awk
solution that deals with stdin
Since column
is not POSIX, maybe this is:
mycolumn() (
file="${1:--}"
if [ "$file" = - ]; then
file="$(mktemp)"
cat > "${file}"
fi
awk '
FNR == 1 { if (NR == FNR) next }
NR == FNR {
for (i = 1; i <= NF; i++) {
l = length($i)
if (w[i] < l)
w[i] = l
}
next
}
{
for (i = 1; i <= NF; i++)
printf "%*s", w[i] + (i > 1 ? 1 : 0), $i
print ""
}
' "$file" "$file"
if [ "$1" = - ]; then
rm "$file"
fi
)
Test:
printf '12 1234 1
12345678 1 123
1234 123456 123456
' > file
Test commands:
mycolumn file
mycolumn <file
mycolumn - <file
Output for all:
12 1234 1
12345678 1 123
1234 123456 123456
See also: