Right-align text in console using pipe like ( command | right )

$ right(){ l="$(cat -)"; s=$(echo -e "$l"| wc -L); echo "$l" | while read l;do j=$(((s-${#l})));echo "$(while ((j-->0)); do printf " ";done;)$l";done;}; ls --color=none / | right

1
2011-02-14 16:58:37

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What Others Think

Nice, but POSIX wc doesn't have -L. You can use awk instead; just replace the wc -L with awk ' { if ( length > L ) { L=length} }END{ print L}' and you're there. Doing this takes the function beyond 255 chars, which may be a problem (so don't one-line it).
dfaulkner · 383 weeks and 4 days ago
Also worth noting that these don't right-justify the text (within your terminal window confines). They just right align any lines coming out. So a single line is still flush-left, and the longest line still begins at column zero.
dfaulkner · 383 weeks and 4 days ago
Yep... If you want to define the linesize you can do samething like it: right(){ l="$(cat -)"; [ -n "$1" ] && s=$1 || s=$(echo -e "$l"| wc -L); echo "$l" | while read l;do j=$(((s-${#l})));echo "$(while ((j-->0)); do printf " ";done;)$l";done;}; ls --color=none / | right 150 with this u can pass the linesize as parametter or remove the parametter and use the max-line-size of input
glaudiston · 383 weeks and 4 days ago
Seems overly complicated. right(){ while read;do printf "%${1:-${COLUMNS:-80}}s\n" "$REPLY";done };ls / | right
eightmillion · 383 weeks and 4 days ago
@eightmillion, this way is simple, but you lost the alignment by text, you will have only the column alignment. and "tput cols" works for me, ${COLUMNS} is not set. then I think right(){ while read;do printf "%${1:-$(tput cols)}s\n" "$REPLY";done };ls / --color=none | right more efetive in you example. tnks for your way.
glaudiston · 383 weeks and 3 days ago

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