If your files contain whitespaces in their names, it can sometimes be a real pain. Expressly if you are on Linux or Unix systems. I had some problems when running rsync for backup my files. Files with whitespace were causing problems. So bellow is simple command that will remove all whitespace and replace them with “_”. You can change to any symbol that you like. I example bellow, I was searching for all jpg files.
find . -type f -name "* *.jpg" -exec bash -c 'mv "$0" "${0// /_}"' {} \;
Sed is great command to use. I was writing some bash script and I needed to replace some strings in file with string saved in variable.
sed “s/string1/$string2/g; s/string3/$string4/g” $CFGFILE
When executed, script was returning this error:
[root@vincentvega]# ./myscript sed: -e expression #1, char 14: unknown option to `s'
After googling around for a while I figured out that / was causing the problem. So I replaced / with | and now works fine. I think that you can also use some other char than | if you want.
sed “s|string1|$string2|g; s|string3|$string4|g” $CFGFILE
Sometimes your exim mail queue can grow quite large. Especially when some website (WordPress!) is hacked and is sending tons of spam mail. Or when you end up with thousands of frozen mails. You probably don’t want to remove all emails from queue. That would mean legit emails too. You want to specify and delete only specific ones.
For sake of this demonstration we want to delete all emails that contains string domain.com
18h 60K 1b33Uz-000LkN-48 <info@domain.com> (someuser)
info@somedomain.com
Just run command below and all mails with string match doman.com will be deleted from mail queue.
exim -bp | grep "domain.com" | awk {'print $3'} | xargs exim -Mrm
Or for example, in case of frozen mails:
exim -bp | grep froz | awk {'print $3'} | xargs exim -Mrm
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