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| technology:unix:useful_commands 09.09.2010 09:52 | technology:unix:useful_commands 03.18.2013 05:53 current | ||
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| locate Data.fs | xargs ls -l ; xargs to pipe results of one command to another | locate Data.fs | xargs ls -l ; xargs to pipe results of one command to another | ||
| find ./ -name '*py' | xargs grep signal ; Find string "signal" inside text of .py files; xargs looks inside the files instead of at the file name | find ./ -name '*py' | xargs grep signal ; Find string "signal" inside text of .py files; xargs looks inside the files instead of at the file name | ||
| + | grep -ir "timeout" . ; find the string "timeout" in any file below the current dir | ||
| = Various = | = Various = | ||
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| ps -A -o pid,state,command | grep D ; find process that's blocking due to IO wait | ps -A -o pid,state,command | grep D ; find process that's blocking due to IO wait | ||
| ; 'D' is for Delayed processes, IO wait is most common cause | ; 'D' is for Delayed processes, IO wait is most common cause | ||
| - | grep -ir "timeout" . ; find the string "timeout" in any file below the current dir | ||
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| lsof /media/documents/ ; show list of files open | lsof /media/documents/ ; show list of files open | ||
| lsof / | grep media ; in case above doesnt work, lsof seems to work better on root and then grep it out for what you need | lsof / | grep media ; in case above doesnt work, lsof seems to work better on root and then grep it out for what you need | ||
| + | lsof +D /var/log/ ; list of files open under the given directory (recursive) (use +d for non-recurse) | ||
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| = Package Management = | = Package Management = | ||
| rpm -qa ; Packages installed on system | rpm -qa ; Packages installed on system | ||
| + | rpm -qa | grep httpd* ; See if httpd is installed | ||
| + | yum list installed httpd ; See if httpd is installed | ||
| yum provides /etc/fstab ; name of the package which contains a particular file | yum provides /etc/fstab ; name of the package which contains a particular file | ||
| yum list ; lists information about available packages | yum list ; lists information about available packages | ||