line continuation when using docker exec bash with double quotes
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I want to be able to pass variables inside the `docker exec bash -c " " which also include line continuation character. Consider below command which works with line continuation but without variables inside the bash command
docker exec -t $hostname bash -c 'authconfig --enableldap --enableldapauth
--ldapserver="myldap.docker.com" --ldapbasedn="dc=docker,dc=com" --enablesssd
--enablesssdauth --enableldaptls --enablemkhomedir --disablecache --disablecachecreds
--update'
If i want to pass variables inside the bash e.g. --ldapserver='$ldaphost' --ldapbasedn='dc=$domain,dc=com' and i need to replace single quotes ' by double quotes " and also remove the line continuation '',otherwise it doesn't work.
docker exec -t $hostname bash -c "authconfig --enableldap --enableldapauth --ldapserver='$ldaphost' --ldapbasedn='dc=$domain,dc=com' --enablesssd --enablesssdauth --enableldaptls --enablemkhomedir --disablecache --disablecachecreds --update"
Removing the line continuation takes away the aesthetics of the script. Are there any alternatives for this.
docker
asked yesterday
Dhirendra Khanka
1032
add a comment |
up vote
0
down vote
favorite
I want to be able to pass variables inside the `docker exec bash -c " " which also include line continuation character. Consider below command which works with line continuation but without variables inside the bash command
docker exec -t $hostname bash -c 'authconfig --enableldap --enableldapauth
--ldapserver="myldap.docker.com" --ldapbasedn="dc=docker,dc=com" --enablesssd
--enablesssdauth --enableldaptls --enablemkhomedir --disablecache --disablecachecreds
--update'
If i want to pass variables inside the bash e.g. --ldapserver='$ldaphost' --ldapbasedn='dc=$domain,dc=com' and i need to replace single quotes ' by double quotes " and also remove the line continuation '',otherwise it doesn't work.
docker exec -t $hostname bash -c "authconfig --enableldap --enableldapauth --ldapserver='$ldaphost' --ldapbasedn='dc=$domain,dc=com' --enablesssd --enablesssdauth --enableldaptls --enablemkhomedir --disablecache --disablecachecreds --update"
Removing the line continuation takes away the aesthetics of the script. Are there any alternatives for this.
docker
asked yesterday
Dhirendra Khanka
1032
1
Perhaps you just need to double the backslash, in order to escape it from expansion by the invoking shell?
– steeldriver
yesterday
actually i had already tried it..running the command did not give any error, but it also did nothing. the files these commands are supposed to modify were untouched
– Dhirendra Khanka
yesterday
Actually it seems to work, i was testing with same variable values and hoping for file to update..but the command does not update the timestamp if there is nothing to update. so i checked again with different values and it actually updates the files. Thanks for suggesting it again.
– Dhirendra Khanka
yesterday
add a comment |
up vote
0
down vote
favorite
up vote
0
down vote
favorite
I want to be able to pass variables inside the `docker exec bash -c " " which also include line continuation character. Consider below command which works with line continuation but without variables inside the bash command
docker exec -t $hostname bash -c 'authconfig --enableldap --enableldapauth
--ldapserver="myldap.docker.com" --ldapbasedn="dc=docker,dc=com" --enablesssd
--enablesssdauth --enableldaptls --enablemkhomedir --disablecache --disablecachecreds
--update'
If i want to pass variables inside the bash e.g. --ldapserver='$ldaphost' --ldapbasedn='dc=$domain,dc=com' and i need to replace single quotes ' by double quotes " and also remove the line continuation '',otherwise it doesn't work.
docker exec -t $hostname bash -c "authconfig --enableldap --enableldapauth --ldapserver='$ldaphost' --ldapbasedn='dc=$domain,dc=com' --enablesssd --enablesssdauth --enableldaptls --enablemkhomedir --disablecache --disablecachecreds --update"
Removing the line continuation takes away the aesthetics of the script. Are there any alternatives for this.
