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lesspipe.sh
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#!/bin/sh # # To use this filter with less, define LESSOPEN: # export LESSOPEN="|/usr/bin/lesspipe.sh %s" # # The script should return zero if the output was valid and non-zero # otherwise, so less could detect even a valid empty output # (for example while uncompressing gzipped empty file). # For backward-compatibility, this is not required by default. To turn # this functionality there should be another vertical bar (|) straight # after the first one in the LESSOPEN environment variable: # export LESSOPEN="||/usr/bin/lesspipe.sh %s" if [ ! -e "$1" ] ; then exit 1 fi if [ -d "$1" ] ; then ls -alF -- "$1" exit $? fi exec 2>/dev/null # Allow for user defined filters if [ -x ~/.lessfilter ]; then ~/.lessfilter "$1" if [ $? -eq 0 ]; then exit 0 fi fi case "$1" in *.[1-9n].bz2|*.[1-9]x.bz2|*.man.bz2|*.[1-9n].[gx]z|*.[1-9]x.[gx]z|*.man.[gx]z|*.[1-9n].lzma|*.[1-9]x.lzma|*.man.lzma) case "$1" in *.gz) DECOMPRESSOR="gzip -dc" ;; *.bz2) DECOMPRESSOR="bzip2 -dc" ;; *.xz|*.lzma) DECOMPRESSOR="xz -dc" ;; esac if [ -n "$DECOMPRESSOR" ] && $DECOMPRESSOR -- "$1" | file - | grep -q troff; then $DECOMPRESSOR -- "$1" | groff -Tascii -mandoc - exit $? fi ;;& *.[1-9n]|*.[1-9]x|*.man) if file "$1" | grep -q troff; then man -l "$1" | cat -s exit $? fi ;;& *.tar) tar tvvf "$1" ;; *.tgz|*.tar.gz|*.tar.[zZ]) tar tzvvf "$1" ;; *.tar.xz) tar Jtvvf "$1" ;; *.xz|*.lzma) xz -dc -- "$1" ;; *.tar.bz2|*.tbz2) bzip2 -dc -- "$1" | tar tvvf - ;; *.[zZ]|*.gz) gzip -dc -- "$1" ;; *.bz2) bzip2 -dc -- "$1" ;; *.zip|*.jar|*.nbm) zipinfo -- "$1" ;; *.rpm) rpm -qpivl --changelog -- "$1" ;; *.cpi|*.cpio) cpio -itv < "$1" ;; *.gpg) gpg -d "$1" ;; *.gif|*.jpeg|*.jpg|*.pcd|*.png|*.tga|*.tiff|*.tif) if [ -x /usr/bin/identify ]; then identify "$1" elif [ -x /usr/bin/gm ]; then gm identify "$1" else echo "No identify available" echo "Install ImageMagick or GraphicsMagick to browse images" exit 1 fi ;; *) if [ -x /usr/bin/file ] && [ -x /usr/bin/iconv ] && [ -x /usr/bin/cut ]; then case `file -b "$1"` in *UTF-16*) conv='UTF-16' ;; *UTF-32*) conv='UTF-32' ;; esac if [ -n "$conv" ]; then env=`echo $LANG | cut -d. -f2` if [ -n "$env" -a "$conv" != "$env" ]; then iconv -f $conv -t $env "$1" exit $? fi fi fi exit 1 esac exit $?