Whats wrong here? The echo shows the correct syntax.
Please help, thank you.
#!/bin/ksh
CMD="su - db2i72 -c 'db2 list utilities'" # or this
CMD="su - db2i72 -c \'db2 list utilities\'" # or this
CMD="su - db2i72 -c \"db2 list utilities\"" # or this, always the same...
echo $CMD
$CMD
root#server:~ # ./test
su - db2i72 -c 'db2 list utilities'
Unmatched '.
Store commands in functions, not variables. You don't have to worry about quoting at all if you use a function.
cmd() {
su - db2i72 -c 'db2 list utilities'
}
cmd
Related
I need to extract some variables and functions from a zsh script into a bash script. Is there any way to do this? What I've tried (some are embarrassingly wrong, but covering everything):
. /script/path.zsh (zsh-isms exist, so it fails)
exec zsh
. /script/path.zsh
exec bash
zsh << 'EOF'
. /script/path.zsh
EOF
chsh -s zsh
. /script/path.zsh
chsh -s bash
This thread is the closest I've found. Unfortunately, I have too many items to import for that to be feasible, and neither script is anywhere near a polyglot. However, the functions and variables that I need to import are polyglots.
You can "scrape" the zsh source file for what you need, then execute the code in bash using eval. Here's an example for doing this for a few functions:
File script.zsh:
test1() {
echo "Hello from test1"
}
test2() {
echo $((1 + $1))
}
File script.sh (bash):
# Specify source script and functions
source_filename="script.zsh"
source_functions=" \
test1 \
test2 \
"
# Perform "sourcing"
function_definitions="$(python -B -c "
import re
with open('${source_filename}', mode='r') as file:
content = file.read()
for func in '${source_functions}'.split():
print(re.search(func + r'\(\).*?\n}', content, flags=re.DOTALL).group())
" )"
eval "${function_definitions}"
# Try out test functions
test1 # Hello from test1
n=5
echo "$n + 1 is $(test2 $n)" # 5 + 1 is 6
Run the bash script and it will make use of the functions test1 and test2 defined in the zsh script:
bash script.sh
The above makes use of Python, specifically its re module. It simply looks for character sequences of the form funcname(), and assumes that the function ends at the first }. So it's not very general, but works if you write your functions in this manner.
Below is a snippet from my Jenkins file -
stage('Configure replication agents') {
environment {
AUTHOR_NAME="XX.XX.XX.XX"
PUBLISHER_NAME="XX.XX.XX.XX"
REPL_USER="USER"
REPL_PASSWORD="PASSWORD"
AUTHOR_PORT="4502"
PUBLISHER_PORT="4503"
AUTHOR="http://${AUTHOR_NAME}:${AUTHOR_PORT}"
PUBLISHER="http://${PUBLISHER_NAME}:${PUBLISHER_PORT}"
S_URI= "${PUBLISHER}/bin/receive?sling:authRequestLogin=1"
}
steps {
sh 'curl -u XX:XX --data "status=browser&cmd=createPage&label=${PUBLISHER_NAME}&title=${PUBLISHER_NAME}&parentPath =/etc/replication/agents.author&template=/libs/cq/replication/templates/agent" ${AUTHOR}/bin/wcmcommand'
}
The above command, in Jenkins console, is printed as
curl -u XX:XX --data status=browser&cmd=createPage&label=XXXX&title=XXX&parentPath =/etc/replication/agents.author&template=/libs/cq/replication/templates/agent http://5XXXX:4502/bin/wcmcommand
Note how the double quotes "" are missing.
I need to preserve the double quotes after --data in this command. How do I do it?
I tried using forward slashes but that didnt work.
Cheers
To expand on my comment, a quick test revealed its the case.
You need to escape twice, once the quote for the shell with a slash, and once that slash with a slash for groovy itself.
node() {
sh 'echo "asdf"'
sh 'echo \"asdf\"'
sh 'echo \\"asdf\\"'
}
Result
[Pipeline] {
[Pipeline] sh
+ echo asdf
asdf
[Pipeline] sh
+ echo asdf
asdf
[Pipeline] sh
+ echo "asdf"
"asdf"
[Pipeline] }
[Pipeline] // node
[Pipeline] End of Pipeline
After long time of struggling and googling, this is what has worked for me on similar use case:
sh("ssh root#my.server.com \"su user -c \\\"mkdir ${newDirName}\\\"\"")
Update: How I think it gets interpreted
1] sh extension strips first escaping (\" becomes " and \\ becomes \, first and last " are not part of input)
ssh root#my.server.com "su user -c \"mkdir ${newDirName}\""
2] ssh command strips second level of escaping (\" becomes ", while outer " also not part of input)
su user -c "mkdir ${newDirName}"
I had double quotes inside the variable, so escaped single quotes worked for me:
sh "git commit -m \'${ThatMayContainDoubleQuotes}\'"
I needed the output to be with trailing \\ so I had to do something like this
echo 'key1 = \\\\"__value1__\\\\"' > auto.file
File looks like
cat auto.file
key1 = \\"__value1__\\"
Dependent Script
export value1="some-value"
var=${value1}
# Read in template one line at the time, and replace variables
tmpfile=$(mktemp)
sed -E 's/__(([^_]|_[^_])*)__/${\\1}/g' auto.file > ${tmpfile}
while read auto
do
eval echo "$auto"
done < "${tmpfile}" > autoRendered.file
rm -f ${tmpfile}
Rendered File looks like
cat autoRendered.file
key1 = "some-value"
For anyone who comes looking for a fix to a similar issue with quoting numbers during helm install/upgrade, you can use --set-string instead of --set
Ref: https://helm.sh/docs/chart_best_practices/values/#consider-how-users-will-use-your-values
I can not run /etc/init.d/dbora.
