| Misc |
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lock accounts
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cat /etc/shadow | grep -v ':!!' | awk 'BEGIN { FS = ":" } { print "passwd " $1 " -l" }' | sort
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unlock accounts
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cat /etc/shadow | grep ':!!' | awk 'BEGIN { FS = ":" } { print "passwd " $1 " -u" }' | sort
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| Short commands |
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date.time for cp files
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date +format "%y%m%d.%k%M%S"
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| disk usage |
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get the ten largest files (and
directories)
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du -a {#directory.name} | sort
-n -r | head -n 10
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usage per folder
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du -ck {#directory.name} | sort
-n
du -cm {#directory.name} | sort
-n
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get the ten largest files larger dan 2 Mb sort by size desc |
sudo find / -type f -size +2000k | xargs ls -lhSr
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| get the ten largest files |
find {#directory.name} -type f
2>/dev/null | sort -k 7 -r -n |
head -10
find . -printf '%s %p\n'|sort -nr|head
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get the ten largest files display
with full info
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find {#directory.name} -type f
-ls 2>/dev/null | sort -k 7 -r
-n | head -10
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get the ten largest files display
with size info
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find {#directory.name} -type f | xargs ls -as | sort -f +0 -r -n| head -10
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Find the ten largest files ignore
files ending with .pak and .tar
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find . -type f -name
"*[^.pak|.tar]" 2>/dev/null|
xargs ls -s 2>/dev/null | sort
-rn | awk '{size=$1/1024;
printf("%dMb %s\n", size,$2);}'
| head
|
Find files
ignore files ending with .pak and .tar
size > 2 Mb
older then 60 days
|
sudo find -type f -size +2000k -name "*[^.pak|.tar]" -mtime +60 | xargs ls -lhSr
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Find files and display total size on disk
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find . -name "*.undo" -ls | awk '{total += $7} END {print total}'
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| searching |
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Ignore errors while processing
instruction
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2>/dev/null
e.g.
find / -name "test" 2>/dev/null
supresses any permission denied
errors/
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| Seek and Destroy |
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find all files with .log. in the name more then 21 days old and delet them.
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sudo find ./ -name '*.log.*' -mtime +21 -exec rm {} \;
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| Network ports and such |
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check listening ports
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netstat -an | grep -i LISTEN
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| viewing |
View the last 50 lines of a file and
follow
(when new lines are added they will
be displayed)
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tail -n50 -f {#file.name}
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get all lines of a file containing
some tekst (regex!) and put the
output in another file
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grep "{#search_text}"
{#file.name}>
{#tartget_file.name}
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| line count |
wc -l {#file.name}
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Display content of file with
linenumbers starting at first
occurrence of the {#search_text}
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less -N -p {#search_text}
{#file.name}
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| File operations |
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Copy file keep permissions
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cp -p {#file.name} {#target_file.name}
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search and replace in multiple files
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perl -pi -w -e 's/search/replace/g;' *.php
-e means execute the following line of code.
-i means edit in-place
-w write warnings
-p loop
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| Directory commands |
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Put current dir on stack so you can popd back to it
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pushd .
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pop last pushed directory from stack
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popd
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Example:
| this command |
changes the current directory to: |
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cd c:\fdos\bin
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c:\fdos\bin
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pushd c:\games
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c:\games
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pushd c:\utils
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c:\utils
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popd
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c:\games
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popd
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c:\fdos\bin
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