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From Linuxintro

  • Big endian
    tstaerk@little:~> dd if=test bs=1 count=1 | hexdump 1+0 records in
    1 KB (190 words) - 11:42, 12 December 2010
  • Seq
    ...a [[command]] to show a sequence of numbers. For example the sequence from 1 to 5 can be shown like this: # seq 1 5
    729 bytes (127 words) - 15:30, 30 June 2014
  • Use a headset with Linux
    [87093.320546] usb 1-3: new full-speed USB device number 7 using xhci_hcd [87093.476365] usb 1-3: New USB device found, idVendor=1395, idProduct=002d, bcdDevice=34.49
    1 KB (151 words) - 14:00, 13 January 2021
  • Split
    -rw-r--r-- 1 username users 5047163622 2012-07-05 05:07 hugefile.tar.gz -rw-r--r-- 1 username users 2000000000 2012-07-05 06:18 xaa
    510 bytes (67 words) - 05:09, 19 April 2014
  • Set up a heartbeat cluster
    {| class="wikitable sortable" border=1 | first cluster node || heartbeat-1 || 192.168.0.21 || virtual
    3 KB (362 words) - 14:23, 8 May 2009
  • Vmstat
    ...0 304 2211340 534660 453608 0 0 2 1 1 0 2 0 97 1 0
    2 KB (181 words) - 09:58, 20 April 2014
  • Watch
    As an example, to watch the size of a file ''test'' in 1 second intervals: watch --interval=1 "[[du]] -h ''test''"
    377 bytes (61 words) - 08:37, 23 April 2014
  • Nmap
    Warning: Hostname localhost resolves to 2 IPs. Using 127.0.0.1. Interesting ports on localhost (127.0.0.1):
    718 bytes (99 words) - 09:52, 20 April 2014
  • Networking
    ...br> <abbr title="the peer you want to test communication with">192.168.178.1</abbr> tc qdisc add dev eth0 root handle 1: cbq avpkt 1000 bandwidth 10mbit
    2 KB (247 words) - 10:49, 1 January 2021
  • Install linux on a USB disk
    {| class="wikitable sortable" border=1 ...nstall Linux on a USB disk with Unetbootin]] || Linux or Windows || any || 1 hour, depends on your choices
    787 bytes (123 words) - 14:25, 1 November 2013
  • Vi
    :1,%s/old text/new text/g 1 -> first line
    433 bytes (76 words) - 08:36, 19 February 2010
  • Install RealPlayer
    libXv.so.1 is needed by realplay-11.0.2.1744-1.i386 1:realplay ########################################### [100%]
    1 KB (129 words) - 09:07, 12 September 2010
  • Find
    To find files in ''folder'' that have been changed more than ''1'' day ago use find ''folder'' -ctime +1
    1 KB (212 words) - 10:06, 27 November 2021
  • Fstab
    ...176:48a5ce2c-part1 / ext3 acl,user_xattr 1 1
    836 bytes (72 words) - 16:13, 26 March 2014
  • Echo
    for l in $(seq 0 1 7); do for i in $(seq 0 1 7); do for n in $(seq 0 1 7); do \
    885 bytes (135 words) - 21:02, 6 January 2013
  • Ksar
    * collect all system data, in this example for ''20'' intervals lasting ''1'' second each, using the data file ''/tmp/sar.out'': [[sar]] -o ''/tmp/sar.out'' ''1'' ''20''
    665 bytes (115 words) - 08:17, 23 January 2011
  • Testing IMAP via telnet
    Trying 127.0.0.1... 1 LOGIN testuser password
    3 KB (358 words) - 19:59, 30 December 2020
  • File (command)
    /dev/sda1: block special (8/1) ''/dev/sdc'': Linux rev 1.0 ext3 filesystem data (needs journal recovery) (large files)
