Commands using echo (1,545)
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0KEY_HASH=`openssl rsa -in $KEY_PATH -modulus -noout | openssl md5` && CRT_HASH=`openssl x509 -in $CERT_PATH -modulus -noout | openssl md5`; if [ "$KEY_HASH" != "$CRT_HASH" ];then echo "MD5 sums between .key and .crt files DO NOT MATCH";fi
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This will find all the -Xmx[BIGINT] running on a system, add them up for you and give you the total. Show Sample Output
0output=$(ps -ef|grep -i java 2>/dev/null); for w in ${output[@]}; do if [[ $w =~ .*Xmx.* ]]; then result=$(grep -oP "[0-9]+" <<< $w); echo $result ;fi ; done| awk 'BEGIN {sum=0} {for(i=1; i<=NF; i++) sum+=$i } END {print sum}' -
If you want avoid to be annoyed when playing your favourite video files with your video player, first run this command to stash wrong files (and test tricks to play these wrong files). Show Sample Output
0for i in *.flv *.mkv *.avi; do mplayer -ao null -vo null -ss 0 -endpos 1 >/dev/null "$i" 2> >(grep -qi error && echo >&2 "$i seems bad"); done -
0word=$(shuf -n4 /usr/share/dict/words); for w in ${word[@]}; do w=${w^}; w=${w//\'/}; p+=$w; done; echo $p
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Should work with sh, bash, etc. Show Sample Output
0port=32768; while netstat -atn | grep -q :$port; do port=$(expr $port + 1); done; echo $port -
0for i in `ip addr show dev eth1 | grep inet | awk '{print $2}' | cut -d/ -f1`; do echo -n $i; echo -en '\t'; host $i | awk '{print $5}'; done
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This command is for producing GNU sha256sum-compatible hashes on UNIX systems that don't have sha256sum but do have OpenSSL, such as stock IBM AIX. 1.- Saves a wrapper script for UNIX find that does the following: A.- Feeds a file to openssl on SHA256 hash calculation mode B.- Echoes the output followed by the filename 2.- Makes the file executable 3.- Runs find on a directory, only processing files, and running on each one the wrapper script that calculates SHA256 hashes Pending is figuring out how to verify a sha256sum file on a similar environment. Show Sample Output
0echo '#! /usr/bin/ksh\necho `cat $1 | openssl dgst -sha256` $1' > sslsha256; chmod +x sslsha256; find directory -type f -exec ./sslsha256 \{\} \; -
This command is used to verify a sha256sum-formatted file hash list on IBM AIX or any other UNIX-like OS that has openssl but doesn't have sha256sum by default. Steps: 1: Save to the filesystem a script that: A: Receives as arguments the two parts of one line of a sha256sum listing B: Feeds a file into openssl on SHA256 standard input hash calculation mode, and saves the result C: Compares the calculated hash against the one received as argument D: Outputs the result in a sha256sum-like format 2: Make the script runnable 3: Feed the sha256sum listing to xargs, running the aforementioned script and passing 2 arguments at a time Show Sample Output
0echo '#! /usr/bin/ksh\ncat $2 | openssl dgst -sha256 | read hashish; if [[ $hashish = $1 ]]; then echo $2: OK; else echo $2: FAILED; fi;' > shacheck; chmod +x shacheck; cat hashishes.sha256 | xargs -n 2 ./shacheck; -
If the HISTTIMEFORMAT is set, the time stamp information associated with each history entry is written to the history file, marked with the history comment character. Show Sample Output
0echo 'export HISTTIMEFORMAT="%d/%m/%y %T "' >> ~/.bash_profile -
0clear; tput cup 8 8; for i in $(seq 1 10); do echo -n "$((11-$i)) ";sleep 1; done; tput cup 10 8; echo -e "DONE\n\n"
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0find .git/objects -type f -printf "%P\n" | sed s,/,, | while read object; do echo "=== $obj $(git cat-file -t $object) ==="; git cat-file -p $object; done
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Strips the audio track from a webm video. Use this in combination with clive or youtube-dl.
0for file in "$@"; do name=$(basename "$file" .webm) echo ffmpeg -i $file -vn -c:a copy $name.ogg ffmpeg -i "$file" -vn -c:a copy "$name.ogg" done -
I did not come up with this one myself, but found this somewhere else several months ago. Show Sample Output
0openssl rand -hex 1 | tr '[:lower:]' '[:upper:]' | xargs echo "obase=2;ibase=16;" | bc | cut -c1-6 | sed 's/$/00/' | xargs echo "obase=16;ibase=2;" | bc | sed "s/$/:$(openssl rand -hex 5 | sed 's/\(..\)/\1:/g; s/.$//' | tr '[:lower:]' '[:upper:]')/" -
Put this logging function in you're script, when need it call it. command || logme "Error with command"
0logme(){ echo "$(date +%d-%m-%Y-%H:%M) => $0 @ $1 returned error" >> persoscript.log } -
To send a text message to a phone, you need to send the text message via email. To find out how to send text messages to cell phones via email, go here - http://en.wikipedia.org/wiki/List_of_carriers_providing_Email_or_Web_to_SMS and find the carrier of the cell phone you want to send the text message to.
0while true; do echo "message here" | mutt something@something.com ; done -
Delete items from Redis, using redis-cli, by matching a key pattern. Show Sample Output
0for key in `echo 'KEYS pattern*' | redis-cli | awk '{print $1}'`; do echo DEL $key; done | redis-cli -
0echo "rootgot" | awk 'BEGIN{FIELDWIDTHS="4 3"}{print $2$1}'
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Uses urandom and tr to generate a random password. Change the value of head -c## for the lenght of the password. Show Sample Output
0echo $(< /dev/urandom tr -dc _A-Z-a-z-0-9 | head -c10) -
Check trough unix sockets if tcp port is open or close Show Sample Output
0(echo >/dev/tcp/localhost/25) &>/dev/null && echo "TCP port 25 open" || echo "TCP port 25 close" -
nc is such a powerful command, it could be used instead of any OS! :p Show Sample Output
0nc -kl 5432 -c 'echo -e "HTTP/1.1 200 OK\r\n$(date)\r\n\r\n";echo "<p>How are you today?</p>"' -
0for file in $(git ls-files | grep old_name_pattern); do git mv $file $(echo $file | sed -e 's/old_name_pattern/new_name_pattern/'); done
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This will display --> Hello World
0echo "Hello WOrld" -
Change the "run_command" to whatever command you want, and remove the "echo" to run it once you are happy.
0for i in */; do echo run_command "${i}"; done -
If you want to test output, run it like this: for fn in *.epub; do echo mv \"$fn\" \"`echo "$fn" | sed -E 's/\.*\/*(.*)( - )(.*)(\.[^\.]+)$/\3\2\1\4/' | sed -E 's/(.*) ([^ ]+)( - )(.*)/\2, \1\3\4/' `\";done > rename.txt Show Sample Output
0for fn in *.epub; do echo mv \"$fn\" \"`echo "$fn" | sed -E 's/\.*\/*(.*)( - )(.*)(\.[^\.]+)$/\3\2\1\4/' | sed -E 's/(.*) ([^ ]+)( - )(.*)/\2, \1\3\4/' `\";done | sh -
This lists the number of ogg/mp3/wav/flac files in each subdirectory of the current directory. The output can be sorted by piping it into "sort -n". Show Sample Output
0find . -type d -maxdepth 1 -print0 | xargs -0 -I{} sh -c 'find "{}" -type f | grep "ogg\|mp3\|wav\|flac$" | wc -l | tr -d "\n"; echo " {}"' - ‹ First < 41 42 43 44 45 > Last ›
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