10
votes
Accepted
How to create multiple files (with different names) in a specific directory all at once in a Linux terminal
Yes, you can create multiple files with different names in a single command using terminal. Here's an example command that does exactly what you want:
mkdir -p src/components && touch src/...
- 276
3
votes
bash: syntax error near unexpected token '|'
The syntax error you're receiving is because the regular expression needs to be surrounded by quotes, either single or double. Otherwise, the vertical bar character is treated as a Unix pipe, which ...
- 53
3
votes
bash: syntax error near unexpected token '|'
In almost all cases, it is necessary to mask your regex to prevent the shell from interpreting it and handing an already (partly) interpreted version to find.
find ./ -regextype posix-extended -regex &...
- 6,222
3
votes
Sound works as root but no sound as www-data
The user www-data is by default a member of only the www-data group for security reasons.
Only, members of the audio group can play audio.
You can test by adding the www-data user to the audio group ...
- 20.3k
3
votes
Passing multiple file patterns to grep
How about giving the patterns to grep through a sub-shell, e.g.:
grep -f <(printf "%s\n" "${ptrn[@]}") FILE...
- 3,438
2
votes
Passing multiple file patterns to grep
If your patterns/words stored as array elements are guaranteed to not have spaces or non-escaped shell special characters in them, then you can use bash's parameter expansion to pass the array ...
- 20.3k
2
votes
Accepted
Bash function processing on arrays
This seems like a typical XY problem question ... So, all I can do to help is to highlight some points you mentioned and hopefully this will at least help you avoid dead ends and point you away from ...
- 20.3k
2
votes
Accepted
Passing multiple file patterns to grep
Two options:
Standards-compliant way: Join the patterns with newline and provide it as single argument:
grep -e "$(printf "%s\n" "${ptrn[@]}")" ...
(This feature is ...
- 190k
1
vote
Accepted
reading multiline output of command into variable in bash script
You're not quoting the variable.
echo "$disk_info"
The variable contains all the newlines, but the shell expands the value to parameters to echo. Double quoting the variable prevents the ...
- 9,128
1
vote
Accepted
Running grep via GNU parallel
grep is one of the most refined and time proven tools performance-wise ... Please, see for example the speed comparison of grep with other text-processing tools on very large 1G+ files with 8M+ lines ...
- 20.3k
1
vote
How to create a rotation animation using shell script?
very minimal way of writing using printf
sh-5.1$ while true ; do for i in \\ "|" / "-"; do printf "$i" ; sleep 0.1 ; printf "\b" ; done ; done
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