Enclosing characters in single quotes preserves the literal value of each character within the quotes.
pstree – display a tree of processes
ABOUT pstree
pstree shows running processes as a tree. The tree is rooted at either pid or init if pid is omitted. If a user name is specified, all process trees rooted at processes owned by that user are shown.
[bash]
$pstree -A
init-+-NetworkManager—3*[{NetworkManager}]
|-accounts-daemon—2*[{accounts-daemon}]
|-acpid
|-at-spi-bus-laun-+-dbus-daemon
| `-3*[{at-spi-bus-laun}]
|-at-spi2-registr—{at-spi2-registr}
|-atd
|-avahi-daemon—avahi-daemon
|-bluetoothd
|-colord—2*[{colord}]
|-console-kit-dae—64*[{console-kit-dae}]
|-cron
|-2*[dbus-daemon]
|-dbus-launch
|-dconf-service—2*[{dconf-service}]
|-dhclient
|-evolution-addre—4*[{evolution-addre}]
|-evolution-calen—4*[{evolution-calen}]
|-evolution-sourc—2*[{evolution-sourc}]
|-exim4
|-gconfd-2
|-gdm3-+-gdm-simple-slav-+-Xorg—{Xorg}
| | |-gdm-session-wor-+-gnome-session-+-applet.py—{applet.py}
| | | | |-evolution-alarm—4*[{evolution-alarm}]
| | | | |-gnome-settings—-3*[{gnome-settings-}]
| | | | |-gnome-shell-+-chrome-+-chrome
| | | | | | |-chrome-sandbox—chro+
| | | | | | `-39*[{chrome}]
| | | | | `-6*[{gnome-shell}]
| | | | |-ssh-agent
| | | | |-tracker-store—7*[{tracker-store}]
| | | | `-3*[{gnome-session}]
| | | `-2*[{gdm-session-wor}]
| | `-2*[{gdm-simple-slav}]
| `-2*[{gdm3}]
|-6*[getty]
|-gnome-keyring-d—7*[{gnome-keyring-d}]
|-gnome-shell-cal—4*[{gnome-shell-cal}]
|-gnome-terminal–+-bash—emacs
| |-bash—pstree
| |-gnome-pty-helpe
| `-3*[{gnome-terminal-}]
|-goa-daemon—3*[{goa-daemon}]
|-gpm
|-gsd-printer—{gsd-printer}
|-gvfs-afc-volume—2*[{gvfs-afc-volume}]
|-gvfs-goa-volume—{gvfs-goa-volume}
|-gvfs-gphoto2-vo—{gvfs-gphoto2-vo}
|-gvfs-mtp-volume—{gvfs-mtp-volume}
|-gvfs-udisks2-vo—2*[{gvfs-udisks2-vo}]
|-gvfsd—{gvfsd}
|-gvfsd-burn—2*[{gvfsd-burn}]
|-mission-control—2*[{mission-control}]
|-modem-manager
|-ntpd
|-polkitd—2*[{polkitd}]
|-pulseaudio—2*[{pulseaudio}]
|-rsyslogd—3*[{rsyslogd}]
|-rtkit-daemon—2*[{rtkit-daemon}]
|-sshd
|-systemd-logind
|-udevd
|-udisksd—4*[{udisksd}]
|-upowerd—2*[{upowerd}]
`-wpa_supplicant
$
[/bash]
UNIX Explanation pstree shows running processes as a tree. The tree is rooted at either pid or init if pid is omitted. If a user name is specified, all process trees rooted at processes owned by that user are shown.
RELATED SOURCE CODE EXPOSITION
[c]
static void free_buffers()
{
if (width != NULL) {
free(width);
width = NULL;
}
if (more != NULL) {
free(more);
more = NULL;
}
capacity = 0;
}
[/c]
SOURCE CODE HIGHLIGHT
Frees any buffers allocated by ensure_buffer_capacity.
RELATED KNOWLEDGE
The fundamental data structure within the kernel controlling all processes is the process structure, which grows and shrinks dynamically as processes are forked and finished or killed.
