i am using fish shell on linux, i would like to write a function applicable to most compression file formats and what i wrote was:
function ex
if test -f $argv[1]
switch (file $argv[1])
case '*.tar.bz2'
tar xjf $argv[1]
case '*.tar.gz' '*.tgz'
tar xvf $argv[1]
case '*.bz2'
bunzip2 $argv[1]
case '*.rar'
unrar x $argv[1]
case '*.gz'
gunzip $argv[1]
case '*.tar'
tar xf $argv[1]
case '*.tbz2'
tar xjf $argv[1]
case '*.zip'
unzip $argv[1]
case '*.Z'
uncompress $argv[1]
case '*.7z'
7z x $argv[1]
end
else
echo "'$argv[1]' is not a valid file"
end
end
however when i apply this to a tar.gz file in fish shell, no error was given, but it was not extracted either. then when i tried to tar xjf the file,, it is extracted.
this has been confusing me for a while.
function ex
if test -f $argv[1]
set ext (echo $argv[1] | sed 's/.*\.\(tar\.bz2\|tar\.gz\|tgz\|bz2\|rar\|gz\|tar\|tbz2\|zip\|Z\|7z\)$/\1/')
if test -n $ext
switch $ext
case 'tar.bz2'
tar xjf $argv[1]
case 'tar.gz' 'tgz'
tar xvf $argv[1]
case 'bz2'
bunzip2 $argv[1]
case 'rar'
unrar x $argv[1]
case 'gz' ! 'tar.gz' 'tgz'
gunzip $argv[1]
case 'tar'
tar xf $argv[1]
case 'tbz2'
tar xjf $argv[1]
case 'zip'
unzip $argv[1]
case 'Z'
uncompress $argv[1]
case '7z'
7z x $argv[1]
case '*'
echo "Unknown file extension: $ext"
end
else
echo "Unrecognized file format: $argv[1]"
end
else
echo "'$argv[1]' is not a valid file"
end
end