The default names for fields in awk are:
$0 - whole line
$1 - field 1
$2 - field 2
.........
NF is the number of fields on the line.
You can substitute a variable like "i" for numbers of fields: "$i" is the field
that when i is evaluated, that field number is referenced.
I have a text file of lines like:
A=5|B=7|G=4|C=3|P=4|...
In other words, each line is a pipe-delimited set of pairs of strings of the form "X=Y".
What I want to do is find the token starting with "C", and print it and its value (so I'd want to print "C=3" in the example above).
I'm... (11 Replies)
I am VERY new to unix scripting. I am having trouble parsing a line into fields for further processing.
I have this script:
#bin/sh
cat ztest2.txt | while read line
do
zvar1=`echo $line | cut -f6`
echo "zvar1 is " $zvar1
done
********************
ztest2.txt looks like:
1 ... (2 Replies)
Hello, I have a file with several lines
for example;
I need to extract a line radiusAuthServTotalAccessRequests.0 = 0
and I don't have line #s in the file.
I need to write a script to extract the above line, put a date beside it and parse this line out to another directory / file.
How... (5 Replies)
Hello,
Im very new to PERL and as a project to work on developing my skills at PERL Im trying to parse poker hands.
Ive tried many methods however I cant get the last step.
$yourfile= 'FILENAME';#poker hands to parse
open (FILE, "$yourfile") or die $!;
@lines = <FILE>;
for (@lines) ... (1 Reply)
Hey guys,
I have this file generated by me... i want to create some HTML output from it.
The problem is that i am really confused about how do I go about reading the file.
The file is in the following format:
TID1 Name1 ATime=xx AResult=yyy AExpected=yyy BTime=xx BResult=yyy... (8 Replies)
Hey everyone,
I'm having trouble figuring out how to reformat the following (large) file:
>Cluster 1
0 563nt, >FX2FH6V05GB01A... *
1 405nt, >FX2FH6V05F7LOL... at +/98%
>Cluster 2
0 551nt, >FX2FH6V05FTLO0... at +/98%
1 561nt, >FX2FH6V05F5F1E... *
2 343nt, >FX2FH6V05GBHRK... at +/98%
I... (2 Replies)
So, the beginning of my script will cat & grep a file with the output directed to a new file. The data I have in this file needs to be parsed, read and evaluated.
Basically, I need to identify the latest date/time stamp and then calculate whether or not it is within 15 minutes of the current... (1 Reply)
Hi all
I need to put a command line parser together to parse numeric fields and ranges passed to a script. I'm looking for a bash function that is as elegant and simple as possible.
So the input would be of the following form -
1,2,8-12
This would return -
1,2,8,9,10,11,12
Input can... (7 Replies)
I have a file1 like
ID E2AK1_HUMAN Reviewed; 630 AA.
CC -!- SUBCELLULAR LOCATION: Host nucleus {ECO:0000305}.
ID E1A_ADEM1 Reviewed; 200 AA.
ID E1A_ADES7 Reviewed; 266 AA.
CC -!- SUBCELLULAR LOCATION: Host nucleus... (8 Replies)
I would like to take a fasta file formated like
>0001
agttcgaggtcagaatt
>0002
agttcgag
>0003
ggtaacctga
and use command line perl to move the all sample gt 8 in length to a new file. the result would be
>0001
agttcgaggtcagaatt
>0003
ggtaacctga
cat ${sample}.fasta | perl -lane... (2 Replies)
Discussion started by: jdilts
2 Replies
LEARN ABOUT DEBIAN
plan9-getflags
GETFLAGS(8) System Manager's Manual GETFLAGS(8)NAME
getflags, usage - command-line parsing for shell scripts
SYNOPSIS
getflags $*
usage [ progname ]
DESCRIPTION
Getflags parses the options in its command-line arguments according to the environment variable $flagfmt. This variable should be a list
of comma-separated options. Each option can be a single letter, indicating that it does not take arguments, or a letter followed by the
space-separated names of its arguments. Getflags prints an rc(1) script on standard output which initializes the environment variable
$flagx for every option mentioned in $flagfmt. If the option is not present on the command-line, the script sets that option's flag vari-
able to an empty list. Otherwise, the script sets that option's flag variable with a list containing the option's arguments or, if the
option takes no arguments, with the string 1. The script also sets the variable $* to the list of arguments following the options. The
final line in the script sets the $status variable, to the empty string on success and to the string usage when there is an error parsing
the command line.
Usage prints a usage message to standard error. It creates the message using $flagfmt, as described above, $args, which should contain the
string to be printed explaining non-option arguments, and $0, the program name (see rc(1)). If run under sh(1), which does not set $0, the
program name must be given explicitly on the command line.
EXAMPLE
Parse the arguments for leak(1):
flagfmt='b,s,f binary,r res,x width'
args='name | pid list'
if(! ifs=() eval `{getflags $*} || ~ $#* 0){
usage
exit usage
}
SOURCE
/src/cmd/getflags.c
/src/cmd/usage.c
SEE ALSO arg(3)GETFLAGS(8)