commandline session $pstree -A jeffrin at-spi2-registr—{at-spi2-registr} dbus-daemon dbus-daemon dbus-launch dbus-launch dconf-service—2*[{dconf-service}] gconfd-2 gnome-session-+-at-spi-bus-laun-+-dbus-daemon | `-3*[{at-spi-bus-laun}] |-bluetooth-apple—{bluetooth-apple} |-gdu-notificatio |-gnome-fallback—-2*[{gnome-fallback-}] |-gnome-panel-+-chrome-+-chrome | | |-chrome-sandbox—chrome-+-chrome-+-chrome—11*[{c+ | | | | `-3*[chrome—3*[+ | | | `-nacl_helper_boo | | `-31*[{chrome}] | |-gnome-terminal-+-bash—pstree | | |-bash | | |-gnome-pty-helpe | | `-3*[{gnome-terminal}] | `-3*[{gnome-panel}] |-gnome-screensav—2*[{gnome-screensav}] |-gnome-settings–+-sh | `-3*[{gnome-settings-}] |-gnome-sound-app—{gnome-sound-app} |-metacity—3*[{metacity}] |-nm-applet—3*[{nm-applet}] |-notification-da—{notification-da} …
Author Archives: jeffrin
using quotes with GNU Bash
commandline session $echo ‘hello’ hello $echo “hello” hello $echo ‘ls’ ls $echo `ls` $echo `ls -l` total 0 $echo ‘ls -l’ ls -l $
true and false notes
A UNIX Command $true $echo $? 0 $false $echo $? 1 $ $ ./true –version >&- ./true: write error: Bad file number $ ./true –version > /dev/full ./true: write error: No space left on device UNIX Explanation true – do nothing, successfully exit with a status code indicating success. false – do nothing, unsuccessfully exit …
setterm
commandline session $setterm -underline $ls $ls -l total 0 $ls -a . .. $setterm -underline off $ls $ls -l total 0 $ls -a . .. $ http://pluto.infoclub.in/wp-content/uploads/2013/06/setterm.c
dig DNS lookup utility
commandline session $dig ; <> DiG 9.8.4-rpz2+rl005.12-P1 <> ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 44167 ;; flags: qr rd ra; QUERY: 1, ANSWER: 13, AUTHORITY: 0, ADDITIONAL: 0 ;; QUESTION SECTION: ;. IN NS ;; ANSWER SECTION: . 17373 IN NS a.root-servers.net. . 17373 IN NS b.root-servers.net. …
true from coreutils
commandline session $true $echo $? 0 $true hello $echo $? 0 $ http://pluto.infoclub.in/wp-content/uploads/2013/06/true.c
mv command GNU bash
commandline session $> 1 $echo hello > 1 $cat 1 hello $ls 1 $mv 1 2 $ls 2 $cat 2 hello $ http://pluto.infoclub.in/wp-content/uploads/2013/06/mv.c code section while ((c = getopt_long (argc, argv, “bfint:uvS:T”, long_options, NULL)) != -1) { switch (c) { case ‘b’: make_backups = true; if (optarg) version_control_string = optarg; break; case ‘f’: x.interactive = …
cp command GNU bash
commandline session $> 1 $echo hello > 2 $cat 1 $ $cat 2 hello $cp -b 2 cp: missing destination file operand after ‘2’ Try ‘cp –help’ for more information. $cp -b 2 2b $ls 1 2 2b $cat 2b hello $cp -x 2b 2c $ls 1 2 2b 2c $cat 2c hello $cp -x …
Scatter Plot using R
ABOUT SCATTER PLOT A scatter plot (also called a scatterplot, scatter graph, scatter chart, scattergram, or scatter diagram) [3] is a type of plot or mathematical diagram using Cartesian coordinates to display values for typically two variables for a set of data. If the points are color-coded, one additional variable can be displayed. The data …
objdump tinkering
commandline session root>objdump -f nouveau.ko nouveau.ko: file format elf64-x86-64 architecture: i386:x86-64, flags 0x00000011: HAS_RELOC, HAS_SYMS start address 0x0000000000000000 root>objdump -a nouveau.ko nouveau.ko: file format elf64-x86-64 nouveau.ko root>objdump -p nouveau.ko nouveau.ko: file format elf64-x86-64 root>objdump -g nouveau.ko nouveau.ko: file format elf64-x86-64 root> http://www.beautifulwork.org/wp-content/uploads/2013/05/objdump.c