Tip: alternative for NR==FNR in awk Post: 302911558

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Awk: different between NR and FNR

As I know: FNR: The ordinal number of the current record in the current file. NR: The ordinal number of the current record from the start of input. I don't understand really differency between NR and FNR. Who can explain it for me? And give me an example. Thanks

2. Shell Programming and Scripting

awk NR==FNR compare 2 files produce a 3rd

hi, i have two files, both with 3 columns, the 3rd column has common values between the two files and i want to produce a 3rd file with 4 columns. file 1 a, ,b c file 2 a, b ,d I want to compare the 3rd value and if a match print to file 3 with the 3 columns from the first file...

3. UNIX for Dummies Questions & Answers

Multiple Column print after lookup using NR==FNR (awk)

foo.txt FAMID IID AFF SEX Group AgeCat Dis1 Dis2 Dis3 Dis4 Dis5 Dis6 Dis6 AMD0001 Mayo_49542 1 2 AMD 8 1 1 1 1 1 1 1 AMD0002 Mayo_49606 1 1 AMD 3 1 1 1 1 ...

4. UNIX for Dummies Questions & Answers

awk NR==FNR output control

Hi Guys, I have two files: f1: A B C D E F G H f2: A X Y Z f1 has 48000 lines, and f2 has 68. I have been matching f1 $3 to f2 $1, and getting f3: A A B C D E F G I would like f3 too look like this: A X Y Z A B C D E F G

5. Shell Programming and Scripting

Awk FNR==NR question

awk -F'' 'FNR==NR {a=$2; next} {$1=a} 1' $useralias ${entries} >> ${entries}_2 Hi, Is there anyway to alter this command so that if it does not find a match it will just leave the line alone instead of replacing what it doesn't find with a blank space?

6. Shell Programming and Scripting

Quick awk tip :)

how do i "awk" the date after the from only to compare it on a if statement later . filename example: server1-ips-ultranoob-ok_From_2012_21_12-23:40:23_To_2012_21_12-23:49:45.zip what i want o do is compare only the date from the string in "From_2012_21_12" in this case i only want the...

7. Shell Programming and Scripting

Help with Alternative for NR==FNR

Hi, I have an issue with the below script nawk 'NR==FNR{a=$4" "$5}NR>FNR{print NF?$0:a"\n";if(/^cn:/) x=$0}' FS="" in1.txt in2.txt > out1.txt It is taking too long to get a string from in1.text, search for the string in in2.txt and create a new file out1.txt. Is there any alternative way we...

8. Shell Programming and Scripting

awk --> selective printout with FNR

Hi everybody! need some awk-support. i want a line-selective printout of a file. wat i normally will do with ... awk ' FNR==8' sample.txt But now i need the data from line 8, 10 and the following data from line13 to 250 wich is not end of the file. I tried allready to combine it but without...

9. Shell Programming and Scripting

Explanation of FNR in this awk script

To merge mutiple *.tab files as: file1.tab rs1 A A rs2 A A rs3 C C rs4 C Cfile2.ind rs1 T T rs2 T T rs3 G G rs4 G Gand file3.tab rs1 B B rs2 B B rs3 L L rs4 L LOutput： file1.tab file2.tab file3.tab AA TT BB AA TT BB CC GG LL CC GG ...

10. Shell Programming and Scripting

Awk: Assigning a variable to be the value of FNR at a certain line

Sorry for the probably strangely worded title but I don't really know how else to put it. Background context: Post processing LAMMPS simulation data. tl;dr: I'm making two spheres collide, every defined timestep the simulation outputs a bunch of data including total energy of the particles,...

LEARN ABOUT DEBIAN

readahead

readahead(8)						      System Manager's Manual						      readahead(8)

NAME

       readahead - file preloader for boot process optimization

SYNOPSIS

       readahead [options] <file-list> [another-file-list [...]]

DESCRIPTION

       readahead is a files preloader designed to optimize the disk I/O during the boot process.

OPTIONS

       -b, --build
	      build optimised files list only, without sorting.

       -s, --sort
	      build and sort list of files only (implies -b).

       -o, --output <file>
	      write sorted list of files to file.

       -d, --dont-sort
	      preload files described by an already sorted files list.

       -h, --help
	      print the usage information.

       -v, --verbose
	      enable the verbose mode.

       -t, --timing
	      report time spent on each operation.

       -m, --maxsize <max size>
	      maximum size in KiB a file can be in order to be preloaded, default is 10240.

       <file-list> [another-file-list [...]]
	      One or more files containing the list of files to be preloaded or sorted. The files list can be generated by readahead-collector(8).

FILES

       /etc/default/readahead-fedora

SEE ALSO

       readahead-collector(8), readahead(2),

AUTHORS

       Arjan van de Ven <arjan@infradead.org>,
	      Ziga Mahkovec <ziga.mahkovec@klika.si>, Karel Zak <kzak@redhat.com>,

       This manual page was written by Raphael Geissert <geissert@debian.org>

								     July 2011							      readahead(8)

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Awk: different between NR and FNR

Discussion started by: anhtt

2. Shell Programming and Scripting

awk NR==FNR compare 2 files produce a 3rd

Discussion started by: borderblaster

3. UNIX for Dummies Questions & Answers

Multiple Column print after lookup using NR==FNR (awk)

Discussion started by: genehunter

4. UNIX for Dummies Questions & Answers

awk NR==FNR output control

Discussion started by: heecha