Questions tagged [quoting]
Strings are typically delimited by quotes, which raises the problem of dealing with strings that include quotes.
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escaping filename results from grep
How do I escape the output of grep so that bash can read the file names correctly?
I have a text file that is the output of a find command. For each line, I want to make a symlink. For now, I'm just ...
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passing parameters to driver
I'm doing a Linux driver tutorial, and I have encountered a problem
with the sample lesson of passing parameters to the driver.
I tried another parameter-passing example I found on the internet
with ...
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answers
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Is there a command to write text to a file without redirection, pipe or function?
Pipes and redirection are two of the most powerful functions in Linux, and I love them.
However, I'm stuck with a situation where I need to write a fixed piece of text to a file without using a pipe, ...
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How to escape both single quotes and exclamation marks in bash
I have a long command and I just want to use alias to shorten it. But the command contains single quotes and exclamation marks.
The origin command is ldapsearch -x -H ... -w 'abc!123'.
I tried alias ...
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Is there a way to printf $@ verbatim?
I want to write a script that echoes to stdout its $@ verbatim, including any potential double-quotes, without a newline.
What I have tried:
> cat ./script1
#! /usr/bin/bash
printf "%s %s" $0 ...
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tcsh: Handle spaces in arguments when passing on to another command
I wrote a script that needs to call a command and pass on arguments. My script has its own parameters but some need to be passed through. This fails when arguments to my script have spaces in them.
...
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How to pass argument with char ( in remote path?
I'm trying to move a file with rsync to a remote location,
The file has be be named : DRRS_(H264).mp4
but when I try :
rsync -azR output.mp4 [email protected]:encoded/somepath/DRRS_(H264).mp4
it ...
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Why are my strings being truncated including and after an equals sign?
I was writing a shell script for inserting a string value through a Microsoft sqlcmd variable into a Microsoft SQL server database table and noticed some unexpected behavior. It appeared the trailing ...
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How to use grep string that has double quotes in it
So I'm running a simple alias called vpn which runs a command and has an output, which I put into a .txt file.
If interested to what exactly then here is the alias
alias vpn="docker exec -it ...
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2
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1
answer
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rsync does not exclude specified directory starting with a hash character (#)
I am trying to exclude the #recycle directory with rsync:
$ rsync -Hauv -h -P --exclude '#recycle/' --exclude @eaDir/ --exclude '.DS_Store*' --exclude desktop.ini user1@src_server:/volume2/...
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value of $VAR already contains backtick and/or single quote inside. How to handle it? How to properly pass $VAR to program? [duplicate]
$ bash --version
GNU bash, versione 5.2.26(1)-release (x86_64-pc-linux-gnu)
I don't know how to deal with $VAR when its value inside contains single quote (') and/or backtick (`).
I'm in the need of ...
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2
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Exclude the output from ssh and only log the error if found
typeset -f | sshpass -e ssh -o StrictHostKeyChecking=no user@${IPADDRESS} "
$(cat);
IFERROR=$(checkscript);
echo "$IFERROR"" > ${SSHTEMPFILE} 2>&1
This line...I can't exclude the "...
CommunityBot
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I can't grep some inputrc string
bind -p |grep -E "\\e.\":" work
but
bind -p |grep -E "\\e\\C-.\":" don't work
I tried a lot of combination
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ls output display a file named "N'*" as "N'\''*"
System:
Ubuntu 22.04.3 LTS
GNU bash, version 5.1.16(1)-release (x86_64-pc-linux-gnu)
ls (GNU coreutils) 8.32
Situation:
$ touch "N'*"
$ ls
'N'\''*'
"GNU Coreutils - Quoting File ...
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What is the difference between echo `date`, echo "`date`", and echo '`date`'?
What is the difference between these three commands?
echo `date`
echo "`date`"
echo '`date`'
I am confused on what the differences actually are. I think that when the ' are around it means that it ...
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1
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bash cd issue with path containing spaces: "too many arguments" [closed]
I created a path with spaces, and when I try to change directory I get "too many arguments" error message despite escaping the spaces or quoting the path :
Here are the tests I made :
# ...
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Replace string ${FOO} by ${'$'}{BAR} with sed
I have this string occurring N times in a file: ${FOO}
that I have to replace by this string: ${'$'}{BAR}
This is my current state:
sed "s/\\${FOO}/\\${'\\$'}{BAR}/" file.txt but it raises &...
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Tab character in exiftool
I need to insert tab character on place of _ between day and hour.
exiftool -T -r -filename -CreateDate -d "%Y%"."%m%"."%d_%H%"."%M%"."%S" /Users/***/***/testmapa/mapa2/ > /Users/***/***/testmapa/...
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Meaning of \ before environment variable
In ksh on an old Solaris box I used:
export PS1="$PWD $"
to set the prompt to the current directory. It works great until you cd elsewhere, then you see that it's not evaluating PWD each time. I ...
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How to use a variable in a command inside of a bash file
I use this command directly on our redhat linux server 8.8 and it's working correctly and I get the result I want:
grep '01-FEB-2024' /u01/app/server1/listener_scan/trace/listener_scan.log | awk '{ if ...
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Why is echo ignoring my quote characters?
The echo command isn't including the complete text that I give it. For example, if I do:
$ echo ' echo PARAM=` grep $ARG /var/tmp/setfile | awk '{print $2}' ` '
It outputs:
echo PARAM=` ...
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6
answers
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Should variables be quoted when executed?
The general rule in shell scripting is that variables should always be quoted unless there is a compelling reason not to. For more details than you probably want to know, have a look at this great Q&...
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Security implications of forgetting to quote a variable in bash/POSIX shells
If you've been following unix.stackexchange.com for a while, you
should hopefully know by now that leaving a variable
unquoted in list context (as in echo $var) in Bourne/POSIX
shells (zsh being the ...
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Why isn't passed quoted $@ a single argument? [duplicate]
Why isn't passed quoted $@ a single argument?
f2()
{
echo "f2: $1"
}
f1()
{
local x=("$@")
f2 "${x[@]}"
}
f1 x y
Invocation:
$ bash t537.sh
f2: ...
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escape in double and single quotation [duplicate]
I am confusing why bash can escape "..." but can't escape '...'? Can some one give me a hint? Thanks
test@test:~$ echo "He said, \"Hello world\""
He said, "Hello ...
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How can I create a file named "\?$*'ChouMi'*$?\"?
I need to create a file with this exact name "\?$*'ChouMi'*$?\" so that ls would show it as:
$ ls | cat -e
"\?$*'ChouMi'*$?\"$
$
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What characters need to be escaped in files without quotes?
I have browser-based shell/terminal that executes bash commands and I'm escaping spaces but it turns out that parenthesis also need to be escaped. What other characters need to be escaped for file ...
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1
answer
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How to ensure that string interpolated into `sed` substitution escapes all metachars
I have a script that reads a text stream and generates a file of sed commands that is later run with sed -f. The generated sed commands are like:
s/cid:image002\.gif@01CC3D46\.926E77E0/https:\/\/...
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Why does -n with unquoted variable containing empty string return true? [duplicate]
From man bash:
-n string
True if the length of string is non‐zero.
Examples:
# expected
$ var=""; [ -n "$var" ]; echo $?
1
# unexpected?
$ var=""; [ -n $var ]; echo ...
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How to proberly deal with quotes in filenames when using variables/arrays including the filenames in bash? [duplicate]
I have been working on a bash script for a few days and got stuck with filenames including single and double quotes.
Give I want to iterate over the following files in a directory:
'file1.txt'
'file2....
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