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synced 2024-12-22 20:57:53 +00:00
Fixed env_parallel so it works post-shell-shock.
This commit is contained in:
Ole Tange
parent
dce64026cc
commit
763dd12caa
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@ -238,13 +238,18 @@ A central piece of command generation was rewritten making this release beta qua
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New in this release:
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* --hostgroup
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Thanks to Michel Courtine for developing a prototype.
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* Remote systems can be divided into hostgroups (e.g. web and db) by prepending '@groupname/' to the sshlogin. Multiple groups can be given by separating groups with '+'. E.g. @web/www1 @web+db/www2 @db/mariadb
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* Remote execution can be restricted to servers that are part of one or more groups by '@groupname' as an sshlogin. Multiple groups can be given by separating groups with '+'. E.g. -S @web or -S @db+web
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* With --hostgroup you can restrict arguments to certain hostgroups by appending '@groupname' to the argument. Multiple groups can be given by separating groups with '+'. E.g. my_web_arg@web db-or-web-arg@db+web db-only-arg@db Thanks to Michel Courtine for developing a prototype for this.
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* GNU Parallel was cited in: SlideToolkit: An Assistive Toolset for the Histological Quantification of Whole Slide Images http://www.plosone.org/article/info%3Adoi%2F10.1371%2Fjournal.pone.0110289#close
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* GNU Parallel was cited in: Exploring a multiprocessor design space to analyze the impact of using STT-RAM in the memory hierarchy http://conservancy.umn.edu/bitstream/handle/11299/167286/Borse_umn_0130M_15431.pdf
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* Command-Line OCR with Tesseract on Mac OS X https://ryanfb.github.io/etc/2014/11/13/command_line_ocr_on_mac_os_x.html
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* Bug fixes and man page updates.
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GNU Parallel - For people who live life in the parallel lane.
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@ -507,6 +507,7 @@ sub nindex {
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}
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$sleep = ::reap_usleep($sleep);
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}
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# TODO Why is needed?
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# start_more_jobs();
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return $something_written;
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}
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@ -1159,7 +1160,7 @@ sub parse_env_var {
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my @qcsh = (map { my $a=$_; "setenv $a " . env_quote($ENV{$a}) }
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grep { not /^parallel_bash_environment$/ } @non_functions);
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my @qbash = (map { my $a=$_; "export $a=" . env_quote($ENV{$a}) }
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grep { not /^parallel_bash_environment$/ } @non_functions, @bash_pre_shellshock);
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@non_functions, @bash_pre_shellshock);
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push @qbash, map { my $a=$_; "eval $a\"\$$a\"" } @bash_pre_shellshock;
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push @qbash, map { /BASH_FUNC_(.*)\(\)/; "$1 $ENV{$_}" } @bash_post_shellshock;
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@ -1187,7 +1188,7 @@ sub parse_env_var {
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. join(" && ", @qbash)
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.q{;});
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if($ENV{'parallel_bash_environment'}) {
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$Global::envvar .= "parallel_bash_environment;\n";
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$Global::envvar .= 'eval "$parallel_bash_environment";'."\n";
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}
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}
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$Global::envvarlen = length $Global::envvar;
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111
src/parallel.pod
111
src/parallel.pod
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@ -80,20 +80,22 @@ If it is a Bash function you need to B<export -f> the function
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first. To use aliases copy the full environment as described under
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B<--env> and use B<env_parallel> instead of B<parallel>.
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If it is a zsh function you will need to use this helper function
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B<exportf> to export and to set $PARALLEL_SHELL to bash:
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function exportf (){
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export $(echo $1)="`whence -f $1 | sed -e "s/$1 //" `"
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}
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function my_func(){
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echo $1;
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echo "hello";
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}
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exportf my_func
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PARALLEL_SHELL=/bin/bash parallel "my_func {}" ::: 1 2
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=cut
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# If it is a zsh function you will need to use this helper function
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# B<exportf> to export and to set $PARALLEL_SHELL to bash:
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#
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# function exportf (){
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# export $(echo $1)="`whence -f $1 | sed -e "s/$1 //" `"
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# }
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#
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# function my_func(){
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# echo $1;
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# echo "hello";
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# }
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#
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# exportf my_func
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# PARALLEL_SHELL=/bin/bash parallel "my_func {}" ::: 1 2
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=pod
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The command cannot contain the character \257 (macron: ¯).
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@ -434,15 +436,15 @@ than a single record.
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I<size> defaults to 1M.
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See B<--pipe> for use of this.
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See B<--pipe> and B<--pipepart> for use of this.
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=item B<--cat>
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Create a temporary file with content. Normally B<--pipe> will give
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data to the program on stdin (standard input). With B<--cat> GNU
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B<parallel> will create a temporary file with the name in {}, so you
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can do: B<parallel --pipe --cat wc {}>.
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Create a temporary file with content. Normally B<--pipe>/B<--pipepart>
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will give data to the program on stdin (standard input). With B<--cat>
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GNU B<parallel> will create a temporary file with the name in {}, so
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you can do: B<parallel --pipe --cat wc {}>.
