Linux Ask! is a Q & A web site specific for Linux related questions. Questions are collected, answered and audited by experienced Linux users.
How to mass rename file in Bash
Answer:
For example, you might want to rename *.htm to *.html, create the following scripts
vi rename.sh
And enter
#!/bin/bash
for f in *.htm; do
mv $f ${f%htm}html
done
Execute the script and it does all the rename magics.
Delete svn folders and files
Answer:
After checkout from the svn repository using the svn checkout command , if you want to remove the svn related files/folders, use the following command under the working directory
find ./ -name ".svn" | xargs rm -rf
On the other hand, you should use svn export, instead of svn checkout if you don't want the svn related files/folders at the beginning.
Increase PHP memory limit
Answer:
If you experienced error such as "Fatal error: Allowed memory size of 16777216 bytes exhausted ", you would need to increase the memory limit of your PHP, by editing the php.ini
vi /etc/php.ini
Locate and set
memory_limit = 32M ;
Try it with the number you need.
Turn off PHP error messages?
Answer:
In a production server, you should always turn off PHP error messages to be displayed for public, to do so, edit the php.ini
E.g.
vi /etc/php.ini
And turn off display_errors
display_errors = Off
Convert IP address to HEX in Bash script
Answer:
The following Bash script is useful to convert IP address to HEX
#!/bin/sh
IP_ADDR=192.168.1.234
printf '%02X' ${IP_ADDR//./ }; echo