LINKS
https://www.howtoforge.com/linux-pstree-command/
http://man7.org/linux/man-pages/man1/pstree.1.html
pstree – process status tree
Linux Command
systemd-+-ModemManager---3*[{ModemManager}]
|-NetworkManager---3*[{NetworkManager}]
|-accounts-daemon---3*[{accounts-daemon}]
|-avahi-daemon---avahi-daemon
|-bluetoothd
|-colord---3*[{colord}]
|-cron
|-cups-browsed---3*[{cups-browsed}]
|-cupsd
|-dbus-daemon
|-exim4
|-fwupd---5*[{fwupd}]
|-gdm3-+-gdm-session-wor-+-gdm-x-session-+-Xorg---13*[{Xorg}]
| | | |-gnome-session-b-+-ssh-agent
| | | | `-4*[{gnome-session-b}]
| | | `-3*[{gdm-x-session}]
| | `-3*[{gdm-session-wor}]
| `-3*[{gdm3}]
|-geoclue---3*[{geoclue}]
|-gpm
|-nm-dispatcher---4*[{nm-dispatcher}]
|-polkitd---3*[{polkitd}]
|-power-profiles----3*[{power-profiles-}]
|-rsyslogd---3*[{rsyslogd}]
|-rtkit-daemon---2*[{rtkit-daemon}]
|-sshd
|-switcheroo-cont---3*[{switcheroo-cont}]
|-systemd-+-(sd-pam)
| |-at-spi-bus-laun-+-dbus-daemon
| | `-4*[{at-spi-bus-laun}]
| |-at-spi2-registr---3*[{at-spi2-registr}]
| |-dbus-daemon
| |-dconf-service---3*[{dconf-service}]
| |-evolution-addre---6*[{evolution-addre}]
| |-evolution-calen---9*[{evolution-calen}]
| |-evolution-sourc---4*[{evolution-sourc}]
| |-gcr-ssh-agent---2*[{gcr-ssh-agent}]
| |-2*[gjs---11*[{gjs}]]
| |-gnome-keyring-d---4*[{gnome-keyring-d}]
| |-gnome-session-b-+-evolution-alarm---7*[{evolution-alarm}]
| | |-gnome-software---16*[{gnome-software}]
| | |-gsd-disk-utilit---3*[{gsd-disk-utilit}]
| | `-4*[{gnome-session-b}]
| |-gnome-session-c---{gnome-session-c}
| |-gnome-shell-+-firefox-+-Isolated Servic---20*[{Isolated Servic}]
| | | |-Isolated Web Co---23*[{Isolated Web Co}]
| | | |-3*[Isolated Web Co---17*[{Isolated Web Co}]]
| | | |-3*[Isolated Web Co---18*[{Isolated Web Co}]]
| | | |-Privileged Cont---18*[{Privileged Cont}]
| | | |-RDD Process---3*[{RDD Process}]
| | | |-Socket Process---4*[{Socket Process}]
| | | |-Utility Process---3*[{Utility Process}]
| | | |-3*[Web Content---10*[{Web Content}]]
| | | |-WebExtensions---17*[{WebExtensions}]
| | | `-182*[{firefox}]
| | |-mutter-x11-fram---14*[{mutter-x11-fram}]
| | `-35*[{gnome-shell}]
| |-gnome-shell-cal---6*[{gnome-shell-cal}]
| |-gnome-terminal--+-bash---git-+-git---git-remote-http
| | | |-git
| | | `-{git}
| | |-bash---pstree
| | `-5*[{gnome-terminal-}]
| |-goa-daemon---4*[{goa-daemon}]
| |-goa-identity-se---3*[{goa-identity-se}]
| |-gsd-a11y-settin---4*[{gsd-a11y-settin}]
| |-gsd-color---4*[{gsd-color}]
| |-gsd-datetime---4*[{gsd-datetime}]
| |-gsd-housekeepin---4*[{gsd-housekeepin}]
| |-gsd-keyboard---4*[{gsd-keyboard}]
| |-gsd-media-keys---5*[{gsd-media-keys}]
| |-gsd-power---5*[{gsd-power}]
| |-gsd-print-notif---3*[{gsd-print-notif}]
| |-gsd-printer---3*[{gsd-printer}]
| |-gsd-rfkill---3*[{gsd-rfkill}]
| |-gsd-screensaver---3*[{gsd-screensaver}]
| |-gsd-sharing---4*[{gsd-sharing}]
| |-gsd-smartcard---4*[{gsd-smartcard}]
| |-gsd-sound---4*[{gsd-sound}]
| |-gsd-usb-protect---4*[{gsd-usb-protect}]
| |-gsd-wacom---3*[{gsd-wacom}]
| |-gsd-xsettings---4*[{gsd-xsettings}]
| |-gvfs-afc-volume---4*[{gvfs-afc-volume}]
| |-gvfs-goa-volume---3*[{gvfs-goa-volume}]
| |-gvfs-gphoto2-vo---3*[{gvfs-gphoto2-vo}]
| |-gvfs-mtp-volume---3*[{gvfs-mtp-volume}]
| |-gvfs-udisks2-vo---4*[{gvfs-udisks2-vo}]
| |-gvfsd-+-gvfsd-dnssd---3*[{gvfsd-dnssd}]
| | |-gvfsd-network---4*[{gvfsd-network}]
