Linux command to print directory structure in the form of a tree

Is this what you're looking for tree? It should be in most distributions (maybe as an optional install).

~> tree -d /proc/self//proc/self/|-- attr|-- cwd -> /proc|-- fd|   `-- 3 -> /proc/15589/fd|-- fdinfo|-- net|   |-- dev_snmp6|   |-- netfilter|   |-- rpc|   |   |-- auth.rpcsec.context|   |   |-- auth.rpcsec.init|   |   |-- auth.unix.gid|   |   |-- auth.unix.ip|   |   |-- nfs4.idtoname|   |   |-- nfs4.nametoid|   |   |-- nfsd.export|   |   `-- nfsd.fh|   `-- stat|-- root -> /`-- task    `-- 15589        |-- attr        |-- cwd -> /proc        |-- fd        | `-- 3 -> /proc/15589/task/15589/fd        |-- fdinfo        `-- root -> /27 directories

sample taken from maintainer's web page.

You can add the option -L # where # is replaced by a number, to specify the max recursion depth.

Remove -d to display also files.

You can use this one:

ls -R | grep ":$" | sed -e 's/:$//' -e 's/[^-][^\/]*\//--/g' -e 's/^/   /' -e 's/-/|/'

It will show a graphical representation of the current sub-directories without files in a few seconds, e.g. in /var/cache/:

   .   |-apache2   |---mod_cache_disk   |-apparmor   |-apt   |---archives   |-----partial   |-apt-xapian-index   |---index.1   |-dbconfig-common   |---backups   |-debconf

Source

This command works to display both folders and files.

find . | sed -e "s/[^-][^\/]*\// |/g" -e "s/|\([^ ]\)/|-\1/"

Example output:

. |-trace.pcap |-parent | |-chdir1 | | |-file1.txt | |-chdir2 | | |-file2.txt | | |-file3.sh |-tmp | |-json-c-0.11-4.el7_0.x86_64.rpm

Source: Comment from @javasheriff here. Its submerged as a comment and posting it as answer helps users spot it easily.