unix - how to extract rows in a big table based on a list file containing the specific names in linux -

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i have big data table (datatable.txt), snapshot below:

snpname chr position sample1 sample2 sample3 sample4 ....sample2000 rs1 1 1000 a b b ..... rs2 2 1500 b b ..... b rs3 3 1503 b b a ..... . . . . rs99999 22 999999 a ...... b

and have list of snpnames want include in output table (other snpnames not in list excluded). list (list.txt) below:

rs4560 rs4780 rs6 rs798 rs2634 rs987 rs1839 rs3948 rs2423 rs232

how can produce new output table contains snpnames listed in list file?

please advise, thank you. :)

you can use example this:

grep -wff list.txt datatable.txt
  • -w matches words.
  • -f gets patterns file list.txt.
  • -f compares strings such, not possible regular expressions.

based on sample input, , changing rs3 rs6 have match, get:

$ grep -wff list.txt datatable.txt rs6 3 1503 b b a .....

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