    660 bytes (97 words) - 18:46, 15 January 2012
  • Find out your distribution
    == Step 1 == As an example, here is the output of SUSE Linux 11.1:
    1 KB (220 words) - 19:05, 24 November 2015
  • Text editors
    {| class="wikitable sortable" border=1
    276 bytes (36 words) - 10:44, 28 December 2012
  • Crontab
    Run the command fetchmail every day at 10 minutes past 1: 10 1 * * * fetchmail
    735 bytes (110 words) - 08:44, 24 April 2014
  • Gnuplot
    vmstat 1 10 | grep -v r > vmstat.txt gnuplot -p -e "plot 'weight' using 1:2 with linespoints"
    2 KB (337 words) - 20:07, 2 August 2023
  • Valgrind
    ==21506== Using Valgrind-3.6.1 and LibVEX; rerun with -h for copyright info ==21506== in use at exit: 4 bytes in 1 blocks
    1 KB (150 words) - 10:44, 19 May 2012
  • Postgrey
    ./postgrey --inet 127.0.0.1:60000 Interesting ports on lvps87-230-12-146.dedicated.hosteurope.de (127.0.0.1):
    2 KB (247 words) - 12:28, 31 March 2012
  • Bash operator
    duffman:~ # ifconfig eth1 | sed -rn 's/^.*inet addr:([^ ]+).*$/\1/p' duffman:~ # ip=$(ifconfig eth1 | sed -rn 's/^.*inet addr:([^ ]+).*$/\1/p' )
    4 KB (672 words) - 14:06, 12 January 2014
  • UpTime
    10:04:56 up 2 days, 21:06, 1 user, load average: 0.09, 0.06, 0.12
    165 bytes (22 words) - 08:06, 19 September 2013
  • Top
    top - 11:21:16 up 1 day, 2:04, 9 users, load average: 0.99, 0.71, 0.43 Tasks: 269 total, 1 running, 268 sleeping, 0 stopped, 0 zombie
    2 KB (273 words) - 10:18, 20 April 2014
  • Paging vs. swapping
    ...80 41508 192112 2163916 '''0 0''' 10 18 1 4 2 0 97 1 ...80 41700 192112 2163960 '''0 0''' 0 129 616 1108 1 0 98 1
    2 KB (261 words) - 08:49, 4 December 2009
  • Static linking
    -rw-r--r-- 1 root root 87 Dec 31 11:32 help.cpp -rw-r--r-- 1 root root 105 Dec 31 11:57 main.cpp
    3 KB (446 words) - 05:34, 19 April 2014
  • Packages
    {| class="wikitable sortable" border=1
    275 bytes (27 words) - 13:31, 11 December 2011
  • Bg, fg and jobs
    [1]+ Stopped xclock [1]+ Stopped xclock
    1 KB (229 words) - 08:13, 22 April 2014
  • NTFS
    total 1 -rwxrwxrwx 1 root root 6 Dec 8 12:37 ''welt''
    978 bytes (164 words) - 06:06, 2 January 2021
  • Dig
    ;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 0 ;; SERVER: 192.168.0.1#53(192.168.0.1)
    4 KB (512 words) - 11:13, 14 June 2019
  • Create a partition
    Units = sectors of 1 * 512 = 512 bytes Units = sectors of 1 * 512 = 512 bytes
    2 KB (284 words) - 10:27, 5 August 2012
  • Control a computer over the network
    {| class="wikitable sortable" border=1 ...p> || issue commands to a remote computer via a browser || yes || yes<sup>1</sup> || no
    2 KB (283 words) - 14:48, 1 June 2016
  • Php
    default_charset from UTF8 to 8859-1.
    328 bytes (53 words) - 18:38, 22 July 2011
  • Package
    Let's have a look at a small rpm package file, distcc-server-3.1-1.i386.rpm. It is available from the internet and installs a distributed C co * 3.1-1: 3.1 is the version, -1 means this is the first version of the packager.