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See also B<--fifo>.
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@ -503,23 +505,21 @@ output) unless B<--decompress-program> is given.
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=item B<--ctrlc>
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Sends SIGINT to tasks running on remote computers thus killing them.
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If receiving SIGNING, GNU B<parallel> will send SIGINT to tasks
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running on remote computers thus killing them.
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=item B<--delimiter> I<delim>
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=item B<-d> I<delim>
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Input items are terminated by the specified character. Quotes and
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backslash are not special; every character in the input is taken
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literally. Disables the end-of-file string, which is treated like any
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other argument. This can be used when the input consists of simply
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newline-separated items, although it is almost always better to design
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your program to use --null where this is possible. The specified
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delimiter may be a single character, a C-style character escape such
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as \n, or an octal or hexadecimal escape code. Octal and
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hexadecimal escape codes are understood as for the printf command.
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Multibyte characters are not supported.
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Input items are terminated by I<delim>. Quotes and backslash are not
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special; every character in the input is taken literally. Disables
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the end-of-file string, which is treated like any other argument. The
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specified delimiter may be characters, C-style character escapes such
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as \n, or octal or hexadecimal escape codes. Octal and hexadecimal
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escape codes are understood as for the printf command. Multibyte
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characters are not supported.
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=item B<--dirnamereplace> I<replace-str>
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@ -531,8 +531,8 @@ dirname of input line.
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=item B<-E> I<eof-str>
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Set the end of file string to eof-str. If the end of file string
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occurs as a line of input, the rest of the input is ignored. If
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Set the end of file string to I<eof-str>. If the end of file string
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occurs as a line of input, the rest of the input is not read. If
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neither B<-E> nor B<-e> is used, no end of file string is used.
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@ -540,16 +540,17 @@ neither B<-E> nor B<-e> is used, no end of file string is used.
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Delay starting next job I<secs> seconds. GNU B<parallel> will pause
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I<secs> seconds after starting each job. I<secs> can be less than 1
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seconds.
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second.
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=item B<--dry-run>
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Print the job to run on stdout (standard output), but do not run the
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job. Use B<-v -v> to include the ssh/rsync wrapping if the job would
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be run on a remote computer. Do not count on this literaly, though, as
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the job may be scheduled on another computer or the local computer if
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: is in the list.
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job. Use B<-v -v> to include the wrapping that GNU Parallel generates
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(for remote jobs, B<--tmux>, B<--nice>, B<--pipe>, B<--pipepart>,
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B<--fifo> and B<--cat>). Do not count on this literaly, though, as the
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job may be scheduled on another computer or the local computer if : is
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in the list.
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=item B<--eof>[=I<eof-str>]
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@ -571,8 +572,8 @@ remote execution.
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In Bash I<var> can also be a Bash function - just remember to B<export
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-f> the function, see B<command>.
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The variable '_' is special. It will copy all environment variables
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except for the ones mentioned in ~/.parallel/ignored_vars.
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The variable '_' is special. It will copy all exported environment
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variables except for the ones mentioned in ~/.parallel/ignored_vars.
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To copy Bash arrays you need an importer function, as Bash arrays
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cannot be exported:
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@ -594,15 +595,13 @@ cannot be exported:
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parallel --env my_importer \
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'my_importer; echo "{}" "${indexed[{}]}" "${assoc[${indexed[{}]}]}"' ::: "${!indexed[@]}"
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To copy the full environment use this function (e.g. by putting it in .bashrc):
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To copy the full environment (both exported and not exported variables
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and functions) use this function (e.g. by putting it in .bashrc):
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env_parallel() {
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export parallel_bash_environment='() {
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'"$(echo "shopt -s expand_aliases 2>/dev/null"; alias;typeset -p | grep -vFf <(readonly; echo GROUPS; echo FUNCNAME; echo DIRSTACK; echo _; echo PIPESTATUS; echo USERNAME) | grep -v BASH_;typeset -f)"'
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}'
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# Run as: env_parallel [normal parallel options]
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`which parallel` "$@"
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unset parallel_bash_environment
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export parallel_bash_environment="$(echo "shopt -s expand_aliases 2>/dev/null"; alias;typeset -p | grep -vFf <(readonly; echo GROUPS; echo FUNCNAME; echo DIRSTACK; echo _; echo PIPESTATUS; echo USERNAME) | grep -v BASH_;typeset -f)";
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`which parallel` "$@";
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unset parallel_bash_environment;
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}
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# call as:
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env_parallel [normal parallel options]
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@ -615,25 +614,28 @@ See also: B<--record-env>.
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Show the estimated number of seconds before finishing. This forces GNU
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B<parallel> to read all jobs before starting to find the number of
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jobs. GNU B<parallel> normally only reads the next job to run.
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Implies B<--progress>.
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See also: B<--bar>, B<--progress>.
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=item B<--fg>
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Run command in foreground thus GNU B<parallel> will wait for
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completion of the command before exiting.
