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Prepending information from filenames into files

 
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Top Forums UNIX for Dummies Questions & Answers Prepending information from filenames into files
# 8  
Old 06-02-2011
It seems that in Mac OS, when sed is used with -i, the backup extension is required, not optional, so we'll use an empty string for that in order to ingore backups. Change the sed line to:
Code:
sed -i '' "s/^/${i} ${j} /g"  height_${i}_width_${j}.txt

Please let us know how it works for you.
# 9  
Old 06-02-2011
Ah, now it worked! Thanks for your help and time, ciupinet! Smilie
# 10  
Old 06-02-2011
Quote:
Originally Posted by ciupinet
Code:
sed -i '' "s/^/${i} ${j} /g"  height_${i}_width_${j}.txt

A nit: In this case, the global flag is meaningless since the pattern is anchored.



A different approach, for kicks:
Code:
#!/bin/sh

for f in height_*_width_*.txt; do
    temp=${f#*_}; temp=${temp%.txt}
    h=${temp%%_*}; w=${temp##*_}
    printf '%s\n' "1,$ s/^/$h $w /" w q | ed -s "$f"
done

Regards,
Alister
# 11  
Old 06-03-2011
Ok, so since that all worked fine and good, I tried applying the same script idea to some actual research data of mine. It mostly worked, but instead of the values being prepended to the beginning of each line, the array symbols were prepended. Here is the whole script:

Quote:
#!/bin/bash

x=( 0.0025 0.025 0.5 0.125 0.25 0.5 0.75 1 1.25 1.5 2 2.5 )

indpop=( 1 2 4 6 8 10 12 14 16 18 20 )

length=( 250 500 750 1000 )

ntree=( 10 25 50 75 100 )

for d in "${x[@]}"; do
for p in "${indpop[@]}"; do
for l in "${length[@]}"; do
for t in "${ntree[@]}"; do
if [ -f nohead_mod_seqdiv_+_treedist_BP_${l}_GeneTrees_BranchLength_${d}_IndPop_${p}_ntree_${t}.txt ]; then
echo "Processing file nohead_mod_seqdiv_+_treedist_BP_${l}_GeneTrees_BranchLength_${d}_IndPop_${p}_ntree_${t}.txt"
sed -e 's/^/${l} ${d} ${p} /g' < nohead_mod_seqdiv_+_treedist_BP_${l}_GeneTrees_BranchLength_${d}_IndPop_${p}_ntree_${t}.txt > final_seqdiv_+_treedist_BP_${l}_GeneTrees_BranchLength_${d}_IndPop_${p}_ntree_${t}.txt
else
echo "File nohead_mod_seqdiv_+_treedist_BP_${l}_GeneTrees_BranchLength_${d}_IndPop_${p}_ntree_${t}.txt does not exist"
fi
done
done
done
done
And here is a line from one of the result files:

Quote:
${l} ${d} ${p} 0.05013333333 0 0.0467095461669496 0.044 4
For some reason, when executing the sed command it won't recognize the arrays, and I'm not sure why.
# 12  
Old 06-03-2011
I didn't really read your code, but the sed command is strongly quoted. You want to use the weaker double quotes for that.
# 13  
Old 06-03-2011
Ok, the double quotes worked. Thanks!
# 14  
Old 06-03-2011
I think perl is installed by default. Try this and let me know if it works.


Code:
perl -lane 'print "$1 $2 $F[0] $F[1]" if($ARGV=~/(\d+)\_\w+\_(\d+)/)' height_2_width_1.txt

 
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