    1,020 bytes (164 words) - 09:36, 18 April 2009
  • Swap
    1048576000 bytes (1.0 GB) copied, 4.35241 s, 241 MB/s Setting up swapspace version 1, size = 1023996 KiB
    993 bytes (149 words) - 11:35, 10 June 2012
  • Cp -pr
    brw-r----- 1 root disk 8, 0 Dec 20 08:39 sda
    234 bytes (35 words) - 06:06, 2 January 2021
  • Wc
    ls -1 | wc -l
    216 bytes (38 words) - 07:56, 23 May 2015
  • Stdout, stderr and stdin
    Every process on Linux has 3 streams: input (0), standard output (1) and error output (2). Each one can be redirected. Stdin reads "by default" # ls 1>/tmp/file1
    3 KB (477 words) - 14:23, 27 January 2014
  • Sqlite
    1 temp /var/tmp/sqlite_fWDjMUYco0dIRgS
    523 bytes (48 words) - 12:41, 7 September 2013
  • Wlan
    Channel:1 Frequency:2.412 GHz (Channel 1)
    3 KB (367 words) - 19:11, 24 November 2015
  • Forkpty failed
    [pid 154] chown("/dev/pts/1", 65534, 5) = -1 EPERM (Operation not permitted)
    1 KB (115 words) - 17:58, 5 April 2015
  • Sound troubleshooting
    lrwxrwxrwx 1 root root 9 Jun 21 10:38 /dev/dsp -> /dev/dsp2 crw-rw---- 1 root audio 14, 19 Jun 21 10:36 /dev/dsp1
    4 KB (589 words) - 03:55, 1 April 2020
  • Mdadm
    ...wo USB hard drives that you just bought and that you want to use in a RAID 1 configuration. ...ou need to tell the computer how the disks belong together (RAID 0 or RAID 1 for example). That is what the assemble command is for.
    1 KB (169 words) - 09:42, 22 April 2014
  • Set up an Oracle Cluster File System
    64 bytes from node2 (192.168.0.12): icmp_seq=1 ttl=64 time=1.09 ms 64 bytes from node1 (192.168.0.11): icmp_seq=1 ttl=64 time=1.09 ms
    3 KB (495 words) - 07:20, 15 December 2014
  • Unicode
    This means, every "normal" character has been stored in 1 byte, every umlaut in 2 bytes. That is unicode's [http://en.wikipedia.org/w convmv -f iso-8859-1 -t utf8 -r --notest <datei>
    1 KB (196 words) - 20:00, 1 January 2012
  • Disown
    bash: warning: deleting stopped job 1 with process group 18228
    324 bytes (36 words) - 14:03, 12 January 2014
  • Allow searching for short terms in mediawiki
    ft_min_word_len=1
    436 bytes (75 words) - 04:34, 30 April 2009
  • Diskspace
    {| class="wikitable sortable" border=1
    406 bytes (56 words) - 13:58, 9 November 2013
  • Sleep
    waits for ''1 minute''.
    329 bytes (56 words) - 08:31, 21 April 2014
  • Qemu
    mtools_skip_check=1 drive c: file="/home/user/qemu/harddisk.img" partition=1
    1 KB (159 words) - 09:07, 17 February 2010
  • YaST2 Control Center is not running as root
    lrwxrwxrwx 1 root root 5 May 29 06:33 /sbin/yast -> yast2 -rwxr-xr-x 1 root root 10273 May 2 12:42 /sbin/yast2
    2 KB (265 words) - 10:24, 29 June 2014
  • Add mod rewrite to apache
    lrwxrwxrwx 1 root root 27 Oct 3 13:47 mods-enabled/rewrite.load -> mods-available/rewri lrwxrwxrwx 1 root root 40 Oct 3 13:48 mods-enabled/rewrite.load -> /etc/apache2/mods-av
    2 KB (196 words) - 14:07, 3 October 2013
  • Suse-ubuntu equivalent commands
    {| class="wikitable sortable" border=1
    388 bytes (54 words) - 13:31, 19 September 2013
  • Cisco LinkSys WAG160N
    This router listens to IP 192.168.0.1 by default. To manage it, connect it to your [[network]] and assign a virtu # ping 192.168.0.1
    378 bytes (49 words) - 08:23, 2 November 2012
  • Bash operators
