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Read a gzipped text file directly with less.

Terminal - Read a gzipped text file directly with less.
less textfile.gz
2009-03-15 23:51:17
User: allbad
Functions: less
-5
Read a gzipped text file directly with less.

There is no need to 'zcat textfile.gz | less' with newer distros. This is useful for reading archived log files without having to extract, read, and zip when done.

Alternatives

There are 5 alternatives - vote for the best!

Terminal - Alternatives

Know a better way?

If you can do better, submit your command here.

What others think

Again, 'less' can't do this. Read the man page.

zcat textfile.gz | less
Comment by atoponce 403 weeks and 1 day ago

it's working, but it's more handy for me:

zcat file.gz |grep stuff |more
Comment by gladia2r 403 weeks and 1 day ago

and again. Yes, less can do this.

Comment by elzapp 403 weeks and 1 day ago

atoponce is right. Read the man page.

The less version 418 manpage has no hits for 'gzip' or 'gz' strings when I just searched it. So I don't think less *the program* supports this. However, it's possibly that your system is setup in such a way that you *think* less does.

In some distributions, I believe less actually invokes 'zless', which is a bash script (/bin/zless) on my ubuntu system. I remember when I used to run gentoo that, I think, the less->zless link was present. If your file was gzip compressed, then it displayed properly, yay, but if not, it displayed OK too.

The other way less may support gzip-compressed files is hinted at in the manpage for zless, and documented in the less manpage, under the "INPUT PREPROCESSOR" section. That method is to set some environment variables for less, such that it uses other tools to first filter (uncompress, here) the file before displaying it.

So I normally try:

zless textfile.gz

Back in 2004, their was a wapper script for less and more posted on a debian mailing list which would uncompress files: http://lists.debian.org/debian-devel/2004/02/msg01128.html So some day when you invoke less, the "right thing" will happen and the terminal will display your file for you - but it's not due to less, it's due to a wrapper script or (more crude) symlink.

Comment by bwoodacre 403 weeks ago

Less cannot do this, however many systems have wrapped less up so that if given a .gz file it will uncompress it and pipe it through

zless is an explicit filter that does this, and will work for gzipped files that do not end in .gz

Comment by ant 403 weeks ago

zless is nothing more than a bash script hack. It invokes gzip, pipes it to STDOUT, and uses less to parse the output. As such, surprise, surprise, less doesn't read binaries, including gzip files. People need to spend time reading the docs, and learning their system.

Comment by atoponce 402 weeks and 6 days ago

Ubuntu and Fedora both set environment vars:

Ubuntu:

set | grep -i less

LESSCLOSE='/usr/bin/lesspipe %s %s'

LESSOPEN='| /usr/bin/lesspipe %s'

Fedora:

set | grep -i less

LESSOPEN='|/usr/bin/lesspipe.sh %s'

lesspipe.sh is a shell script that handles adapting the input to work with less.

Comment by bitmage 402 weeks and 5 days ago

@bitmage you are called bitMAGE for a reason! I didn't know this either, nor did I believe it.

But I was convinced once I hacked in the following one-liner into /usr/bin/lesspipe:

echo "calling $0" && sleep 2

Guess what, the echo line came up, so this stuff *IS* routed via lesspipe. Well spotted. I hope that this myth has ended once and for all that "new less version can even 'load gzipped files'". (Unlike tar, where you can INDEED use tar xvf to unpack (pk)zipped files (only legit way in older versions was: tar zxvf)

Comment by syntaxerror74 104 weeks and 5 days ago

2016-6-7 leilei

"Tweed is an excellent fabric especially when you are living in place like London. London is known for its cold weather and in such climate, tweed works absolutely fine. One of the biggest advantages of buying a tweed suit is that you it can be worn all together or can be incorporated separately into pieces in your wardrobe. Tweed suits in London is quite famous amongst men. So let us understand, what exactly tweed fabric is.

What is Tweed?

Tweed is a warm rough to touch fabric and was originated in Scotland. The reason why tweed suits in London are famous is because of its loose weave which makes it flexible and comfortable during winters. The tweed fabric is referred to the weave of fabric; therefore when you see different kinds of tweed, it would tell you the pattern it has been woven. One of the most popular kinds of tweed is the herringbone tweed which a diagonally v-shaped black and white weave. The herringbone tweed gives a rich visual texture and known for its versatility.

Ways to wear Tweed in winters

Everybody needs to wear warm clothes during the winter month to protect from the chilly weather outside. However, many people think that they might have to compromise fashion during those chilly months. Not now! There are many fabrics that you can use to protect yourself from the weather as well as still enjoy great looks. Tweed is one of the fabrics that can make you awesome even in winters as well. Below are some ways of how you can incorporate tweed with other pieces in your wardrobe

"

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"Casually ? if you are a starter with tweed then it is recommended to start with plain variety of tweed. You can wear a tweed jacket with dark blue jeans and high boots. Incorporate a neutral t-shirt or a winter shirt under the jacket.

At work ? Tweed suit in London are quite popular as one of the formal attires. Heavy woven tweeds can make you look older, so try buying tweed suits in London that are finely weaved and pair it with your regular shirts like white or blue with smart formal shoes. Believe it or not, it can win you praise at work.

Accessorise ? Apart from wearing tweed suits in London as attire you can even use accessories made out of tweed. Tweed caps, laptop bags, scarves, gloves are a smart way to incorporate tweed in your winter collection. It is also a safe way of using tweed fabric if you are not too comfortable wearing it. There is even footwear that has tweed as their centre fabric and looks awesome.

Taking care of Tweed

Though the fabric boasts itself about being tough and rugged, it still requires a good care to use it for coming years as well. Due to its weave structure it often pick up dirt and stains that can get hard to remove. Make sure you take your tweed clothes for dry cleaning as washing them in washing machines can make them shrink. Also, keep them in cool dry place so that they do not get attracted by moths.

"

Comment by leilei3915 26 weeks ago

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