03-08-2013
9 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
it must be late because I'm sure this is an easy task with grep sed or awk
string would be anything mixing numbers letters and ) ( =
output I need is just the numbers... but I just can't seem to get it to work.
Any tips would be great :) (10 Replies)
Discussion started by: nortypig
10 Replies
2. Shell Programming and Scripting
Hi all
I'm having trouble using MIME's multipart/mixed content type. I just try to send an email with a common body text together with an attachment (.gif). The only output I get is an empty email with no text and an invalid attachment (MS Outlook says it doesn't recognize the attachment type).... (2 Replies)
Discussion started by: Indalecio
2 Replies
3. Shell Programming and Scripting
Searched all over can't figure out how to compare variables of alpha and numeric characters.
Example a script that ask user to enter a password and then ask to repeat the password. (6 Replies)
Discussion started by: monx
6 Replies
4. Shell Programming and Scripting
I need to grep out patterns that matches the following.
1SR2kW-0003XW-8L
Ie a pattern that contain 16 characters and will always be in the same pattern. 6 character, then a -, then 6 character, then a - then 2 character.
I need a way to grep out like we grep out IP address. Here there are... (4 Replies)
Discussion started by: anil510
4 Replies
5. Shell Programming and Scripting
Hi,
I only dip my toe into PERL programming on the odd ocassion so I was wondering if anyone had any ideas as to why the below is happening:
When I run my PERL script the variable values seem to get mixed up.
my $fileName = basename($maxFile,".TXT");
my $currentSeqNum =... (2 Replies)
Discussion started by: chris01010
2 Replies
6. Shell Programming and Scripting
Hello,
I have a file such as this:
chr1
chr2
chr1
chr2
chr3
chr10
chr4
chr5
chrz
chr1AI want to sort it, I use this command:
sort -k1 -th -n testfilebut I get this output, how can I fix this?
chr1
chr1
chr10
chr1A
chr2
chr2 (3 Replies)
Discussion started by: Homa
3 Replies
7. Shell Programming and Scripting
Hi all,
I am new to AWK and I am trying to solve a problem that is probably easy for an expert. Suppose I have the following data file input.txt:
20 35 43
20 23 54
20 62 21
20.5 43 12
20.5 33 11
20.5 89 87
21 33 20
21 22 21
21 56 87
I want to select from all lines having the... (4 Replies)
Discussion started by: naska
4 Replies
8. UNIX for Advanced & Expert Users
I have a text file and each field is separated by semicolon ( ; ). Field number 7 is internally separated by comma ( , ) and pipe ( | ) symbol. I want to sort file based on three different fields which are marked in BOLD.
Here first BOLD field will have numbers upto the length of 9 characters,... (6 Replies)
Discussion started by: jnrohit2k
6 Replies
9. Shell Programming and Scripting
Greetings
I have a file formatted like this:
rhino grey weight=1003;height=231;class=heaviest;histology=9,0,0,8
bird white weight=23;height=88;class=light;histology=7,5,1,0,0
turtle green weight=40;height=9;class=light;histology=6,0,2,0... (2 Replies)
Discussion started by: Twinklefingers
2 Replies
CUT(1) BSD General Commands Manual CUT(1)
NAME
cut -- cut out selected portions of each line of a file
SYNOPSIS
cut -b list [-n] [file ...]
cut -c list [file ...]
cut -f list [-w | -d delim] [-s] [file ...]
DESCRIPTION
The cut utility cuts out selected portions of each line (as specified by list) from each file and writes them to the standard output. If no
file arguments are specified, or a file argument is a single dash ('-'), cut reads from the standard input. The items specified by list can
be in terms of column position or in terms of fields delimited by a special character. Column and field numbering start from 1.
The list option argument is a comma or whitespace separated set of increasing numbers and/or number ranges. Number ranges consist of a num-
ber, a dash ('-'), and a second number and select the columns or fields from the first number to the second, inclusive. Numbers or number
ranges may be preceded by a dash, which selects all columns or fields from 1 to the last number. Numbers or number ranges may be followed by
a dash, which selects all columns or fields from the last number to the end of the line. Numbers and number ranges may be repeated, overlap-
ping, and in any order. It is not an error to select columns or fields not present in the input line.
The options are as follows:
-b list
The list specifies byte positions.
-c list
The list specifies character positions.
-d delim
Use delim as the field delimiter character instead of the tab character.
-f list
The list specifies fields, separated in the input by the field delimiter character (see the -d option). Output fields are separated
by a single occurrence of the field delimiter character.
-n Do not split multi-byte characters. Characters will only be output if at least one byte is selected, and, after a prefix of zero or
more unselected bytes, the rest of the bytes that form the character are selected.
-s Suppress lines with no field delimiter characters. Unless specified, lines with no delimiters are passed through unmodified.
-w Use whitespace (spaces and tabs) as the delimiter. Consecutive spaces and tabs count as one single field separator.
ENVIRONMENT
The LANG, LC_ALL and LC_CTYPE environment variables affect the execution of cut as described in environ(7).
EXIT STATUS
The cut utility exits 0 on success, and >0 if an error occurs.
EXAMPLES
Extract users' login names and shells from the system passwd(5) file as ``name:shell'' pairs:
cut -d : -f 1,7 /etc/passwd
Show the names and login times of the currently logged in users:
who | cut -c 1-16,26-38
SEE ALSO
colrm(1), paste(1)
STANDARDS
The cut utility conforms to IEEE Std 1003.2-1992 (``POSIX.2'').
HISTORY
A cut command appeared in AT&T System III UNIX.
BSD
August 8, 2012 BSD