Aligning columns using awk
You could re-print the first column, left-justified in a suitably wide field:
$ awk '{$1 = sprintf("%-30s", $1)} 1' file
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If you want to choose a suitable width automatically based on the length of column 1, then:
awk '
NR==FNR {w = length($1) > w ? length($1) : w; next}
{$1 = sprintf("%-*s", w+4, $1)}
1
' file file
Alternatively, the command column -t
can be used to format text in columns.
column -t file
The default column separator is " "
. In the example
lines have multiple spaces but just the first separates columns: we may replace the first by ":" and use it as separator.
$ sed 's/ /:/1' file | column -s ':' -t
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...