Follow me
-
Recent Posts
calendar
Recent Comments
- Stan on python argparse issues with the help argument (TypeError: %o format: a number is required, not dict)
- Cormac on Pandas : how to compare dataframe with None
- LP on AWK: the substr command to select a substring
- jrab on python argparse issues with the help argument (TypeError: %o format: a number is required, not dict)
- How to disable SSL verification for urlretrieve? – Peter's blog on python: certificate verified failed
Archives
Categories
Meta
Daily Archives: November 2, 2012
yum update failure: Cannot retrieve repository metadata
Sometimes, using “yum update”, the process fails with an error message similar to:: Error: Cannot retrieve repository metadata (repomd.xml) for repository: rpmfusion-free-updates. Please verify its path and try again Error: Cannot retrieve repository metadata (repomd.xml) for repository: rpmfusion-free-updates. Please verify … Continue reading
SED: insert text at the top of a bunch of files
at a line at the top of a file Imagine, you have a set of files ending in .txt, and you want to add the statement #header at the top of each of them. Then, simply type: ls *.txt | … Continue reading