    for i in $(seq 1 1 100); do echo $i; done ...in there, too. In these cases, you can redirect stderr to stdout with "2>&1". (Of course, it is also possible to redirect stdout to stderr this way, if
    3 KB (413 words) - 13:22, 21 March 2021
  • Teaming your network cards
    BONDING_MODULE_OPTS='miimon=100 mode=1 use_carrier=0' UP BROADCAST RUNNING MASTER MULTICAST MTU:9000 Metric:1
    4 KB (420 words) - 21:15, 31 August 2011
  • Set up a firewall
    echo "1" > /proc/sys/net/ipv4/ip_forward
    340 bytes (53 words) - 08:39, 21 November 2010
  • Qtnx
    autoreconf: /usr/bin/autoconf failed with exit status: 1
    547 bytes (74 words) - 08:04, 21 July 2014
  • Defragment
    main.c: 1 extent found
    470 bytes (70 words) - 12:52, 8 November 2009
  • Uname
    Linux tweedleburg 3.4.11-2.16-desktop #1 SMP PREEMPT Wed Sep 26 17:05:00 UTC 2012 (259fc87) x86_64 x86_64 x86_64 GNU
    434 bytes (59 words) - 09:39, 19 December 2012
  • Set up an iscsi storage
    [fa084c] ''192.168.0.5'':3260,1 ''iqn.2001-04.com.example:storage.disk2.sys1.xyz'' [3727f9] 127.0.0.1:3260,1 ''iqn.2001-04.com.example:storage.disk2.sys1.xyz''
    4 KB (553 words) - 17:16, 1 April 2020
  • Bash
    for ((i=1; i<6; i++)); do for i in `seq 1 5`; do echo $i; done
    1 KB (245 words) - 15:24, 21 January 2012
  • I/O sniffing
    dd if=/dev/sdg count=1 dd if=/dev/sdg count=1 iflag=direct
    3 KB (444 words) - 04:15, 19 April 2014
  • Vlc
    == SUSE Linux 12.1 == This shows how to compile vlc from source using version 1.1.12 and SUSE 11.4 as an example.
    3 KB (451 words) - 10:28, 1 March 2020
  • Set up a terminal server using VNC
    ...ur local computer as a display only. For this example I used SUSE Linux 13.1 but it should work same or similar on other distributions as well. # vncviewer 54.186.202.224:1
    3 KB (403 words) - 14:57, 24 July 2014
  • Horde
    ...work same or similar. It [[install]]s [[horde]] on the local host 127.0.0.1. [[wget]] http://ftp.horde.org/pub/horde-webmail/horde-webmail-1.2.5.tar.gz
    2 KB (230 words) - 18:08, 19 October 2013
  • Build rpm packages with the rpmbuild command
    mkdir hello-1.0 cd hello-1.0
    4 KB (566 words) - 17:23, 12 March 2014
  • Gdb
    Breakpoint 1 at 0x400f40 Breakpoint 1, 0x00007ffff71cfc70 in geteuid () from /lib64/libc.so.6
    4 KB (524 words) - 12:33, 19 January 2020
  • Snmp
    Nmap scan report for localhost (127.0.0.1) Nmap done: 1 IP address (1 host up) scanned in 1.08 seconds
    4 KB (493 words) - 10:45, 22 January 2015
  • Sbd
    1 vm2 reset vm1
    417 bytes (66 words) - 07:56, 12 February 2014
  • File extensions and how you open the files
    {| class="wikitable sortable" border=1
    845 bytes (106 words) - 07:02, 17 August 2014
  • Ping
    # ping 192.168.0.1 PING 192.168.0.1 (192.168.0.1) 56(84) bytes of data.
    3 KB (424 words) - 08:32, 21 April 2014
  • Ps
    ps -eo pcpu,pid,user,args | sort -k 1 -r | head -10 * [http://www.manpagez.com/man/1/ps/ ps' man page]
    515 bytes (73 words) - 08:43, 24 April 2014
  • Shred
    shred -n 1 -z -v ''/dev/sdx''
    400 bytes (77 words) - 08:06, 16 July 2011
  • Strace: what a process does
    <pic border=1 src="http://www.linuxintro.org/strace-mindmap.jpg" width=50% align=right ca [pid 15287] write(6, "W", 1) = 1
    9 KB (1,134 words) - 08:20, 22 July 2023
  • Dmidecode
    DMI type 1, 25 bytes.
