If you do not change (Web hosting control panel) IFS, filenames that
If you do not change IFS, filenames that contain spaces will be interpreted as multiple files instead of as a single file. What command can I use to rename all the *.aaa files to *.bbb files? In DOS and Windows, you can rename all the *.aaa files in a directory to *.bbb by using the rename command as follows: rename *.aaa *.bbb In UNIX you can use the mv command to rename files, but you cannot use it to rename more than one file at the same time. To do this, you need to use a for loop: OLDSUFFIX=aaa NEWSUFFIX=bbb for FILE in *.”$OLDSUFFIX” do NEWNAME= echo “$FILE” | sed -e “s/${OLDSUFFIX}$/$NEWSUFFIX/” mv “$FILE” “$NEWNAME” done Here you generate a list of all the files in the current directory that end with the value of the variable OLDSUFFIX. Then you use sed to modify the name of each file by removing the value of OLDSUFFIX from the filename and replacing it with the value of NEWSUFFIX. You use the $ character in your sed expression to anchor the suffix in OLDSUFFIX to the end of the line. You do this to make sure the pattern that is replaced is really a filename suffix. After you have a new name, you rename the file from its original name, stored in FILE, to the new name stored, stored in NEWNAME. To prevent a potential loss of data, you might need to modify this loop to specify the -i option to the mv command. For example, if the files 1.aaa and 1.bbb exist prior to executing this loop, after the loops exits, the original version of 1.aaa will be overwritten when 1.bbb is renamed as 1.aaa. If mv -i is used, you will be prompted before 1.bbb is renamed: mv: overwrite 1.aaa (yes/no)? You can answer no to avoid losing the information in this file. The actual prompt produced by mv might be different on your version of UNIX. What command can I use to rename all the aaa* files to bbb* files? The technique used in the last question can be used to solve this problem as well. In this case you will use the variables OLDPREFIX to hold the prefix a file currently has and NEWPREFIX to hold the prefix you want the file to have. As an example, you can use the following for loop to rename all files that start with aaa to start with bbb instead:
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