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Put two files side by side line by line

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Adjust the values, the command updates live
user@server
paste -d ';' domains.txt ips.txt

Reads both files in parallel and prints line 1 of the first next to line 1 of the second, and so on. If one file is shorter, the missing fields stay empty. Conversely, paste -sd ',' datei turns all lines of a file into a single comma-separated line.

Note: Lines are matched only by their position. To combine lines by a common key, join is the right tool.

Also searched as

  • merge two files side by side linux
  • combine two lists into columns
  • join lines of a file into one line

Related one-liners

All in Text processing

Calculate the average, minimum and maximum of a column

$awk -v c=2 'NR == 1 {min = max = $c} {s += $c; if ($c < min) min = $c; if ($c > max) max = $c} END {if (NR) printf "n=%d avg=%.2f min=%s max=%s\n", NR, s/NR, min, max}' measurements.txt
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Extract specific fields with cut

$cut -d':' -f1,7 /etc/passwd
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Join two files on a common field

$join -t ';' <(sort -t ';' -k1,1 domains-customers.csv) <(sort -t ';' -k1,1 domains-expiry.csv)
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Print lines where a column value exceeds a threshold

$awk -v c=10 -v min=5000000 '$c + 0 > min + 0' /var/www/vhosts/system/example.com/logs/access_ssl_log
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Sum the numbers in a column with awk

$awk -v c=10 '{s += $c} END {print s}' /var/www/vhosts/system/example.com/logs/access_ssl_log
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Align output as a table with column

$column -t -s ':' /etc/passwd
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