hadoop.sh
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上传日期:2018-01-08
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- #!/usr/bin/env bash
- # Licensed to the Apache Software Foundation (ASF) under one or more
- # contributor license agreements. See the NOTICE file distributed with
- # this work for additional information regarding copyright ownership.
- # The ASF licenses this file to You under the Apache License, Version 2.0
- # (the "License"); you may not use this file except in compliance with
- # the License. You may obtain a copy of the License at
- #
- # http://www.apache.org/licenses/LICENSE-2.0
- #
- # Unless required by applicable law or agreed to in writing, software
- # distributed under the License is distributed on an "AS IS" BASIS,
- # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- # See the License for the specific language governing permissions and
- # limitations under the License.
- # Provides tab completion for the main hadoop script.
- #
- # On debian-based systems, place in /etc/bash_completion.d/ and either restart
- # Bash or source the script manually (. /etc/bash_completion.d/hadoop.sh).
- _hadoop() {
- local script cur prev temp
- COMPREPLY=()
- cur=${COMP_WORDS[COMP_CWORD]}
- prev=${COMP_WORDS[COMP_CWORD-1]}
- script=${COMP_WORDS[0]}
-
- # Bash lets you tab complete things even if the script doesn't
- # exist (or isn't executable). Check to make sure it is, as we
- # need to execute it to get options/info
- if [ -f "$script" -a -x "$script" ]; then
- case $COMP_CWORD in
- 1)
- # Completing the first argument (the command).
- temp=`$script | grep -n "^s*or"`;
- temp=`$script | head -n $((${temp%%:*} - 1)) | awk '/^ / {print $1}' | sort | uniq`;
- COMPREPLY=(`compgen -W "${temp}" -- ${cur}`);
- return 0;;
- 2)
- # Completing the second arg (first arg to the command)
- # The output of commands isn't hugely consistent, so certain
- # names are hardcoded and parsed differently. Some aren't
- # handled at all (mostly ones without args).
- case ${COMP_WORDS[1]} in
- dfs | dfsadmin | fs | job | pipes)
- # One option per line, enclosed in square brackets
- temp=`$script ${COMP_WORDS[1]} 2>&1 | awk '/^[ t]*[/ {gsub("[[\]]", ""); print $1}'`;
- COMPREPLY=(`compgen -W "${temp}" -- ${cur}`);
- return 0;;
- jar)
- # Any (jar) file
- COMPREPLY=(`compgen -A file -- ${cur}`);
- return 0;;
- namenode)
- # All options specified in one line,
- # enclosed in [] and separated with |
- temp=`$script ${COMP_WORDS[1]} -help 2>&1 | grep Usage: | cut -d '[' -f 2- | awk '{gsub("] \| \[|]", " "); print $0}'`;
- COMPREPLY=(`compgen -W "${temp}" -- ${cur}`);
- return 0;;
- *)
- # Other commands - no idea
- return 1;;
- esac;;
- *)
- # Additional args
-
- case ${COMP_WORDS[1]} in
- dfs | fs)
- # DFS/FS subcommand completion
- # Pull the list of options, grep for the one the user is trying to use,
- # and then select the description of the relevant argument
- temp=$((${COMP_CWORD} - 1));
- temp=`$script ${COMP_WORDS[1]} 2>&1 | grep -- "${COMP_WORDS[2]} " | awk '{gsub("[[ \]]", ""); print $0}' | cut -d '<' -f ${temp}`;
- if [ ${#temp} -lt 1 ]; then
- # No match
- return 1;
- fi;
- temp=${temp:0:$((${#temp} - 1))};
- # Now do completion based on the argument
- case $temp in
- path | src | dst)
- # DFS path completion
- temp=`$script ${COMP_WORDS[1]} -ls "${cur}*" 2>&1 | grep -vE '^Found ' | cut -f 1 | awk '{gsub("^.* ", ""); print $0;}'`
- COMPREPLY=(`compgen -W "${temp}" -- ${cur}`);
- return 0;;
- localsrc | localdst)
- # Local path completion
- COMPREPLY=(`compgen -A file -- ${cur}`);
- return 0;;
- *)
- # Other arguments - no idea
- return 1;;
- esac;;
- *)
- # Other subcommands - no idea
- return 1;;
- esac;
- esac;
- fi;
- }
- complete -F _hadoop hadoop