Paste side by side multiple files by numerical order
you need rename the files with leading zeroes, like
paste <(ls -1 file* | sort -te -k2.1n) <(seq -f "file%04g" 1000) | xargs -n2 echo mvThe above is for "dry run" - Remove the echo if you satisfied...
or you can use e.g. perl
ls file* | perl -nlE 'm/file(\d+)/; rename $_, sprintf("file%04d", $1);'and after you can
paste file*
With zsh:
setopt extendedglobpaste -d ' ' file<->(n)<x-y> is to match positive decimal integer numbers from x to y. x and/or y can be omitted so <-> is any positive decimal integer number. It could also be written [0-9]## (## being the zsh equivalent of regex +).
The (n) is the globbing qualifiers. The n globbing qualifier turns on numeric sorting which sorts on all sequences of decimal digits appearing in the file names.