ps a process keeping the header info so you know what the columns of numbers mean!

• format txt as table not joining empty columns adding header with column numbers

  This version now adds a header with consecutive numbering. Show Sample Output

  This is sample output - yours may be different.

  cat file.csv
  column_a;column_b;column_c
  a;b;c
  ;b;c
  a;b;
  
  cat file.csv | perl -pe 'if($. == 1) {@h = split(/;/); $i = 1 ; map { $_ = $i; $i++ } @h; print join(" ;", @h) , "\n"} ; s/(^|;);/$1 ;/g' | column -ts\;
  1         2         3
  column_a  column_b  column_c
  a         b         c
            b         c
  a         b
  

  
  

  0
  cat file.csv | perl -pe 'if($. == 1) {@h = split(/;/); $i = 1 ; map { $_ = $i; $i++ } @h; print join(" ;", @h) , "\n"} ; s/(^|;);/$1 ;/g' | column -ts\; | less -S
  bashrc · 2011-08-31 12:52:02 1
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• df output, sorted by Use% and correctly maintaining header row

  Show disk space info, grepping out the uninteresting ones beginning with ^none while we're at it. The main point of this submission is the way it maintains the header row with the command grouping, by removing it from the pipeline before it gets fed into the sort command. (I'm surprised sort doesn't have an option to skip a header row, actually..) It took me a while to work out how to do this, I thought of it as I was drifting off to sleep last night! Show Sample Output

  This is sample output - yours may be different.

  Filesystem            Size  Used Avail Use% Mounted on
  /dev/sdb1             147G   64G   77G  46% /home
  /dev/sdd1              15G  5.3G  9.7G  36% /media/PLAY16
  /dev/sdc1             1.4T  403G  904G  31% /data
  /dev/sda1             141G  6.3G  128G   5% /

  
  

  0
  df -h | grep -v ^none | ( read header ; echo "$header" ; sort -rn -k 5)
  purpleturtle · 2011-03-16 14:25:45 1
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• Add page numbers to a PDF

  Put this code in a bash script. The script expects the PDF file as its only parameter. It will add a header to the PDF containing the page numbers and output it to a file with the suffix "-header.pdf" Requires enscript, ps2pdf and pdftk.

  This is sample output - yours may be different.

  
  

  1
  enscript -L1 -b'||Page $% of $=' -o- < <(for i in $(seq "$(pdftk "$1" dump_data | grep "Num" | cut -d":" -f2)"); do echo; done) | ps2pdf - | pdftk "$1" multistamp - output "${1%.pdf}-header.pdf"
  captaincomic · 2012-01-27 12:26:33 2
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• Display rows and columns of random numbers with awk

  Displays six rows and five columns of random numbers between 0 and 1. If you need only one column, you can dispense with the "for" loop. Show Sample Output

  This is sample output - yours may be different.

  0.237788 0.291066 0.845814 0.152208 0.585537 
  0.193475 0.810623 0.173531 0.484983 0.151863 
  0.366957 0.491736 0.910094 0.265257 0.893188 
  0.220351 0.631798 0.571077 0.332158 0.104455 
  0.502931 0.567394 0.854165 0.040141 0.108022 
  0.639396 0.013111 0.720184 0.101814 0.482945

  
  

  3
  seq 6 | awk '{for(x=1; x<=5; x++) {printf ("%f ", rand())}; printf ("\n")}'
  kaan · 2009-03-24 21:33:38 0
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Great command! How do I not show the egrep process? square brackets don't seem to work.

Williebee · 486 weeks and 6 days ago

@ Willie: ps auxw |egrep "[P]ID|[f]irefox" seems to work for me

Ward · 442 weeks ago

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