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See also B<--bg>, B<man sem>.
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Implies B<--semaphore>.
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See also B<--bg>, B<man sem>.
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=item B<--fifo>
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Create a temporary fifo with content. Normally B<--pipe> will give
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data to the program on stdin (standard input). With B<--fifo> GNU
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B<parallel> will create a temporary fifo with the name in {}, so you
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can do: B<parallel --pipe --fifo wc {}>.
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Create a temporary fifo with content. Normally B<--pipe> and
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B<--pipepart> will give data to the program on stdin (standard
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input). With B<--fifo> GNU B<parallel> will create a temporary fifo
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with the name in {}, so you can do: B<parallel --pipe --fifo wc {}>.
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Beware: If data is not read from the fifo, the job will block forever.
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@ -724,7 +726,7 @@ For B<--pipe> the matched header will be prepended to each output.
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B<--header :> is an alias for B<--header '.*\n'>.
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If I<regexp> is a number, it will match that many lines.
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If I<regexp> is a number, it is a fixed number of lines.
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=item B<--hostgroups> (alpha testing)
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@ -775,7 +777,7 @@ To convert the times into ISO-8601 strict do:
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perl -a -F"\t" -ne \
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'chomp($F[2]=`date -d \@$F[2] +%FT%T`); print join("\t",@F)'
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See also B<--resume>.
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See also B<--resume> B<--resume-failed>.
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=item B<--jobs> I<N>
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@ -997,6 +999,7 @@ all the output from one server will be grouped together.
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Instead of printing the output to stdout (standard output) the output
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of each job is saved in a file and the filename is then printed.
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See also: B<--results>
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=item B<--pipe>
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@ -29,6 +29,7 @@ echo '### Test bug #34241: --pipe should not spawn unneeded processes'
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echo '### --env _'
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fUbAr="OK FUBAR" parallel -S parallel@lo --env _ echo '$fUbAr $DEBEMAIL' ::: test
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fUbAr="OK FUBAR" parallel -S csh@lo --env _ echo '$fUbAr $DEBEMAIL' ::: test
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echo '### --env _ with explicit mentioning of normally ignored var $DEBEMAIL'
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fUbAr="OK FUBAR" parallel -S parallel@lo --env DEBEMAIL,_ echo '$fUbAr $DEBEMAIL' ::: test
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fUbAr="OK FUBAR" parallel -S csh@lo --env DEBEMAIL,_ echo '$fUbAr $DEBEMAIL' ::: test
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@ -37,6 +38,17 @@ echo 'bug #40137: SHELL not bash: Warning when exporting funcs'
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. <(printf 'myfunc() {\necho $1\n}'); export -f myfunc; parallel --env myfunc -S lo myfunc ::: no_warning
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. <(printf 'myfunc() {\necho $1\n}'); export -f myfunc; SHELL=/bin/sh parallel --env myfunc -S lo myfunc ::: warning
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echo 'env_parallel from man page - transfer non-exported var'
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env_parallel() {
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export parallel_bash_environment="$(echo "shopt -s expand_aliases 2>/dev/null"; alias;typeset -p | grep -vFf <(readonly; echo GROUPS; echo FUNCNAME; echo DIRSTACK; echo _; echo PIPESTATUS; echo USERNAME) | grep -v BASH_;typeset -f)";
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`which parallel` "$@";
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unset parallel_bash_environment;
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};
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var=nonexported env_parallel -S parallel@lo echo '$var' ::: variable
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echo 'compared to parallel - no transfer non-exported var'
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var=nonexported parallel -S parallel@lo echo '$var' ::: variable
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echo '### bug #40002: --files and --nonall seem not to work together:'
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parallel --files --nonall -S localhost true | tee >(parallel rm) | wc -l
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@ -59,6 +59,14 @@ bug #40137: SHELL not bash: Warning when exporting funcs
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no_warning
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. <(printf 'myfunc() {\necho $1\n}'); export -f myfunc; SHELL=/bin/sh parallel --env myfunc -S lo myfunc ::: warning
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warning
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echo 'env_parallel from man page - transfer non-exported var'
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env_parallel from man page - transfer non-exported var
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env_parallel() { export parallel_bash_environment="$(echo "shopt -s expand_aliases 2>/dev/null"; alias;typeset -p | grep -vFf <(readonly; echo GROUPS; echo FUNCNAME; echo DIRSTACK; echo _; echo PIPESTATUS; echo USERNAME) | grep -v BASH_;typeset -f)"; `which parallel` "$@"; unset parallel_bash_environment; }; var=nonexported env_parallel -S parallel@lo echo '$var' ::: variable
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nonexported variable
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echo 'compared to parallel - no transfer non-exported var'
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compared to parallel - no transfer non-exported var
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var=nonexported parallel -S parallel@lo echo '$var' ::: variable
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variable
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echo '### bug #40002: --files and --nonall seem not to work together:'
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### bug #40002: --files and --nonall seem not to work together:
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parallel --files --nonall -S localhost true | tee >(parallel rm) | wc -l
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