two files, one containing one column, the other containing multiple columns (comma delimited).
file1.txt
abc12345
def12345
ghi54321
...
file2.txt
abc1,text1,texta
abc,text2,textb
def123,text3,textc
gh,text4,textd... (6 Replies)
Discussion started by: shogun1970
6 Replies
LEARN ABOUT PLAN9
regexp
REGEXP(6) Games Manual REGEXP(6)NAME
regexp - regular expression notation
DESCRIPTION
A regular expression specifies a set of strings of characters. A member of this set of strings is said to be matched by the regular
expression. In many applications a delimiter character, commonly bounds a regular expression. In the following specification for regular
expressions the word `character' means any character (rune) but newline.
The syntax for a regular expression e0 is
e3: literal | charclass | '.' | '^' | '$' | '(' e0 ')'
e2: e3
| e2 REP
REP: '*' | '+' | '?'
e1: e2
| e1 e2
e0: e1
| e0 '|' e1
A literal is any non-metacharacter, or a metacharacter (one of .*+?[]()|^$), or the delimiter preceded by
A charclass is a nonempty string s bracketed [s] (or [^s]); it matches any character in (or not in) s. A negated character class never
matches newline. A substring a-b, with a and b in ascending order, stands for the inclusive range of characters between a and b. In s,
the metacharacters an initial and the regular expression delimiter must be preceded by a other metacharacters have no special meaning and
may appear unescaped.
A matches any character.
A matches the beginning of a line; matches the end of the line.
The REP operators match zero or more (*), one or more (+), zero or one (?), instances respectively of the preceding regular expression e2.
A concatenated regular expression, e1e2, matches a match to e1 followed by a match to e2.
An alternative regular expression, e0|e1, matches either a match to e0 or a match to e1.
A match to any part of a regular expression extends as far as possible without preventing a match to the remainder of the regular expres-
sion.
SEE ALSO awk(1), ed(1), sam(1), sed(1), regexp(2)REGEXP(6)