When running through the terminal it reports the following problem:
Shell
[root#localhost init.d]# ./dbora start Starting... Processing Database
instance "ORA11G": log file
/ora01/app/oracle/product/11.2.0/db_1/startup.log Environment variable
ORACLE_UNQNAME not defined. Please set ORACLE_UNQNAME to database
unique name.
My User Linux: oracle
Script
!/bin/bash
# versao: 1.0
export TMP=/tmp
export ORACLE_HOSTNAME=centos7.dbaora.com
export ORACLE_UNQNAME=oracle
export ORACLE_BASE=/ora01/app/oracle
export ORACLE_HOME=$ORACLE_BASE/product/11.2.0/db_1
export ORACLE_SID=ORA11G
export ORACLE_OWNER=oracle
PATH=/usr/sbin:$PATH:$ORACLE_HOME/bin
export LD_LIBRARY_PATH=$ORACLE_HOME/lib:/lib:/usr/lib;
export CLASSPATH=$ORACLE_HOME/jlib:$ORACLE_HOME/rdbms/jlib;
alias cdob='cd $ORACLE_BASE'
alias cdoh='cd $ORACLE_HOME'
alias tns='cd $ORACLE_HOME/network/admin'
alias envo='env | grep ORACLE'
umask 022
start(){
echo "Starting..."
su - $ORACLE_OWNER -c "$ORACLE_HOME/bin/dbstart $ORACLE_HOME"
su - $ORACLE_OWNER -c "$ORACLE_HOME/bin/emctl start dbconsole"
touch /var/lock/subsys/dbora
}
stop(){
echo "Stopping..."
su - $ORACLE_OWNER -c "$ORACLE_HOME/bin/emctl stop dbconsole"
su - $ORACLE_OWNER -c "$ORACLE_HOME/bin/dbshut $ORACLE_HOME"
rm -f /var/lock/subsys/dbora
}
restart(){
stop
start
}
usage(){
echo "usage: $0 {start|stop|restart}"
}
if [ `id -u` -ne 0 ]
then
echo "Este script deve ser executado como root"
exit
fi
case $1 in
'start') start;;
'stop') stop;;
'restart') restart;;
*) usage;;
esac
ORACLE_UNQNAME is an OS environmental variable used by Oracle Enterprise Manager; it supports managing multiple databases from one OEM instance.
It looks like you haven't set a value yourself, probably because you only have the one database so it's already unique, right :) Nevertheless you need to give it a different value from oracle: orcl is traditional and will do the trick. In Linux you can set it from the command line using export like any other environment variable, or just change the value in your script.
[In my .bashrc]
Basically I try to make an alias:
alias e='su -c'
But when I write in a terminal:
~$ e ls -goFha /root
I (obviously) get the error:
su: group oFha does not exist
If $str were replaced by the rest of the command, the herebelow code would work:
alias e='su -c "$str"'
But alias don't work this way. Therefore, I thought to a function.
Replacing $str by the whole argument string, it could be something like:
e () {
"su -c '$str'"
}
How to get the whole argument string in a function?
How would you write my function?
Thanks
Here is another solution:
e() {
su -c "$*"
}
You can try this:
e () {
CMD="$#"
su -c "$CMD"
}
I have a Bash script that builds a string to run as a command
Script:
#! /bin/bash
matchdir="/home/joao/robocup/runner_workdir/matches/testmatch/"
teamAComm="`pwd`/a.sh"
teamBComm="`pwd`/b.sh"
include="`pwd`/server_official.conf"
serverbin='/usr/local/bin/rcssserver'
cd $matchdir
illcommando="$serverbin include='$include' server::team_l_start = '${teamAComm}' server::team_r_start = '${teamBComm}' CSVSaver::save='true' CSVSaver::filename = 'out.csv'"
echo "running: $illcommando"
# $illcommando > server-output.log 2> server-error.log
$illcommando
which does not seem to supply the arguments correctly to the $serverbin.
