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Commands by dexterhu

Commands by dexterhu from sorted by
Terminal - Commands by dexterhu - 7 results
export PATH=$PATH$(find "$PWD" -name '.*' -prune -o -type f -a -perm /u+x -printf ':%h\n' | sort -u | tr -d '\n'); echo $PATH
2011-03-11 19:31:17
User: dexterhu
Functions: echo export find sort tr
-1
Up
Down
recursively add all sub folders with executable file of current folder to PATH environment variable

(1) don't run twice, or the same folder will occur in $PATH.

(2) otherwise you need to start a new terminal

Show sample output | Comments (2) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
CLASSPATH=.; export CLASSPATH=$CLASSPATH$(find "$PWD" -name '*.jar' -type f -printf ':%p\n' | sort -u | tr -d '\n'); echo $CLASSPATH
2011-03-11 19:21:15
User: dexterhu
Functions: echo export find sort tr
-1
Up
Down
one line command to recursively add all jar files in current folder to java class path

a pretty simple script when running java programs from command line

Show sample output | Comments (0) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
echo "Simplied Chinese:"; while read -r line; do echo "Traditional Chinese:"; echo $line | iconv -f utf8 -t gb2312 | iconv -f gb2312 -t big5 | iconv -f big5 -t utf8; done
2011-03-11 12:26:25
User: dexterhu
Functions: echo iconv read
0
Up
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a simple interactive tool to convert Simplified Chinese (typed by pinyin) to Traditional Chinese 简繁中文转换

a simple interactive tool to convert Simplified Chinese (typed by pinyin) to Traditional Chinese

Show sample output | Comments (9) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
sort -t"," -n -k5 file.csv # according to the 5th field NUMERICALLY!!
2011-03-11 09:09:57
User: dexterhu
Functions: sort
0
Up
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sort a csv file according to a particular n th field numerically (quicker than excel)

-n is very important, otherwise it's string comparison

Show sample output | Comments (0) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
ps -eo pmem,pid,comm --no-headers | sort -k1 -rn | head -10
2011-03-11 04:51:35
User: dexterhu
Functions: head ps sort
0
Up
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show top 10 most memory hungry process with a simple format of (%mem, pid, short command)

Pros: the format is very simple, there is no need to show every columns, and full command with args

the first column is memory consumption %

the second column is pid

the third is just the command (without full arguments, most application's arguments are too long)

You can decide which application to kill then.

Show sample output | Comments (2) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
pdsh -R ssh -w se00[1-5] # a list of host names
2011-03-10 18:29:24
User: dexterhu
Functions: host ssh
1
Up
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parrallel execution of a command on remote hosts by ssh or rsh or ...

parrallel execution of a command on remote host by ssh or rsh or ...

very useful for cluster management (software update)

Show sample output | Comments (0) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
killall -r 'a regular expression'
2011-03-07 07:29:42
User: dexterhu
Functions: killall
0
Up
Down
Kill a process by its partial name

This is usefull when we don't know the exact name of the process, but the application name

A limitation is that the regular expression only tries to match the last part of the full command (i.e. the bin file name itself).

But this is way shorter than the following one:

ps axww | grep SomeCommand | awk '{ print $1 }' | xargs kill

Show sample output | Comments (2) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate