In the previous two articles of our series, we have covered most of the content of the ' ls ' command. This article is the last part of the ' LS Command ' series. If you haven't read the other two articles in the series, you can visit the links below.
Interview questions for 15 ' ls ' commands (i)
10 ' ls
Although the overall implementation of the automatic installation, but there are many needs to improve the place, such as:1. The code can only be run under the root authority, otherwise it will be wrong, this need to add permission to judge;2. You can also add several functions to reduce code redundancy;3. Some of the judgements are not intelligent enough;......The ability and the time are limited, can only write here.The Installhadoop file code is as follows:#!/bin/bash#root_password= "123456"
"), also add our standard Spark classpath, built using compute-classpath.sh.
Classpath= ' $FWDIR/bin/compute-classpath.sh '
Classdata-path= "$SPARK _qiutest_jar: $CLASSPATH"
# find Java Binary
If [-N "${java_home}"]; Then
Runner= "${java_home}/bin/java"
Else
If [' command-v Java ']; Then
Runner= "Java"
Else
echo "Java_home is not set" >2
Exit 1
Fi
Fi
If ["$SPARK _print_launch_command" = = "1"]; Then
Echo-n "Spark Command:"
echo "$RUNNER"-CP "$CLASSPATH" "$@"
echo "=============================
Hadoop cannot be started properly (1)
Failed to start after executing $ bin/hadoop start-all.sh.
Exception 1
Exception in thread "Main" Java. Lang. illegalargumentexception: Invalid URI for namenode address (check fs. defaultfs): file: // has no authority.
Localhost: At org. Apache. hadoop. HDFS. server. namenode. namenode. getaddress (namenode. Java: 214)
Localh
In the previous two articles of our series, we have covered most of the content of the ' ls ' command. This article is the last part of the ' LS Command ' series. If you haven't read the other two articles in the series, you can visit the links below.
Example of 15 basic ' ls ' commands in Linux
Interview questions for 15 '
The LS command is the most commonly used command under Linux.The LS command is the abbreviation for list. LS is used to print out the list of current directories if LS specifies a different directory then the list of files and folders in the specified directory will be displayed. The
The LS command is the most commonly used command under Linux. The LS command is the abbreviation for list, and the missing LS is used to print out the list of current directories.If LS specifies a different directory, then the list of files and folders in the specified directory is displayed. The
Here is a short list of some of the common options used with LS. Keep in mind that you can get a complete list of options by reading the LS manual page (man ls).-a– (All). Lists all the files in the directory, including hidden files (. filename).Located at the beginning of this list:And. In turn, it refers to the parent directory and your current directory.-l– Le
Here is a short list of some of the common options used with LS.Keep in mind that you can get a complete list of options by reading the LS manual page (man ls). -a-(All). Lists all the files in the directory, including hidden files (. filename).Located at the beginning of this list:And. In turn, it refers to the parent directory and your current directory.-L-Length (long). Lists the details of the contents
First explain the configured environmentSystem: Ubuntu14.0.4Ide:eclipse 4.4.1Hadoop:hadoop 2.2.0For older versions of Hadoop, you can directly replicate the Hadoop installation directory/contrib/eclipse-plugin/hadoop-0.20.203.0-eclipse-plugin.jar to the Eclipse installation directory/plugins/ (and not personally verified). For HADOOP2, you need to build the jar f
-A-all. Enumerates all the files in the directory, including hidden files (. filename).At the beginning of this list.And. In turn, the parent directory and your current directory.
-L-Length (long). Enumerates the details of the contents of the directory, including permissions (schema), owner, group, size, date created, whether the file is a link to other parts of the system, and the link's point.
-F--file type (filename). Add a symbol after each of the enumerated items. These symbols include:/in
The LS command is the most commonly used command under Linux. The LS command is the abbreviation for list. LS is used to print out the list of current directories if LS specifies a different directory then the list of files and folders in the specified directory will be displayed. The
The LS command is the most commonly used command under Linux. The LS command is the abbreviation for list. LS is used to print out the list of current directories if LS specifies a different directory then the list of files and folders in the specified directory will be displayed. The
-a-(All). Lists all the files in the directory, including hidden files (. filename).Located at the beginning of this list:And. In turn, it refers to the parent directory and your current directory.-L-Length (long). Lists the details of the contents of the directory, including permissions (mode), owner, group, size, creation date, whether the file is a link to other parts of the system, and links to the link.The file type-f-. Add a symbol after each list of items. These symbols include:/indicate
The LS command is the most commonly used command under Linux.The LS command is the abbreviation for list. LS is used to print out the list of current directories if LS specifies a different directory then the list of files and folders in the specified directory will be displayed. The
The LS command is the most commonly used command under Linux. ls command is the abbreviation of List save LS used to print out the list of the current directory if LS specifies a different directory then the list of files and folders in the specified directory is displayed. The
The LS command is the most commonly used command of Linux, and the LS command is the abbreviation for list, the main function is: Print out the current directory of the list. If LS specifies a different directory, then the list under the specified directory is displayed.1. Command formatls [options] [directory name]2. Command functionList all subdirectories and f
Linux Command Learning (3): ls command, linuxls
The ls command is the most commonly used command in linux. The ls command is short for list. By default, ls is used to print the list of the current directory. If ls specifies other directories, the list of files and folders in
.
Hadoop fs-mkdir input create input directory folder on HDFS
Hadoop fs-put ~ File/file *. txt input: upload files from the local file folder to HDFS
Run the WordCount ProgramHadoop jar/usr/local/hadoop/hadoop-0.20.2/hadoop-0.20.2-examples.jar wordcount input output"
-2.2.0/lib/native/libhadoop. so.1.0.0: ELF 32-bit LSB shared object, Intel 80386, version 1 (SYSV), dynamically linked, not stripped
The reason seems to be 32-bit and 64-bit.
Http://mail-archives.apache.org/mod_mbox/hadoop-user/201208.mbox/%3C19AD42E3F64F0F468A305399D0DF39D92EA4521578@winops07.win.compete.com%3E
Http://www.mail-archive.com/common-issues@hadoop.apache.org/msg52576.html
The operating system is 64-bit, and the software is 32-bit. Tragedy
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