All commands (14,187)
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8urls=('www.ubuntu.com' 'google.com'); for i in ${urls[@]}; do http_code=$(curl -I -s $i -w %{http_code}); echo $i status: ${http_code:9:3}; done
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Can be used to help perform some SEO optimizations. Show Sample Output
0wget -q -O- PAGE_URL | grep -o 'WORD_OR_STRING' | wc -w -
2mysql -u<user> -p<password> -s -e 'DESCRIBE <table>' <database> | tail -n +1 | awk '{ printf($1",")}' | head -c -1
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Using a GUI file managers you can merge directories (cut and paste). This command roughly does the same (it doesn't ask for confirmation (no problem for me) and it doesn't clean up the empty SRC directories (no problem, trivial). probably does the same:
cp -l SRC TARGET; rm -rf SRC0(cd SRC; find . -type d -exec mkdir TARGET/{} ";"; find . -type f -exec mv {} TARGET/{} ";") -
-4ps aux | grep [c]ommandname
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Postgresql specific SQL - to show count of ALL tables including relation-size (pg_relation_size = used space on filesystem) - might need a VACUUM ANALYZE before showing all counts correctly !
1SELECT relname, reltuples, pg_relation_size(relname) FROM pg_class r JOIN pg_namespace n ON (relnamespace = n.oid) WHERE relkind = 'r' AND n.nspname = 'public' ORDER BY relname; -
inside vim try: :help 42 to get the meaning of life, the universe and everything !
11$ vim ... :help 42 -
Given a file of FQDN, this simple command resolves the IP addresses of those Useful for log files or anything else that outputs domain names. Show Sample Output
1awk < file.name '{ system("resolveip -s " $1) }' -
converts between Red Hat rpm, Debian deb, Stampede slp, Slackware tgz, and Solaris pkg file formats ... It also supports LSB packages.
4alien -r -c file.deb -
0rpm -ivh 'http://www.website.com/path/to/desired_software_package.rpm'
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This is exactly the same as a wildcard - good for times when wildcards are disabled and when you want have a wildcard of a directory that is not your current ({`ls /path/to/dir`}). Does not work on older versions of Bash though.
0`ls` -
This will unarchive the entire working directory. Good for torrents (I don't know why they put each file into a seperate archive).
-2for f in *;do case "$(echo $f|sed "s/.*\.\([a-z\.]*\)/\1/g")" in zip)unzip -qqo $f&&rm $f;;tar.gz|tar.bz2)tar xf $f&&rm $f;;rar)unrar e -o+ -r -y $f&&rm $f;;7z)7z e -qqo $f;;esac;done -
diff is designed to compare two files. You can also compare directories. In this form, bash uses 'process substitution' in place of a file as an input to diff. Each input to diff can be filtered as you choose. I use find and egrep to select the files to compare.
3diff <(cd /path-1; find . -type f -print | egrep -i '\.m4a$|\.mp3$') <(cd /path-2; find . f -print | egrep -i '\.m4a$|\.mp3$') -
4file -i * | grep -c 'text/plain'
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get files without extensions, get ASCII and utf-8 as "text/plain" Show Sample Output
0file -i * | grep 'text/plain' | wc -l -
This is the same command as this one, but for OS X. http://www.commandlinefu.com/commands/view/3053/find-out-when-your-billion-second-anniversary-is-was. Show Sample Output
1date -j -v +1000000000S -f %m%d%Y mmddYYYY -
This is the same command as this one, but for OS X. http://www.commandlinefu.com/commands/view/3053/find-out-when-your-billion-second-anniversary-is-was. Show Sample Output
1date -j -v +1000000000S -f %m%d%Y mmddyyyy -
fast method for insert ip range using vim Show Sample Output
6:for i in range(1,255) | .put='192.168.0.'.i | endfor -
Use this command to insert line numbers in source files, .' ' control how spaces you insert after number. Show Sample Output
0:%s/^/\=line('.').' ' -
Replace 12/31/1970 with your birth date.
1date -d12/31/1970+1000000000sec -
This command will squeeze all consequent blank lines (including those with only space and tab charactes) to one. It will also empty the resulting line (remove the "|s/.*//" part if you don't need that).
3:g/^\s*$/,/\S/-j|s/.*// -
Check which files are opened by Firefox then sort by largest size (in MB). You can see all files opened by just replacing grep to "/". Useful if you'd like to debug and check which extensions or files are taking too much memory resources in Firefox. Show Sample Output
6FFPID=$(pidof firefox-bin) && lsof -p $FFPID | awk '{ if($7>0) print ($7/1024/1024)" MB -- "$9; }' | grep ".mozilla" | sort -rn -
this lets you edit a crontab file (which may be used as a backup as well) and insert this into your crontab. this way is especially handy, when multiple users are working on one account (e.g. root)
-6vi ~/.crontab && crontab ~/.crontab -
-5ntop
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-3atop
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