| | |-gvfsd-trash---4*[{gvfsd-trash}]
| | `-3*[{gvfsd}]
| |-gvfsd-fuse---6*[{gvfsd-fuse}]
| |-gvfsd-metadata---3*[{gvfsd-metadata}]
| |-ibus-daemon-+-ibus-dconf---4*[{ibus-dconf}]
| | |-ibus-engine-sim---3*[{ibus-engine-sim}]
| | |-ibus-extension----4*[{ibus-extension-}]
| | `-3*[{ibus-daemon}]
| |-ibus-portal---3*[{ibus-portal}]
| |-ibus-x11---3*[{ibus-x11}]
| |-jackdbus
| |-2*[pipewire---2*[{pipewire}]]
| |-pipewire-pulse---2*[{pipewire-pulse}]
| |-sd_dummy---2*[{sd_dummy}]
| |-sd_espeak-ng---{sd_espeak-ng}
| |-speech-dispatch---4*[{speech-dispatch}]
| |-tracker-miner-f---7*[{tracker-miner-f}]
| |-wireplumber---5*[{wireplumber}]
| |-xdg-desktop-por---6*[{xdg-desktop-por}]
| |-xdg-desktop-por---14*[{xdg-desktop-por}]
| |-xdg-desktop-por---4*[{xdg-desktop-por}]
| |-xdg-document-po-+-fusermount3
| | `-6*[{xdg-document-po}]
| `-xdg-permission----3*[{xdg-permission-}]
|-systemd-hostnam
|-systemd-journal
|-systemd-logind
|-systemd-timesyn---{systemd-timesyn}
|-systemd-udevd
|-udisksd---5*[{udisksd}]
|-unattended-upgr---{unattended-upgr}
|-upowerd---3*[{upowerd}]
`-wpa_supplicant
Explanation
pstree shows running processes as a tree. The tree is rooted at either pid or init if pid is omitted. If a user name is specified, all process trees rooted at processes owned by that user are shown.
Related Source Code Exposition
static void free_buffers()
{
if (width != NULL) {
free(width);
width = NULL;
}
if (more != NULL) {
free(more);
more = NULL;
}
capacity = 0;
}
static void free_buffers()
{
if (width != NULL) {
free(width);
width = NULL;
}
if (more != NULL) {
free(more);
more = NULL;
}
capacity = 0;
}
Source Code Highlight
Frees any buffers allocated by ensure_buffer_capacity.
Featured Image
Related Knowledge
The fundamental data structure within the kernel controlling all processes is the process structure, which grows and shrinks dynamically as processes are forked and finished or killed.
GOOD NEWS
Good News
It is in living and acting that man establishes his relationship with being, with the truth and with the good. The artist has a special relationship to beauty. In a very true sense it can be said that beauty is the vocation bestowed on him by the Creator in the gift of “artistic talent”. And, certainly, this too is a talent which ought to be made to ] bear fruit, in keeping with the sense of the Gospel parable of the talents (cf. Mt 25:14-30) . Here we touch on an essential point. Those who perceive in themselves this kind of divine spark which is the artistic vocation—as poet, writer, sculptor, architect, musician, actor and so on—feel at the same time the obligation not to waste this talent but to develop it, in order to put it at the service of their neighbour and of humanity as a whole . John Paul II Letter to Artists, (April 4, 1999) The artistic vocation in the service of beauty
IDEA
Vision . [ sirach 11:20 ] from New American Bible My son, hold fast to your duty, busy yourself with it, grow old while doing your task. Our part : By doing the above we will be free from worries. Mission. directing passion to path of knowledge and self realization. Objective(s). Acquire In Depth Knowledge of software operating systems and functions with the help of systems administration. Acquire In Depth Knowledge of how Internet Works using Web Development. strive to transform systems administration into a science.