Script output:
running: /usr/local/bin/rcssserver include='/home/joao/robocup/runner_workdir/server_official.conf' server::team_l_start = '/home/joao/robocup/runner_workdir/a.sh' server::team_r_start = '/home/joao/robocup/runner_workdir/b.sh' CSVSaver::save='true' CSVSaver::filename = 'out.csv'
rcssserver-14.0.1
Copyright (C) 1995, 1996, 1997, 1998, 1999 Electrotechnical Laboratory.
2000 - 2009 RoboCup Soccer Simulator Maintenance Group.
Usage: /usr/local/bin/rcssserver [[-[-]]namespace::option=value]
[[-[-]][namespace::]help]
[[-[-]]include=file]
Options:
help
display generic help
include=file
parse the specified configuration file. Configuration files
have the same format as the command line options. The
configuration file specified will be parsed before all
subsequent options.
server::help
display detailed help for the "server" module
player::help
display detailed help for the "player" module
CSVSaver::help
display detailed help for the "CSVSaver" module
CSVSaver Options:
CSVSaver::save=<on|off|true|false|1|0|>
If save is on/true, then the saver will attempt to save the
results to the database. Otherwise it will do nothing.
current value: false
CSVSaver::filename='<STRING>'
The file to save the results to. If this file does not
exist it will be created. If the file does exist, the results
will be appended to the end.
current value: 'out.csv'
if I just paste the command /usr/local/bin/rcssserver include='/home/joao/robocup/runner_workdir/server_official.conf' server::team_l_start = '/home/joao/robocup/runner_workdir/a.sh' server::team_r_start = '/home/joao/robocup/runner_workdir/b.sh' CSVSaver::save='true' CSVSaver::filename = 'out.csv' (in the output after "runnning: ") it works fine.
You can use eval to execute a string:
eval $illcommando
your_command_string="..."
output=$(eval "$your_command_string")
echo "$output"
I usually place commands in parentheses $(commandStr), if that doesn't help I find bash debug mode great, run the script as bash -x script
don't put your commands in variables, just run it
matchdir="/home/joao/robocup/runner_workdir/matches/testmatch/"
PWD=$(pwd)
teamAComm="$PWD/a.sh"
teamBComm="$PWD/b.sh"
include="$PWD/server_official.conf"
serverbin='/usr/local/bin/rcssserver'
cd $matchdir
$serverbin include=$include server::team_l_start = ${teamAComm} server::team_r_start=${teamBComm} CSVSaver::save='true' CSVSaver::filename = 'out.csv'
./me casts raise_dead()
I was looking for something like this, but I also needed to reuse the same string minus two parameters so I ended up with something like:
my_exe ()
{
mysql -sN -e "select $1 from heat.stack where heat.stack.name=\"$2\";"
}
This is something I use to monitor openstack heat stack creation. In this case I expect two conditions, an action 'CREATE' and a status 'COMPLETE' on a stack named "Somestack"
To get those variables I can do something like:
ACTION=$(my_exe action Somestack)
STATUS=$(my_exe status Somestack)
if [[ "$ACTION" == "CREATE" ]] && [[ "$STATUS" == "COMPLETE" ]]
...
Here is my gradle build script that executes strings stored in heredocs:
current_directory=$( realpath "." )
GENERATED=${current_directory}/"GENERATED"
build_gradle=$( realpath build.gradle )
## touch because .gitignore ignores this folder:
touch $GENERATED
COPY_BUILD_FILE=$( cat <<COPY_BUILD_FILE_HEREDOC
cp
$build_gradle
$GENERATED/build.gradle
COPY_BUILD_FILE_HEREDOC
)
$COPY_BUILD_FILE
GRADLE_COMMAND=$( cat <<GRADLE_COMMAND_HEREDOC
gradle run
--build-file
$GENERATED/build.gradle
--gradle-user-home
$GENERATED
--no-daemon
GRADLE_COMMAND_HEREDOC
)
$GRADLE_COMMAND
The lone ")" are kind of ugly. But I have no clue how to fix that asthetic aspect.
To see all commands that are being executed by the script, add the -x flag to your shabang line, and execute the command normally:
#! /bin/bash -x
matchdir="/home/joao/robocup/runner_workdir/matches/testmatch/"
teamAComm="`pwd`/a.sh"
teamBComm="`pwd`/b.sh"
include="`pwd`/server_official.conf"
serverbin='/usr/local/bin/rcssserver'
cd $matchdir
$serverbin include="$include" server::team_l_start="${teamAComm}" server::team_r_start="${teamBComm}" CSVSaver::save='true' CSVSaver::filename='out.csv'
Then if you sometimes want to ignore the debug output, redirect stderr somewhere.
For me echo XYZ_20200824.zip | grep -Eo '[[:digit:]]{4}[[:digit:]]{2}[[:digit:]]{2}'
was working fine but unable to store output of command into variable.
I had same issue I tried eval but didn't got output.
Here is answer for my problem:
cmd=$(echo XYZ_20200824.zip | grep -Eo '[[:digit:]]{4}[[:digit:]]{2}[[:digit:]]{2}')
echo $cmd
My output is now 20200824