    848 bytes (107 words) - 09:15, 4 February 2012
  • Conversion
    -rw-r--r-- 1 root root 23682332 Aug 18 20:10 Various Artists - 04 - Wer Hat Die Schönst Encoding as 44.1 kHz j-stereo MPEG-1 Layer III (11x) 128 kbps qval=3
    3 KB (362 words) - 18:20, 18 August 2014
  • Df
    udev 2.0G 304K 2.0G 1% /dev * [http://www.manpagez.com/man/1/df/ df man page]
    546 bytes (81 words) - 09:13, 23 April 2014
  • Best Linux games
    {| class="wikitable sortable" border=1 1 (Hated it)
    2 KB (328 words) - 19:05, 24 November 2015
  • Greylisting
    tar xvzf postgrey-1.32.tar.gz ./postgrey --inet 127.0.0.1:60000
    2 KB (260 words) - 17:50, 3 March 2013
  • Dyndns
    == SUSE Linux 12.1 == ...test -x /usr/lib/cron/run-crons && /usr/lib/cron/run-crons >/dev/null 2>&1
    3 KB (417 words) - 05:37, 8 January 2012
  • Watch DVB-S
    = SUSE Linux 12.1 = On 2012-07-08 I got the Cinergy S2 USB HD tuner working on SUSE 12.1:
    2 KB (381 words) - 05:25, 21 August 2012
  • Xdmcp
    * connect with vncviewer localhost:1 * connect with vncviewer localhost:1
    2 KB (312 words) - 11:13, 29 January 2014
  • Bridge
    1: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436 qdisc noqueue state UNKNOWN inet 127.0.0.1/8 scope host lo
    2 KB (280 words) - 09:58, 21 October 2011
  • Apt-get
    gstreamer0.10-plugins-good: Depends: libcucul0 (>= 0.99.beta14-1) but it is not going to be installed libavformat52 libschroedinger-1.0-0 mplayer-skin-blue libcdparanoia0
    6 KB (772 words) - 05:24, 31 January 2012
  • I don't get mails any longer
    SMTP Error (-1): Connection to server failed. Trying ::1...
    2 KB (247 words) - 20:57, 13 February 2014
  • Tcpdump
    21:46:20.363109 IP6 localhost.49816 > localhost.http: Flags [.], ack 1, win 342, options [nop,nop,TS val 1957802 ecr 1957802], length 0 ...20.363153 IP6 localhost.49816 > localhost.http: Flags [P.], seq 1:117, ack 1, win 342, options [nop,nop,TS val 1957802 ecr 1957802], length 116
    4 KB (436 words) - 20:27, 31 March 2020
  • Perl
    ...dor_perl/5.10.0 /usr/lib/perl5/vendor_perl .) at AcidRip/interface.pm line 1.
    545 bytes (81 words) - 07:38, 9 December 2013
  • Screenshots under Ubuntu
    {| class="wikitable sortable" border=1
    718 bytes (110 words) - 20:05, 19 April 2020
  • Iostat
    sdb 1.35 5.76 28.55 1387011 6870465 sda 1.35 5.56 28.55 1337701 6870465
    2 KB (210 words) - 20:03, 25 March 2021
  • Sed
    sed 's/\ \{1,\}/\ /g'
    818 bytes (130 words) - 19:31, 7 February 2013
  • Install software
    {| class="wikitable sortable" border=1
    703 bytes (104 words) - 12:01, 27 May 2012
  • Blocks, block devices and block sizes
    tweedleburg:~ # dd if=/dev/sda1 of=/dev/null count=1 1+0 records in
    5 KB (739 words) - 19:12, 23 May 2021
  • Use your wiimote as mouse
    * find out the you can bluetooth-connect to your WiiMote. Press '''1''' and '''2''' on your WiiMote:
    720 bytes (106 words) - 10:55, 28 February 2010
  • Install Linux on a USB disk by cloning your computer
    [[tar]] -c [[Bash_operators#.24.28.29|$(]][[ls]] -1 [[piping||]] [[grep]] -Ev "[[regex|proc|sys|tmp|media|mnt]]"[[Bash_operator === Possibility (1) ===
    8 KB (1,324 words) - 08:50, 1 March 2020
  • Build rpm packages with checkinstall
    checkinstall 1.6.2, Copyright 2002 Felipe Eduardo Sanchez Diaz Duran 1 - Summary: [ This is a program that prints a friendly hello world greeting
    3 KB (371 words) - 16:06, 6 February 2011
  • Connect to the internet via an UMTS connection using SUSE 11.4
    64 bytes from www.heise.de (193.99.144.85): icmp_req=1 ttl=244 time=381 ms 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436 qdisc noqueue state UNKNOWN
    3 KB (405 words) - 13:35, 25 December 2011

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