docker
asked yesterday
Dhirendra Khanka
1032
I want to be able to pass variables inside the `docker exec bash -c " " which also include line continuation character. Consider below command which works with line continuation but without variables inside the bash command
docker exec -t $hostname bash -c 'authconfig --enableldap --enableldapauth
--ldapserver="myldap.docker.com" --ldapbasedn="dc=docker,dc=com" --enablesssd
--enablesssdauth --enableldaptls --enablemkhomedir --disablecache --disablecachecreds
--update'
If i want to pass variables inside the bash e.g. --ldapserver='$ldaphost' --ldapbasedn='dc=$domain,dc=com' and i need to replace single quotes ' by double quotes " and also remove the line continuation '',otherwise it doesn't work.
docker exec -t $hostname bash -c "authconfig --enableldap --enableldapauth --ldapserver='$ldaphost' --ldapbasedn='dc=$domain,dc=com' --enablesssd --enablesssdauth --enableldaptls --enablemkhomedir --disablecache --disablecachecreds --update"
Removing the line continuation takes away the aesthetics of the script. Are there any alternatives for this.
docker
docker
asked yesterday
Dhirendra Khanka
1032
asked yesterday
Dhirendra Khanka
1032
asked yesterday
Dhirendra Khanka
1032
asked yesterday
Dhirendra Khanka
1032
asked yesterday
Dhirendra Khanka
1032
1032
1
Perhaps you just need to double the backslash, in order to escape it from expansion by the invoking shell?
– steeldriver
yesterday
actually i had already tried it..running the command did not give any error, but it also did nothing. the files these commands are supposed to modify were untouched
– Dhirendra Khanka
yesterday
Actually it seems to work, i was testing with same variable values and hoping for file to update..but the command does not update the timestamp if there is nothing to update. so i checked again with different values and it actually updates the files. Thanks for suggesting it again.
– Dhirendra Khanka
yesterday
add a comment |
1
Perhaps you just need to double the backslash, in order to escape it from expansion by the invoking shell?
– steeldriver
yesterday
actually i had already tried it..running the command did not give any error, but it also did nothing. the files these commands are supposed to modify were untouched
– Dhirendra Khanka
yesterday
Actually it seems to work, i was testing with same variable values and hoping for file to update..but the command does not update the timestamp if there is nothing to update. so i checked again with different values and it actually updates the files. Thanks for suggesting it again.
– Dhirendra Khanka
yesterday
1
1
Perhaps you just need to double the backslash, in order to escape it from expansion by the invoking shell?
– steeldriver
yesterday
Perhaps you just need to double the backslash, in order to escape it from expansion by the invoking shell?
– steeldriver
yesterday
actually i had already tried it..running the command did not give any error, but it also did nothing. the files these commands are supposed to modify were untouched
– Dhirendra Khanka
yesterday
actually i had already tried it..running the command did not give any error, but it also did nothing. the files these commands are supposed to modify were untouched
– Dhirendra Khanka
yesterday
Actually it seems to work, i was testing with same variable values and hoping for file to update..but the command does not update the timestamp if there is nothing to update. so i checked again with different values and it actually updates the files. Thanks for suggesting it again.
– Dhirendra Khanka
yesterday
Actually it seems to work, i was testing with same variable values and hoping for file to update..but the command does not update the timestamp if there is nothing to update. so i checked again with different values and it actually updates the files. Thanks for suggesting it again.
– Dhirendra Khanka
yesterday
add a comment |
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1
Perhaps you just need to double the backslash, in order to escape it from expansion by the invoking shell?
– steeldriver
yesterday
actually i had already tried it..running the command did not give any error, but it also did nothing. the files these commands are supposed to modify were untouched
– Dhirendra Khanka
yesterday
Actually it seems to work, i was testing with same variable values and hoping for file to update..but the command does not update the timestamp if there is nothing to update. so i checked again with different values and it actually updates the files. Thanks for suggesting it again.
– Dhirendra Khanka
yesterday